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River Health and Environmental Flows in
China – Study Tour Introduction




Robert Speed, Team Leader
罗伯特·斯皮德 项目主管
Study tour themes
• River health
   – Monitoring, assessment and reporting on river condition
   – Biological monitoring, in addition to traditional water quality and
     hydrology monitoring



    What to monitor?
    How to build a monitoring system?
    How to use the information in management?
    Reporting?
Study tour themes
• Environmental flows
   – Flows required to sustain important ecosystem assets and
     values
   – More than just minimum flows: the size, frequency, duration,
     timing, and variability of the flow regime



   What assets/services are important?
   How to decide which flows are important?
   How to provide them?
Australian Water Institutions
• State Government Water Agencies
   – Primary responsibility for water resources management:
   – water allocation plans;
   – licensing: abstraction and pollution discharge
   – monitoring

   Example: Queensland Department of Environment and Resource
     Management (DERM)
Australian Water Institutions
• National Government Water Agencies
   – Department of Environment, Sustainability, Water, Population
     and Communities: coordinate national water reform agenda;
     responsibilities for major water programs (water buyback;
     infrastructure upgrades)

   – Murray Darling Basin Authority: prepare whole-of-basin plan;
     define sustainable diversion limits

   – National Water Commission: monitor and audit implementation
     of the National Water Initiative; Framework for assessment of
     river and wetland health

   – Commonwealth Scientific and Industry Research Organisation
Project objective 项目目标
• Trial international approaches to river health
  assessment and environmental flows
  assessment 采用国际通用的评估方法评估河流
  健康与环境流量
• Consider application to national-level policies
  将改方法在全国范围内推广
Liao River
                          Basin
                          - River health


                    Yellow River
                    Basin
                    -E-flows
                    -River health


Pearl River Basin
- River health
assessment
Project timeline


  Agreement          Fieldwork               Presentation           Final workshop
  on scope and       and data                of pilot results       and final report
  objectives         collection

             Capacity             Data analysis                 Distil       Further
             building                                           lessons      work???
    Inception                                                   Project wrap
    phase项目启         Pilot study phase 项目工作阶段                   up项目收尾
    动阶段                                                         阶段


August           December                              December              July
 2009              2009                                  2010                2011
River health assessment methodology河流
健康评估方法
Underlying philosophy 基本原理
1. River health is important河流健康很重要
2. River health is much more than the quality of the water河
   流健康不仅仅包括水质达标
3. Biological indicators can be more sensitive to changes in
   river condition生物指标更易于反映河流健康状况
4. Biological monitoring programs can provide valuable
   support to management生物监测可以为流域管理者提供
   有价值的帮助
5. Monitoring should focus on assets of importance监测范
   围应该集中在重要的河流资产
River health assessment methodology
河流健康评估方法
Objective 目标
• Ability to compare sites against each over 不同评估地
  点之间存在可比性
• Understand likely cause of changes in river health 理解
  影响河流健康的因素
• Assess effectiveness of management responses评估管
  理效率
• Report on river health提供河流健康报告
River health assessment methodology
河流健康评估方法
Key issues 主要问题
• What to measure? 需要评估的内容
   – Many indicators available: which are relevant? 有许
     多不同的指标可供评估,应当选取哪种?
• What do the results mean? 评估结果的意义
   – What is a good score, what is a bad score? 何为优良
     的评估结果?何为不达标的评估结果?
• How to use the results? 如何应用评估结果
Important steps 项目发展的重要步骤
1   Identify the objectives the program 确定项目目标
    Identify the objectives of of the program 确定项目目标
2   Identify suitable measures (indicators) of drivers, stressors and response
    确认合适的驱使因素,压力源和反应的指标
3   Develop conceptual models linking range of drivers to potential impacts
    联系驱使因素和潜在影响开发概念模型
4   River Classification to identify homogenous „river types‟
    河流分类从而确认相同的河流类型
5   Trial sampling program and refinement of indicators 采样试验,完善指标
6   Selection of suitable benchmarks for ecological indicators
    选取合适的生态指标的基准
7   Reporting & Communication 报告和交流
8   Implement management actions to address priority areas/threats
    执行管理行动,明确地区/威胁的优先顺序
Building a river health monitoring program构
建河流健康评估项目



   Proof of        Pilot      Routine
  concept概      studies试     monitoring
   念论证           点研究         例行监测
Objectives of the pilot study 试点研究目标
• Demonstrate a method for developing a river
  monitoring program阐述开展一个河流健康监测项目的方
  法
• Undertake a preliminary assessment of the condition of
  the pilot site 开展试点河流健康初步评估

• Only a demonstration: limits on the results
Preliminary steps 评
估步骤
• Agree on approach to pilot
  确定评估方法
• Agree on objectives –
  sensitive indicators due to
  high conservation value 确
  定评估目标
• Identify sites确定评估试点
• Determine data to be
  collected确定采集数据类型
Fieldwork to collect samples




       Macroinvert
                     Channel
                     condition

        fish
                      Macrophytes


        diatom
Phylum                 Arthropoda
                                               Collation of data
                                                       Mollusca           Mollusca              Mollusca                   Mollusca               Mollusca        Mollusca        Mollusca
        Class                  Crustacea               Bivalvia           Gastropoda            Gastropoda                 Bivalvia               Gastropoda      Gastropoda      Gastropoda
                                            Decapoda          Mytiloida
编号      Order

                                            Atyidae           Mytilidae          Viviparidae                Lymnaeidae            Corbiculidae       Lymnaeidae      Valvatidae        Melaniidae
编号      Family
                                            Caridina         Limnoperna              Bellamya                 Radix                   corbicula        physa          Valvata         Semisulcospira
编号      Genera
                                                              lacustris          aeruginosa                Radixswinboei              fluminea
编号      Species

                                            米虾属              淡水壳菜                     铜锈                      椭圆                       河蚬             膀胱螺              盘螺               短沟卷
编号      Species name_Chinese



        平度村                                    0                  0                     0                       1                        0               0               0                   0
No.1
No.2    龙江                                     0                  0                     0                       0                        3               0               0                   0
        富罗                                    71                  1                     1                       27                       7               1               4                   38
No.3
        黄姚                                    110                 0                     4                       0                        12              0               0                   0
No.4
        下福水电站                                  0                  0                     0                       4                        1               0               6                   11
No.5
        siqinjiang2                            7                  23                    0                       0                        43              0               6                   57
No.6

        红花镇siqinjiang1                         0                  0                     0                       3                        5              32               0                   0
No.7
        昭平水电站                                  2                  216                   1                       1                        0               0               0                   2
No.8
        恭城水文站                                  0                  0                     5                       25                       0               0               0                   31
No.9
        龙岭                                    10                  0                     3                       6                        4               0              52                   28
No.10
        荔浦水文站                                 138                 0                     0                       0                        0              11               0                   0
No.11
        念村                                     0                  0                     0                       0                        0               0               0                   0
No.12
        阳朔水文站                                 27                  0                     0                       0                        0               0               0                   1
No.13
No.14   遇龙河                                   32                  0                     1                       0                        0               0               0                   17
        冠岩                                    10                  0                     1                       1                        11              1               4                   7
No.15
        潮田河                                    1                  0                     0                       3                        0               0               0                   0
No.16
        新寨                                     0                  0                     0                       0                        0               0               0                   0
No.17
        桂林水文站                                 47                  0                     3                       8                        1               3               0                   0
No.18
        兰田                                     0                  0                     0                       0                        0               0               0                   0
No.19
        东江                                     0                  0                     0                       0                        0               0               9                   0
No.20
        灵渠                                    37                  0                     9                       8                        6               2               7                   1
No.21
        大榕江                                   10                  0                     6                       9                        1               0               0                   0
No.22

        杉木河(猫儿山)                               0                  0                     0                       0                        0               0               0                   0
No.23
        六洞河                                    0                  1                     0                       0                        0               0               0                   8
No.24
        乌龟江                                    0                  0                     0                       0                        0               0               0                   0
No.25
Testing indicators against a disturbance
gradient 测试指标与干扰变化
Ecological health indicator
生态健康参数指标




                              Reference values 参数值



                                Low低                             High高
                                     Disturbance gradient 干扰变化
Classification 河流分类

 Different types of
   river will:
 不同的河流将
 • Require different
   indicators
   要求不同的指示物
 • Have different targets
   有不同的目标


   Presentation Heading
Weighting indicator scores

         Freq.
                                        All sites – all years,所有点,所有年
         (# obs.),监测频率




Reference sites         Single site, Standard
– all years,参考点,所有年
                                                to achieve values
                        – report year,单
                   50th 点,报告年
                        %’ile                                             95th %’ile
      80th %’ile


               1                                                                 0
                                  Concentration,浓度
      (reference),参考点                                                   (worst case),最差


    Convert all values to common scale to allow comparison转化所有结果
    使其成具有可比性

    Compare values against:结果比较
    - other sites in study; other studies 与其他点进行比较,与其他研究结
    果进行比较
    - national standards; international standards国家标准,国际标准
Reporting on river health
Reaches and Assets              River channel           4

                                  3

                                                          Delta
                          2                              wetlands
                                              Dongping
                                                Lake
             1



           Zhengzhou
Mengjin                Kaifeng
            wetlands
wetlands               wetlands
Start with objectives (from YRCC)
• 1 × Ultimate target
   – “Keeping the Yellow River Healthy”
• 4 × Criteria (“the 4-nos”)
   – No embankment breaching
   – No river running dry
   – No water pollution beyond standard
   – No riverbed rising further
Establish a framework (from YRCC)
                                           Indicator groups
“Healthy Indicators of the Yellow River”
• Flow continuity                             Hydrology
• Channel configuration for water and         Geomorphology
   sediment transportation
                                              Water quality
• Water quality standard
• River ecosystem                             Ecology

• Water supply capacity                       Social-economic
River Health Index




               Social/Economic                                   Environmental




 Indicators…             Ecology          Physical form      Hydrology     Water quality


                                       Wetland
                                      vegetation
               Fish                (remote sensing)

         Invertebrates
                                       Primary
          Vegetation                 productivity         Survey and
                                      Hydraulic            modelling
                                       habitat
Presentation Heading
Presentation Heading
Sediment flushing flow
                            (flow exceeded 5% of the time)

                                              Jun - Jul - Aug - Sep              Target 3,500 m3/s
                                   4,000
sediment regulation season daily
  Exceeded 5% of time - water-




                                   3,000
                                                                                First releases
       discharge (m 3/s)




                                                                        Huayuankou
                                   2,000
                                                                        Sunkou
                                                                        Huayuankou
                                   1,000
                                                                        Lijin

                                      0




                                                       Xiaolangdi Dam
No drying-up

                                               Cumulative annual days of cease to f low
                                       Lijin
                                               Annual peak cease to f low spell duration
                        350
Days of cease to flow




                        300
                        250
                        200
                        150
                        100
                        50
                          0




                                                         Xiaolangdi Dam
Trend in water quality (Grade III target)
         Annual - Proportion of                      High flow - Proportion of                   Low flow - Proportion of
         months target achieved                      months target achieved                      months target achieved
       0.0    0.2   0.4   0.6   0.8   1.0          0.0   0.2    0.4   0.6   0.8   1.0          0.0   0.2   0.4   0.6   0.8   1.0

1994                                        1994                                        1994
1995                                        1995                                        1995
1996                                        1996                                        1996
1997                                        1997                                        1997
1998                                        1998                                        1998
1999                                        1999                                        1999
2000                                        2000                                        2000
2001                                        2001                                        2001
2002                                        2002                                        2002
2003                                        2003                                        2003
2004                                        2004                                        2004
2005                                        2005                                        2005
2006                                        2006                                        2006
2007                                        2007                                        2007
2008                                        2008                                        2008
2009                                        2009                                        2009



                                                               Huayuankou
Channel capacity
                    9,000

                    8,000
                                                                                Target
                    7,000                                                             Huayuankou bankf ull
                                                                                      capacity (measured)
Discharge (m 3/s)




                    6,000
                                                                                      Lijin bankf ull capacity
                    5,000
                                                                                      (Ru et al., 2003)
                    4,000
                                                                                      Huayuankou f lood
                    3,000                                                             season average
                                                                                      discharge
                    2,000
                                                                                      5-year moving
                    1,000                                                             average

                        0
                        1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Additional indicators
      • Socio-economic
      • Biological




Presentation Heading
River Health Index




               Social/Economic                                   Environmental




 Indicators…             Ecology          Physical form      Hydrology     Water quality


                                       Wetland
                                      vegetation
               Fish                (remote sensing)

         Invertebrates
                                       Primary
          Vegetation                 productivity         Survey and
                                      Hydraulic            modelling
                                       habitat
Presentation Heading
Presentation Heading
Environmental flow requirements
      • Consolidation of existing studies, together with expert opinion
      • Identify flow requirements for the key assets (wetlands, delta),
        focussed on:
          – Fish
          – Vegetation
          – Birds
      • Hydrological model to assess capacity to achieve recommended
        flows




Presentation Heading
Step 3: Defining environmental flow requirements
 Determining important flow components

                          Bankfull flows and
                          overbank floods: channel
                          forming flows




                                                     High flow pulses:
                                                     trigger breeding
                                                     and migration
                      Low flows:
                      Maintain
                      habitat
Conclusions 总结 (1)
• Need to distinguish between:需要区分以下工作
   – Work to develop a monitoring program 如何设计开展监测工作
   – Routine monitoring 例行监测工作
• Small step on path to developing monitoring program 设计开展监
  测工作的一些步骤
   – Limited reference sites/samples 缩小参照点范围
   – quality of results will improve over time 评估项目的设计质量将
     逐步完善
Conclusions 总结(2)
• Many different policy decisions relating to:许多不同政策制定均与以
  下各因素相关:
   – What is an acceptable level of health 河流健康的可接受底线
   – How information should be presented 信息的表现方式
   – Suitability of different methods and indicators 各种不同方法及
     评估指标的适用性
• Suitability will depend on: 这些适用性主要由以下各因素决定:
   – Objectives 目标
   – Resources 资源
   – Capacity 能力
Conclusions 总结


• Importance of making informed decisions, that ensure
  we get the best possible outcomes from our rivers
   – Awareness of what is important in the river
   – Understanding the flow requirements of the
     ecosystem
   – Understanding the health of our river system
   – Conscious decisions about what is acceptable and
     what is not; and what we will do about it

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Leaders study tour briefing r speed

  • 1. River Health and Environmental Flows in China – Study Tour Introduction Robert Speed, Team Leader 罗伯特·斯皮德 项目主管
  • 2. Study tour themes • River health – Monitoring, assessment and reporting on river condition – Biological monitoring, in addition to traditional water quality and hydrology monitoring What to monitor? How to build a monitoring system? How to use the information in management? Reporting?
  • 3. Study tour themes • Environmental flows – Flows required to sustain important ecosystem assets and values – More than just minimum flows: the size, frequency, duration, timing, and variability of the flow regime What assets/services are important? How to decide which flows are important? How to provide them?
  • 4. Australian Water Institutions • State Government Water Agencies – Primary responsibility for water resources management: – water allocation plans; – licensing: abstraction and pollution discharge – monitoring Example: Queensland Department of Environment and Resource Management (DERM)
  • 5. Australian Water Institutions • National Government Water Agencies – Department of Environment, Sustainability, Water, Population and Communities: coordinate national water reform agenda; responsibilities for major water programs (water buyback; infrastructure upgrades) – Murray Darling Basin Authority: prepare whole-of-basin plan; define sustainable diversion limits – National Water Commission: monitor and audit implementation of the National Water Initiative; Framework for assessment of river and wetland health – Commonwealth Scientific and Industry Research Organisation
  • 6.
  • 7. Project objective 项目目标 • Trial international approaches to river health assessment and environmental flows assessment 采用国际通用的评估方法评估河流 健康与环境流量 • Consider application to national-level policies 将改方法在全国范围内推广
  • 8. Liao River Basin - River health Yellow River Basin -E-flows -River health Pearl River Basin - River health assessment
  • 9. Project timeline Agreement Fieldwork Presentation Final workshop on scope and and data of pilot results and final report objectives collection Capacity Data analysis Distil Further building lessons work??? Inception Project wrap phase项目启 Pilot study phase 项目工作阶段 up项目收尾 动阶段 阶段 August December December July 2009 2009 2010 2011
  • 10. River health assessment methodology河流 健康评估方法 Underlying philosophy 基本原理 1. River health is important河流健康很重要 2. River health is much more than the quality of the water河 流健康不仅仅包括水质达标 3. Biological indicators can be more sensitive to changes in river condition生物指标更易于反映河流健康状况 4. Biological monitoring programs can provide valuable support to management生物监测可以为流域管理者提供 有价值的帮助 5. Monitoring should focus on assets of importance监测范 围应该集中在重要的河流资产
  • 11. River health assessment methodology 河流健康评估方法 Objective 目标 • Ability to compare sites against each over 不同评估地 点之间存在可比性 • Understand likely cause of changes in river health 理解 影响河流健康的因素 • Assess effectiveness of management responses评估管 理效率 • Report on river health提供河流健康报告
  • 12. River health assessment methodology 河流健康评估方法 Key issues 主要问题 • What to measure? 需要评估的内容 – Many indicators available: which are relevant? 有许 多不同的指标可供评估,应当选取哪种? • What do the results mean? 评估结果的意义 – What is a good score, what is a bad score? 何为优良 的评估结果?何为不达标的评估结果? • How to use the results? 如何应用评估结果
  • 13. Important steps 项目发展的重要步骤 1 Identify the objectives the program 确定项目目标 Identify the objectives of of the program 确定项目目标 2 Identify suitable measures (indicators) of drivers, stressors and response 确认合适的驱使因素,压力源和反应的指标 3 Develop conceptual models linking range of drivers to potential impacts 联系驱使因素和潜在影响开发概念模型 4 River Classification to identify homogenous „river types‟ 河流分类从而确认相同的河流类型 5 Trial sampling program and refinement of indicators 采样试验,完善指标 6 Selection of suitable benchmarks for ecological indicators 选取合适的生态指标的基准 7 Reporting & Communication 报告和交流 8 Implement management actions to address priority areas/threats 执行管理行动,明确地区/威胁的优先顺序
  • 14. Building a river health monitoring program构 建河流健康评估项目 Proof of Pilot Routine concept概 studies试 monitoring 念论证 点研究 例行监测
  • 15. Objectives of the pilot study 试点研究目标 • Demonstrate a method for developing a river monitoring program阐述开展一个河流健康监测项目的方 法 • Undertake a preliminary assessment of the condition of the pilot site 开展试点河流健康初步评估 • Only a demonstration: limits on the results
  • 16. Preliminary steps 评 估步骤 • Agree on approach to pilot 确定评估方法 • Agree on objectives – sensitive indicators due to high conservation value 确 定评估目标 • Identify sites确定评估试点 • Determine data to be collected确定采集数据类型
  • 17. Fieldwork to collect samples Macroinvert Channel condition fish Macrophytes diatom
  • 18. Phylum Arthropoda Collation of data Mollusca Mollusca Mollusca Mollusca Mollusca Mollusca Mollusca Class Crustacea Bivalvia Gastropoda Gastropoda Bivalvia Gastropoda Gastropoda Gastropoda Decapoda Mytiloida 编号 Order Atyidae Mytilidae Viviparidae Lymnaeidae Corbiculidae Lymnaeidae Valvatidae Melaniidae 编号 Family Caridina Limnoperna Bellamya Radix corbicula physa Valvata Semisulcospira 编号 Genera lacustris aeruginosa Radixswinboei fluminea 编号 Species 米虾属 淡水壳菜 铜锈 椭圆 河蚬 膀胱螺 盘螺 短沟卷 编号 Species name_Chinese 平度村 0 0 0 1 0 0 0 0 No.1 No.2 龙江 0 0 0 0 3 0 0 0 富罗 71 1 1 27 7 1 4 38 No.3 黄姚 110 0 4 0 12 0 0 0 No.4 下福水电站 0 0 0 4 1 0 6 11 No.5 siqinjiang2 7 23 0 0 43 0 6 57 No.6 红花镇siqinjiang1 0 0 0 3 5 32 0 0 No.7 昭平水电站 2 216 1 1 0 0 0 2 No.8 恭城水文站 0 0 5 25 0 0 0 31 No.9 龙岭 10 0 3 6 4 0 52 28 No.10 荔浦水文站 138 0 0 0 0 11 0 0 No.11 念村 0 0 0 0 0 0 0 0 No.12 阳朔水文站 27 0 0 0 0 0 0 1 No.13 No.14 遇龙河 32 0 1 0 0 0 0 17 冠岩 10 0 1 1 11 1 4 7 No.15 潮田河 1 0 0 3 0 0 0 0 No.16 新寨 0 0 0 0 0 0 0 0 No.17 桂林水文站 47 0 3 8 1 3 0 0 No.18 兰田 0 0 0 0 0 0 0 0 No.19 东江 0 0 0 0 0 0 9 0 No.20 灵渠 37 0 9 8 6 2 7 1 No.21 大榕江 10 0 6 9 1 0 0 0 No.22 杉木河(猫儿山) 0 0 0 0 0 0 0 0 No.23 六洞河 0 1 0 0 0 0 0 8 No.24 乌龟江 0 0 0 0 0 0 0 0 No.25
  • 19. Testing indicators against a disturbance gradient 测试指标与干扰变化 Ecological health indicator 生态健康参数指标 Reference values 参数值 Low低 High高 Disturbance gradient 干扰变化
  • 20. Classification 河流分类 Different types of river will: 不同的河流将 • Require different indicators 要求不同的指示物 • Have different targets 有不同的目标 Presentation Heading
  • 21. Weighting indicator scores Freq. All sites – all years,所有点,所有年 (# obs.),监测频率 Reference sites Single site, Standard – all years,参考点,所有年 to achieve values – report year,单 50th 点,报告年 %’ile 95th %’ile 80th %’ile 1 0 Concentration,浓度 (reference),参考点 (worst case),最差 Convert all values to common scale to allow comparison转化所有结果 使其成具有可比性 Compare values against:结果比较 - other sites in study; other studies 与其他点进行比较,与其他研究结 果进行比较 - national standards; international standards国家标准,国际标准
  • 23. Reaches and Assets River channel 4 3 Delta 2 wetlands Dongping Lake 1 Zhengzhou Mengjin Kaifeng wetlands wetlands wetlands
  • 24. Start with objectives (from YRCC) • 1 × Ultimate target – “Keeping the Yellow River Healthy” • 4 × Criteria (“the 4-nos”) – No embankment breaching – No river running dry – No water pollution beyond standard – No riverbed rising further
  • 25. Establish a framework (from YRCC) Indicator groups “Healthy Indicators of the Yellow River” • Flow continuity Hydrology • Channel configuration for water and Geomorphology sediment transportation Water quality • Water quality standard • River ecosystem Ecology • Water supply capacity Social-economic
  • 26. River Health Index Social/Economic Environmental Indicators… Ecology Physical form Hydrology Water quality Wetland vegetation Fish (remote sensing) Invertebrates Primary Vegetation productivity Survey and Hydraulic modelling habitat Presentation Heading Presentation Heading
  • 27. Sediment flushing flow (flow exceeded 5% of the time) Jun - Jul - Aug - Sep Target 3,500 m3/s 4,000 sediment regulation season daily Exceeded 5% of time - water- 3,000 First releases discharge (m 3/s) Huayuankou 2,000 Sunkou Huayuankou 1,000 Lijin 0 Xiaolangdi Dam
  • 28. No drying-up Cumulative annual days of cease to f low Lijin Annual peak cease to f low spell duration 350 Days of cease to flow 300 250 200 150 100 50 0 Xiaolangdi Dam
  • 29. Trend in water quality (Grade III target) Annual - Proportion of High flow - Proportion of Low flow - Proportion of months target achieved months target achieved months target achieved 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 1994 1994 1994 1995 1995 1995 1996 1996 1996 1997 1997 1997 1998 1998 1998 1999 1999 1999 2000 2000 2000 2001 2001 2001 2002 2002 2002 2003 2003 2003 2004 2004 2004 2005 2005 2005 2006 2006 2006 2007 2007 2007 2008 2008 2008 2009 2009 2009 Huayuankou
  • 30. Channel capacity 9,000 8,000 Target 7,000 Huayuankou bankf ull capacity (measured) Discharge (m 3/s) 6,000 Lijin bankf ull capacity 5,000 (Ru et al., 2003) 4,000 Huayuankou f lood 3,000 season average discharge 2,000 5-year moving 1,000 average 0 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
  • 31. Additional indicators • Socio-economic • Biological Presentation Heading
  • 32. River Health Index Social/Economic Environmental Indicators… Ecology Physical form Hydrology Water quality Wetland vegetation Fish (remote sensing) Invertebrates Primary Vegetation productivity Survey and Hydraulic modelling habitat Presentation Heading Presentation Heading
  • 33. Environmental flow requirements • Consolidation of existing studies, together with expert opinion • Identify flow requirements for the key assets (wetlands, delta), focussed on: – Fish – Vegetation – Birds • Hydrological model to assess capacity to achieve recommended flows Presentation Heading
  • 34. Step 3: Defining environmental flow requirements Determining important flow components Bankfull flows and overbank floods: channel forming flows High flow pulses: trigger breeding and migration Low flows: Maintain habitat
  • 35. Conclusions 总结 (1) • Need to distinguish between:需要区分以下工作 – Work to develop a monitoring program 如何设计开展监测工作 – Routine monitoring 例行监测工作 • Small step on path to developing monitoring program 设计开展监 测工作的一些步骤 – Limited reference sites/samples 缩小参照点范围 – quality of results will improve over time 评估项目的设计质量将 逐步完善
  • 36. Conclusions 总结(2) • Many different policy decisions relating to:许多不同政策制定均与以 下各因素相关: – What is an acceptable level of health 河流健康的可接受底线 – How information should be presented 信息的表现方式 – Suitability of different methods and indicators 各种不同方法及 评估指标的适用性 • Suitability will depend on: 这些适用性主要由以下各因素决定: – Objectives 目标 – Resources 资源 – Capacity 能力
  • 37. Conclusions 总结 • Importance of making informed decisions, that ensure we get the best possible outcomes from our rivers – Awareness of what is important in the river – Understanding the flow requirements of the ecosystem – Understanding the health of our river system – Conscious decisions about what is acceptable and what is not; and what we will do about it