MaNiP– A large scale nutrition manipulation experiment in a tree grass ecosystem to understand ecosystem-physiological response to changing N/P stoichiometry and water availability

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Integrated Carbon Observation System (ICOS)

This document provides an overview of the MaNiP experiment, which is a large-scale nutrition manipulation experiment in a tree grass ecosystem in Spain. The goals are to understand the ecosystem and physiological response to different nitrogen and phosphorus stoichiometry and water availability. The study site and instrumentation are described, including flux towers to measure carbon dioxide, water vapor, and energy fluxes at half-hourly intervals. Spatial heterogeneity is analyzed using hyperspectral imagery and vegetation indices. Soil processes, nutrient availability, and fluxes are also measured.

Wissenschaft

MaNiP –
A large scale nutrition manipulation
experiment in a tree grass ecosystem
to understand ecosystem-physiological
response to changing N/P stoichiometry
and water availability
Tarek El-Madany1, Mirco Migliavacca1, Oscar Perez-Priego1, Olaf Kolle1,
Nuno Carvallhais1, Yun-Peng Luo1, Arnaud Carrara², Gerardo Moreno³, Javier
Pacheco-Labrador4, Maria-Pilar Martin-Isabel4, Markus Reichstein1
2nd ICOS Scientific Conference on greenhouse gases and biogeochemical cycles
28.09.2016, Helsinki
1 Max Planck Institute for Biogeochemistry Department Biogeochemical Integration, Germany
2 Centro de Estudios Ambientales del Mediterráneo (CEAM), Spain
3 Forest Research Group - INDEHESA University of Extremadura, Spain
4Consejo Superior De Investigaciones Cientificas, Spain

Experimental Goals
Ecosystem and
physiological
response to
different N/P
stoichiometry
Structural and
physiological
phenology
Soil processes and
properties
Nutrient availability
Fluxes
IAV
Hyperspec Sig
Vegetation Ind
Water and Nutrient
availability
Phenology
ET partitioning
Reflectance
Above-/Below-
Ground Biomass
Tree-Grass-
Competition
Nutrient availability
Soil Respiration
C-Allocation
C-Turnover

Study site – Majadas del Tietar
N-ADD
NP-ADD
CONTROL

‘Wet‘ study site – Majadas del Tietar
N-ADD
NP-ADD
CONTROL

Surface properties and fluxes
High resolution surface
property map
Classification of PFTs
Calculate 2-D footprint (Detto
et al., 2006, Hsieh et al.,
2000)
Intersect FP with
classification and VI maps
Weighing according to FP-pdf

Pre-fertilization Benchmarking (Spring)
Half-hourly NEE fluxes

Post-fertilization (Spring)
Half-hourly NEE fluxesHalf-hourly LE fluxes

http://1920x1080hdwallpapers.com/image/201505/macro/1516/grass-drop-water-dew-sunrise.jpg
Thank you for your attention
Thanks for your attention

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