Sökning: (WFRF:(Berger Klaus))
> (2020-2023) >
Modeling gas exchan...
Modeling gas exchange and biomass production in West African Sahelian and Sudanian ecological zones
-
- Rahimi, Jaber (författare)
- Karlsruhe Institute of Technology
-
- Ago, Expedit Evariste (författare)
- University of Liège,University of Abomey Calavi (UAC)
-
Ayantunde, Augustine (författare)
-
visa fler...
-
- Berger, Sina (författare)
- University of Augsburg,Karlsruhe Institute of Technology
-
- Bogaert, Jan (författare)
- University of Liège
-
- Butterbach-Bahl, Klaus (författare)
- International Livestock Research Institute Nairobi,Karlsruhe Institute of Technology
-
- Cappelaere, Bernard (författare)
- University of Montpellier
-
- Cohard, Jean Martial (författare)
- University Grenoble Alpes
-
- Demarty, Jérôme (författare)
- University of Montpellier
-
Diouf, Abdoul Aziz (författare)
-
- Falk, Ulrike (författare)
- German Meteorological Service (DWD)
-
- Haas, Edwin (författare)
- Karlsruhe Institute of Technology
-
- Hiernaux, Pierre (författare)
- Centre d'Ecologie Fonctionnelle et Evolutive (CEFE)
-
- Kraus, David (författare)
- Karlsruhe Institute of Technology
-
- Roupsard, Olivier (författare)
- University of Montpellier,Agricultural research for develompent (CIRAD)
-
- Scheer, Clemens (författare)
- Karlsruhe Institute of Technology
-
- Srivastava, Amit Kumar (författare)
- University of Bonn
-
- Tagesson, Torbern (författare)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,University of Copenhagen
-
- Grote, Rüdiger (författare)
- Karlsruhe Institute of Technology
-
visa färre...
-
(creator_code:org_t)
- 2021-06-24
- 2021
- Engelska 24 s.
-
Ingår i: Geoscientific Model Development. - : Copernicus GmbH. - 1991-959X .- 1991-9603. ; 14:6, s. 3789-3812
- Relaterad länk:
-
http://dx.doi.org/10... (free)
-
visa fler...
-
https://gmd.copernic...
-
https://lup.lub.lu.s...
-
https://doi.org/10.5...
-
visa färre...
Abstract
Ämnesord
Stäng
- West African Sahelian and Sudanian ecosystems provide essential services to people and also play a significant role within the global carbon cycle. However, climate and land use are dynamically changing, and uncertainty remains with respect to how these changes will affect the potential of these regions to provide food and fodder resources or how they will affect the biosphere-atmosphere exchange of CO2. In this study, we investigate the capacity of a process-based biogeochemical model, LandscapeDNDC, to simulate net ecosystem exchange (NEE) and aboveground biomass of typical managed and natural Sahelian and Sudanian savanna ecosystems. In order to improve the simulation of phenology, we introduced soil-water availability as a common driver of foliage development and productivity for all of these systems. The new approach was tested by using a sample of sites (calibration sites) that provided NEE from flux tower observations as well as leaf area index data from satellite images (MODIS, MODerate resolution Imaging Spectroradiometer). For assessing the simulation accuracy, we applied the calibrated model to 42 additional sites (validation sites) across West Africa for which measured aboveground biomass data were available. The model showed good performance regarding biomass of crops, grass, or trees, yielding correlation coefficients of 0.82, 0.94, and 0.77 and root-mean-square errors of 0.15, 0.22, and 0.12gkggm-2, respectively. The simulations indicate aboveground carbon stocks of up to 0.17, 0.33, and 0.54gkggCgha-1gm-2 for agricultural, savanna grasslands, and savanna mixed tree-grassland sites, respectively. Carbon stocks and exchange rates were particularly correlated with the abundance of trees, and grass biomass and crop yields were higher under more humid climatic conditions. Our study shows the capability of LandscapeDNDC to accurately simulate carbon balances in natural and agricultural ecosystems in semiarid West Africa under a wide range of conditions; thus, the model could be used to assess the impact of land-use and climate change on the regional biomass productivity.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Rahimi, Jaber
-
Ago, Expedit Eva ...
-
Ayantunde, Augus ...
-
Berger, Sina
-
Bogaert, Jan
-
Butterbach-Bahl, ...
-
visa fler...
-
Cappelaere, Bern ...
-
Cohard, Jean Mar ...
-
Demarty, Jérôme
-
Diouf, Abdoul Az ...
-
Falk, Ulrike
-
Haas, Edwin
-
Hiernaux, Pierre
-
Kraus, David
-
Roupsard, Olivie ...
-
Scheer, Clemens
-
Srivastava, Amit ...
-
Tagesson, Torber ...
-
Grote, Rüdiger
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Geovetenskap och ...
- Artiklar i publikationen
-
Geoscientific Mo ...
- Av lärosätet
-
Lunds universitet