DOI: 10.1016/j.jag.2017.10.002
Scopus记录号: 2-s2.0-85036579139
论文题名: MODIS EVI-based net primary production in the Sahel 2000–2014
作者: Ardö J ; , Tagesson T ; , Jamali S ; , Khatir A
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2018
卷: 65 起始页码: 35
结束页码: 45
语种: 英语
英文关键词: Carbon use efficiency
; Eddy covariance flux data
; Resource assessment
Scopus关键词: assessment method
; carbon
; climate change
; eddy covariance
; estimation method
; MODIS
; net primary production
; vegetation index
; Sahel [Sub-Saharan Africa]
英文摘要: Africa is facing resource problems due to increasing demand combined with potential climate-induced changes in supply. Here we aim to quantify resources in terms of net primary production (NPP [g C m−2 yr−1]) of vegetation in the Sahel region for 2000–2014. Using time series of the enhanced vegetation index (EVI) from MODIS, NPP was estimated for the Sahel region with a 500 × 500 m spatial resolution and 8-day temporal resolution. The estimates were based on local eddy covariance flux measurements from six sites in the Sahel region and the carbon use efficiency originating from a dynamic vegetation model. No significant NPP change was found for the Sahel as a region but, for sub-regions, significant changes, both increasing and decreasing, were observed. Substantial uncertainties related to NPP estimates and the small availability of evaluation data makes verification difficult. The simplicity of the methodology used, dependent on earth observation only, is considered an advantage. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79916
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, Lund, Sweden; Department of Technology and Society, Lund University, Box 118, Lund, Sweden; ARC-Agricultural Research Corporation, El Obied Agricultural Research Station, El Obied, ZC, Sudan
Recommended Citation:
Ardö J,, Tagesson T,, Jamali S,et al. MODIS EVI-based net primary production in the Sahel 2000–2014[J]. International Journal of Applied Earth Observation and Geoinformation,2018-01-01,65