IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Estimation of net primary productivity in north tibet plateau by integrating casa model with modis data
Lu, Yuan1,2; Wu, Lianglin1,3; Hua, Cui1
Source PublicationProceedings of SPIE - The International Society for Optical Engineering
Author of SourceSPIE
meetingGeoinformatics 2008 and Joint Conference on GIS and Built Environment: Monitoring and Assessment of Natural Resources and Environments
Conference DateJune 28, 2008 - June 29, 2008
Conference PlaceGuangzhou
Contribution Rank2
AbstractThis paper reports on the development and testing of a procedure for assessing large-scale patterns of vegetation Net Primary Productivity (NPP) in North Tibet Plateau. This work was based on Carnegie-Ames-Stanford Approach (CASA) model, multi-temporal MODIS data and ground meteorological data. The research shows that: (1) for NPP, an estimated result of North Tibet Plateauapproaches an actually tested value. A fast diagnosis and an accurate evaluation to temporal and spatial distribution of NPP can be fulfilled by CASA model; (2) spatial distribution of NPP appears a progressive decrease from SE to NW and this distribution is identical to hydrothermal conditions and vegetations zonal differentiation. A total NPP in study area is 46.434MtC/a, the largest occurring in high-cold meadow, making up 48.4 percent; the second in high-cold steppe, 39.24 percent, respectively; (3) NPP is featured byan obvious seasonal variation: extremely low in middle winter (from November to March), its cumulative value making up 3.2 percent of annual NPP; highest in summer (from June to September), its cumulative value covering 84 percent, respectively. This temporal variation of NPP is related to the seasonal variationof both temperature and moisture content in North Tibet Plateau. 
Subject AreaNet Primary Productivity ; Casa ; Modis ; North Tibet Plateau
Indexed ByEI
Accession numberAccession number:;20091311985769
Citation statistics
Document Type会议论文
Affiliation1.School of Resources and Environmental Science, Guangxi Teachers Education University, Nanning 530001, Guangxi, China;
2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China;
3.Research Center for Earth Environment and Resources, Sun Yat-sen University, Guangzhou 510275, Guangdong, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Lu, Yuan,Wu, Lianglin,Hua, Cui. Estimation of net primary productivity in north tibet plateau by integrating casa model with modis data[C]//SPIE,2008:71450J.
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