%0 Dataset
%T NPP data of mod17a3hgf net primary productivity in Weihe River Basin (2000-2020)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/12eb4ca9-7568-410c-bdb9-f4ade0236491
%W NCDC
%R 10.12072/ncdc.WRiver.db0028.2021
%A Zhang yaonan
%K Mod17a3;net primary productivity;NPP
%X Net primary productivity (NPP) of vegetation is the net increase of biomass per unit area in unit time by fixing solar energy through photosynthesis. NPP, as an important component of carbon cycle in terrestrial ecosystem, plays an important role in controlling the rise of CO2 concentration in the atmosphere. It is not only the material and energy basis for the survival of heterotrophic organisms, but also the key link of biogeochemical cycle. It is one of the important indexes to evaluate the functional stability of ecological structure. Because photosynthesis directly affects the NPP of vegetation, and the normalized difference vegetation index (NDVI) can accurately reflect the greenness of vegetation and the intensity of photosynthesis, NDVI is often directly or indirectly used to calculate the NPP of vegetation in regional and global ecosystem models.