Abstract
The goal of this study is to investigate the spatiotemporal variation characteristics of LULC and to explore the impact of climate variability and LULC change on regional NPP in Jianghan Plain from 2000 to 2010 based on the CASA model, remote sensing data sets, meteorological data and LULC data. The results are summarized as follows: (1) the significant geographical variations are characterized mainly by the transformation from farmland to wetlands and constructive land. (2) The highest yield of NPP was 557.37 gC/m2 in 2007, and the lowest yield was 483.45 gC/m2 in 2009. (3) NPP spatial distribution has obvious uneven characteristics on the regional scale. (4) The correlation analysis shows that the correlation coefficient between annual total NPP and the annual precipitation and annual temperature was –0.4471 and 0.6296, respectively. Finally, the results may provide scientific information for investigating the influence of climate variability and LULC change on regional NPP in China.
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