文献类型：期刊文献

英文题名：A Decade's Change in Vegetation Productivity and Its Response to Climate Change over Northeast China

作者：Yan, Min[1] Xue, Mei[2] Zhang, Li[1] Tian, Xin[3] Chen, Bowei[1] Dong, Yuqi[1]

第一作者：Yan, Min

通信作者：Tian, X[1]

机构：[1]Chinese Acad Sci, Aerosp Informat Res Inst, Kay Lab Digital Earth Sci, Beijing 100094, Peoples R China;[2]CNIPA, Patent Off, Patent Examinat Cooperat Beijing Ctr, Beijing 100160, Peoples R China;[3]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China

年份：2021

卷号：10

期号：5

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-85104418231);WOS:【SCI-EXPANDED(收录号:WOS:000654502700001)】；

基金：This study was funded by the National Natural Science Foundation of China (grant number 41901364 and 41871279).

语种：英文

外文关键词：vegetation net primary productivity; BEPS; partial correlation analysis; lag analysis

摘要：In this study, we simulated vegetation net primary productivity (NPP) using the boreal ecosystem productivity simulator (BEPS) between 2003 and 2012 over Northeast China, a region that is significantly affected by climate change. The NPP was then validated against the measurements that were calculated from tree ring data, with a determination coefficient (R-2) = 0.84 and the root mean square error (RMSE) = 42.73 gC/m(2).a. Overall, the NPP showed an increasing trend over Northeast China, with the average rate being 4.48 gC/m(2).a. Subsequently, partial correlation and lag analysis were conducted between the NPP and climatic factors. The partial correlation analysis suggested that temperature was the predominant factor that accounted for changes in the forest NPP. Solar radiation was the main factor that affected the forest NPP, and the grass NPP was the most closely associated with precipitation. The relative humidity substantially affected the annual variability of the shrub and crop NPPs. The lag time of the NPP related to precipitation increased with the vegetation growth, and it was found that the lag period of the forest was longer than that of grass and crops, whereas the cumulative lag month of the forest was shorter. This comprehensive analysis of the response of the vegetation NPP to climate change can provide scientific references for the managing departments that oversee relevant resources.