Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010

查看全文 作　　者：WANG [1,2]Hao;LIU Guo-[1]hua;LI Zong-[1]shan;YE [1,2]Xin;WANG [1,2]Meng;GONG [1,2]Li

机构地区：[1]State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Science,Chinese Academyof Sciences,Beijing 100085,China;[2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Mountain Science》索引2016年第13卷第5期,共13页

基　　金：supported by the“Strategic Priority Research Program-Climate Change:Carbon Budget and Relevant Issues’’of the Chinese Academy of Sciences(Grant No.XDA05060104) 摘　　要：Changes in vegetation phenology are key indicators of the response of ecosystems to climate change.Therefore,knowledge of growing seasons is essential to predict ecosystem changes,especially for regions with a fragile ecosystem such as the Loess Plateau.In this study,based on the normalized difference vegetation index(NDVI) data,we estimated and analyzed the vegetation phenology in the Loess Plateau from 2000 to 2010 for the beginning,length,and end of the growing season,measuring changes in trends and their relationship to climatic factors.The results show that for 54.84% of the vegetation,the trend was an advancement of the beginning of the growing season(BGS),while for 67.64% the trend was a delay in the end of the growing season(EGS).The length of the growing season(LGS) was extended for 66.28% of the vegetation in the plateau.While the temperature is important for the vegetation to begin the growing season in this region,warmer climate may lead to drought and can become a limiting factor for vegetation growth.We found that increasedprecipitation benefits the advancement of the BGS in this area.Areas with a delayed EGS indicated that the appropriate temperature and rainfall in autumn or winter enhanced photosynthesis and extended the growth process.A positive correlation with precipitation was found for 76.53% of the areas with an extended LGS,indicating that precipitation is one of the key factors in changes in the vegetation phenology in this water-limited region.Precipitation plays an important role in determining the phenological activities of the vegetation in arid and semiarid areas,such as the Loess Plateau.The extended growing season will significantly influence both the vegetation productivity and the carbon fixation capacity in this region. 关键词：黄土高原地区植被物候驱动力半干旱地区生长季节归一化植被指数生态系统气候变化

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Driving force and changing trends of vegetation phenology in the Loess Plateau of China from 2000 to 2010

参考文献(64)

引证文献(11)

耦合文献(1063)

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