干旱区生态环境知识资源中心(Arid): Impacts of Climate Change on Net Primary Productivity in Arid and Semiarid Regions of China

Arid

	Impacts of Climate Change on Net Primary Productivity in Arid and Semiarid Regions of China
	Wang Hao; Liu Guohua; Li Zongshan; Ye Xin; Wang Meng; Gong Li
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2016
卷号	26 期号:1 页码:35-47
英文摘要	In recent years, with the constant change in the global climate, the effect of climate factors on net primary productivity (NPP) has become a hot research topic. However, two opposing views have been presented in this research area:global NPP increases with global warming, and global NPP decreases with global warming. The main reasons for these two opposite results are the tremendous differences among seasonal and annual climate variables, and the growth of plants in accordance with these climate variables. Therefore, it will fail to fully clarify the relation between vegetation growth and climate changes by research that relies solely on annual data. With seasonal climate variables, we may clarify the relation between vegetation growth and climate changes more accurately. Our research examined the arid and semiarid areas in China (ASAC), which account for one quarter of the total area of China. The ecological environment of these areas is fragile and easily affected by human activities. We analyzed the influence of climate changes, especially the changes in seasonal climate variables, on NPP, with Climatic Research Unit (CRU) climatic data and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite remote data, for the years 2000-2010. The results indicate that:for annual climatic data, the percentage of the ASAC in which NPP is positively correlated with temperature is 66.11%, and 91.47% of the ASAC demonstrates a positive correlation between NPP and precipitation. Precipitation is more positively correlated with NPP than temperature in the ASAC. For seasonal climatic data, the correlation between NPP and spring temperature shows significant regional differences. Positive correlation areas are concentrated in the eastern portion of the ASAC, while the western section of the ASAC generally shows a negative correlation. However, in summer, most areas in the ASAC show a negative correlation between NPP and temperature. In autumn, precipitation is less important in the west, as opposed to the east, in which it is critically important. Temperatures in winter are a limiting factor for NPP throughout the region. The findings of this research not only underline the importance of seasonal climate variables for vegetation growth, but also suggest that the effects of seasonal climate variables on NPP should be explored further in related research in the future.
英文关键词	climate change net primary productivity (NPP) annual/seasonal variability trend analysis arid/semiarid regions of China (ASAC)
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5612167
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335590
作者单位	Wang Hao, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Liu Guohua, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Li Zongshan, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Ye Xin, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Wang Meng, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Gong Li, Research Center for Eco-Environmental Science, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.
推荐引用方式 GB/T 7714	Wang Hao,Liu Guohua,Li Zongshan,et al. Impacts of Climate Change on Net Primary Productivity in Arid and Semiarid Regions of China[J],2016,26(1):35-47.
APA	Wang Hao,Liu Guohua,Li Zongshan,Ye Xin,Wang Meng,&Gong Li.(2016).Impacts of Climate Change on Net Primary Productivity in Arid and Semiarid Regions of China.Chinese Geographical Science,26(1),35-47.
MLA	Wang Hao,et al."Impacts of Climate Change on Net Primary Productivity in Arid and Semiarid Regions of China".Chinese Geographical Science 26.1(2016):35-47.