干旱区生态环境知识资源中心(Arid): Assessing phenological change in China from 1982 to 2006 using AVHRR imagery

Arid

	Assessing phenological change in China from 1982 to 2006 using AVHRR imagery
	Wei Haiyan; Heilman Philip; Qi Jiaguo; Nearing Mark; Gu Zhihui; Zhang Yongguang
来源期刊	Frontiers of Earth Science
ISSN	2095-0195
出版年	2012
卷号	6 期号:3 页码:227-236
英文摘要	Long-term trends in vegetation phenology indicate ecosystem change due to the combined impacts of human activities and climate. In this study we used 1982 to 2006 Advanced Very High Resolution Radiometer Normalized Difference Vegetation Index (AVHRR NDVI) imagery across China and the TIMESAT program to quantify annual vegetation production and its changing trend. Results showed great spatial variability in vegetation growth and its temporal trend across the country during the 25-year study period. Significant decreases in vegetation production were detected in the grasslands of Inner Mongolia, and in industrializing regions in southern China, including the Pearl River Delta, the Yangtze River Delta, and areas along the Yangtze River. Significant increases in vegetation production were found in Xinjiang, Central China, and North-east China. Validation of the NDVI trends and vegetated area changes were conducted using Landsat imagery and the results were consistent with the analysis from AVHRR data. We also found that although the causes of the vegetation change vary locally, the spatial pattern of the vegetation change and the areas of greatest impact from national policies launched in the 1970s, such as the opening of economic zones and the Three-North Shelter Forest Programme, are similar, which indicates an impact of national policies on ecosystem change and that such impacts can be detected using the method described in this paper.
英文关键词	AVHRR China remote sensing climatechange policy desertification temporal trend phenology
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4636207
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335157
作者单位	Wei Haiyan, USDA-ARS Southwest Watershed Research Center, Arizona, AZ 85719, USA.; Heilman Philip, USDA-ARS Southwest Watershed Research Center, Arizona, AZ 85719, USA.; Nearing Mark, USDA-ARS Southwest Watershed Research Center, Arizona, AZ 85719, USA.; Qi Jiaguo, Michigan State University, MI, 48824-1117, USA.; Gu Zhihui, Shenzhen University, Shenzhen, Guangdong 518060, China.; Zhang Yongguang, Beijing Normal University, Beijing 100875, China.
推荐引用方式 GB/T 7714	Wei Haiyan,Heilman Philip,Qi Jiaguo,et al. Assessing phenological change in China from 1982 to 2006 using AVHRR imagery[J],2012,6(3):227-236.
APA	Wei Haiyan,Heilman Philip,Qi Jiaguo,Nearing Mark,Gu Zhihui,&Zhang Yongguang.(2012).Assessing phenological change in China from 1982 to 2006 using AVHRR imagery.Frontiers of Earth Science,6(3),227-236.
MLA	Wei Haiyan,et al."Assessing phenological change in China from 1982 to 2006 using AVHRR imagery".Frontiers of Earth Science 6.3(2012):227-236.