气候变化领域集成服务门户(CCPortal): Drought and spring cooling induced recent decrease in vegetation growth in Inner Asia

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DOI	10.1016/j.agrformet.2012.09.014
	Drought and spring cooling induced recent decrease in vegetation growth in Inner Asia
	Mohammat, Anwar; Wang, Xuhui; Xu, Xiangtao; Peng, Liqing; Yang, Yan; Zhang, Xinping; Myneni, Ranga B.; Piao, Shilong
通讯作者	Piao, SL (通讯作者)
发表日期	2013
ISSN	0168-1923
EISSN	1873-2240
起始页码	21
结束页码	30
卷号	178
英文摘要	The response of vegetation growth to current climate change in Inner Asia (35-55 degrees N, 45-120 degrees E) was investigated by analyzing time series of the Normalized Difference Vegetation Index (NDVI) data from the Advanced Very High Resolution Radiometer (AVHRR) from 1982 to 2009. We found that at the regional scale, the greening trend observed during the 1980s was stalled in the 1990s. Different seasons, however, show different changes and mechanisms. Among the three seasons (spring, summer and autumn), summer has the earliest turning point (from greening to non-greening) in the early 1990s, as a result of summertime droughts, as indicated by Palmer Drought Severity Index (PDSI). Consistent with the change in summer NDVI, summer PDSI and precipitation significantly increased in the 1980s, but strongly decreased since the early 1990s at the regional scale. The negative effect of summer drought is particularly significant over dry regions such as eastern Kazakhstan, Mongolia and Inner Mongolia. However, in high altitude or high latitude regions (>50 degrees N), summer vegetation growth is more strongly correlated with summer temperature rather than with summer PDSI. In spring, changes in vegetation growth are closely linked with temperature changes rather than droughts. Both spring temperature and spring NDVI, for instance, increased until the late 1990s and then decreased. Statistical analyses also show that spring NDVI is significantly correlated with spring temperature at the regional scale (P < 0.05), implying that temperature is the dominant limiting factor for spring vegetation growth in most regions of Inner Asia except Turkmenistan and Uzbekistan, where spring PDSI shows significant positive correlation with spring NDVI. Further analyses of the response of vegetation to extreme high spring temperature in 1997 and extreme summer drought in 2001 exhibit a highly heterogeneous pattern. (c) 2012 Elsevier B.V. All rights reserved.
关键词	PHOTOSYNTHETIC TRENDS CLIMATE-CHANGE NORTH-AMERICA HEAT RESPONSES DATASET BOREAL INDEX CO2
英文关键词	Drought; Global warming; Spring cooling; NDVI; Vegetation growth; Inner Asia
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000322349800004
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258174
推荐引用方式 GB/T 7714	Mohammat, Anwar,Wang, Xuhui,Xu, Xiangtao,et al. Drought and spring cooling induced recent decrease in vegetation growth in Inner Asia[J]. 中国科学院青藏高原研究所,2013,178.
APA	Mohammat, Anwar.,Wang, Xuhui.,Xu, Xiangtao.,Peng, Liqing.,Yang, Yan.,...&Piao, Shilong.(2013).Drought and spring cooling induced recent decrease in vegetation growth in Inner Asia.AGRICULTURAL AND FOREST METEOROLOGY,178.
MLA	Mohammat, Anwar,et al."Drought and spring cooling induced recent decrease in vegetation growth in Inner Asia".AGRICULTURAL AND FOREST METEOROLOGY 178(2013).