干旱区生态环境知识资源中心(Arid): Topographical and hydrological effects on meso-scale vegetation in desert steppe, Mongolia

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	Topographical and hydrological effects on meso-scale vegetation in desert steppe, Mongolia
	Batdelger Gantsetseg; Masahide Ishizuka; Yasunori Kurosaki; Masao Mikami
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2017
卷号	9 期号:1 页码:132-142
英文摘要	This study investigated the seasonal variations of the normalized difference vegetation index (NDVI) and its relationships with climatic variables and topography in a small-scale (20 km*20 km) area (i.e., Tsogt-Ovoo village) within the desert steppe zone of Mongolia using in-situ observed climate data and satellite remote sensing data. We found that the topography is very important for vegetation growth in the desert steppe although the summer precipitation is the constraining factor. The unexpectedly high NDVI (up to 0.56), as well as the high aboveground biomass, in the valley bottom was primarily resulted from the topography-modulated redistribution of overland flow after relatively heavy precipitation events during the growing season. This makes the valley bottoms in desert steppes not only reliable feeding resources for livestock but also heavens for wild lives. But, the detected large standard deviation of annual maximum NDVI (NDVI_(max)) from 2000 to 2013 in the valley bottom in response to rather variable precipitation implies that the valley bottoms under desert steppe climates are more vulnerable to climatic change.
英文关键词	topography climatic variable desert valley vegetation soil moisture Terra-MODIS NDVI
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:5905897
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335752
作者单位	Batdelger Gantsetseg, Information and Research Institute of Meteorology, Hydrology and Environment, Ulaanbaatar, 15160, Mongolia.; Masahide Ishizuka, Faculty of Engineering, Kagawa University, Takamatsu, 761-0396, Japan.; Yasunori Kurosaki, Arid Land Research Center, Tottori University, Tottori 680-0001, Japan.; Masao Mikami, Japan Meteorological Business Support Center, Tokyo 101-0054, Japan.
推荐引用方式 GB/T 7714	Batdelger Gantsetseg,Masahide Ishizuka,Yasunori Kurosaki,et al. Topographical and hydrological effects on meso-scale vegetation in desert steppe, Mongolia[J],2017,9(1):132-142.
APA	Batdelger Gantsetseg,Masahide Ishizuka,Yasunori Kurosaki,&Masao Mikami.(2017).Topographical and hydrological effects on meso-scale vegetation in desert steppe, Mongolia.Journal of Arid Land,9(1),132-142.
MLA	Batdelger Gantsetseg,et al."Topographical and hydrological effects on meso-scale vegetation in desert steppe, Mongolia".Journal of Arid Land 9.1(2017):132-142.