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	Evaluation of ecosystem services: A case study in the middle reach of the Heihe River Basin, Northwest China
	Li H. J.; Li, Z. H.; Yu, J.; Liu, B.
	2015
关键词	Ecosystem services values Ecosystem services value coefficients Land use change Heihe River Basin land-use change valuation vulnerability scale gis
英文摘要	Ecosystem services evaluation aims at understanding the status of ecosystem services on different spatial and temporal scale. In this paper, we selected the middle reach of the Heihe River Basin (HRB), which is the second largest inland river basin in China, as one of the typical area to estimate the ecosystem services values (ESVs) corresponding to the land use changes. Based on the land use data and ecosystem service value coefficients, the total ecosystem services values (TESVs) of the middle reach of the HBR are quantitatively calculated, which were 9.244 x 108, 9.099 x 108, 9.131 x 108 and 9.146 x 108 USD in 1988, 2000, 2005 and 2008 respectively. During 1988-2008, the decrease of grassland, forest land, water area and unused land contributed 148.94%, 57.85%, 87.87% and 16.42% respectively to the net loss of TESVs, while the dramatic increase of cultivated land improved the TESVs with contribution of -211.08% to the net loss of TESVs. Expansion of cultivated land, which especially caused the loss of grassland and forest land, directly exerted negative impacts on the provision of ecosystem services in the study area. The findings of this research indicated that land use change was an important form of human activities, which had a strong impact on ecosystem services. (C) 2015 Elsevier Ltd. All rights reserved.
出处	Physics and Chemistry of the Earth
卷	89-90
页	40-45
语种	英语
ISSN号	1474-7065
DOI标识	10.1016/j.pce.2015.07.003
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/43541]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Li H. J.,Li, Z. H.,Yu, J.,et al. Evaluation of ecosystem services: A case study in the middle reach of the Heihe River Basin, Northwest China. 2015.

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