Quantification of the ecosystem carrying capacity on China's Loess Plateau

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Quantification of the ecosystem carrying capacity on China's Loess Plateau
	Liang, Wei ; Fu, Bojie ; Wang, Shuai ; Zhang, Weibin ; Jin, Zhao ; Feng, Xiaoming ; Yan, Jianwu ; Liu, Yu ; Zhou, Sha
刊名	ECOLOGICAL INDICATORS
	2019-06
卷号	101 页码:192-202
关键词	Revegetation Climate change Socio-economic systems Ecosystem carrying capacity Sustainable water resources Loess Plateau
ISSN号	1470-160X
英文摘要	Revegetation, especially afforestation, has served as an important tool for controlling desertification. However, revegetation in water-limited regions will inevitably reduce the water available for socio-economic systems, which is poorly considered in decision-making on sustainable ecosystem management. This paper proposed a framework to determine the threshold of vegetation productivity (i.e., ecosystem carrying capacity), corresponding to available water resources for ecosystems (i.e., annual precipitation minus water demand for socioeconomic systems) on the Loess Plateau. The average annual ecosystem carrying capacity (ECC) during 1982-2012 is 577 +/- 124 g Cm-2 yr(-1), with spatial gradients increasing from northwest to southeast. Vegetation in rocky mountain areas has the largest value of 833 +/- 200 g Cm-2 yr(-1). Factorial analysis suggests that changes in precipitation and human water use contributed to 55% and 45% of the multi-decadal changes in regional ECC, respectively. Meanwhile, due to revegetation, 26 counties on the Loess Plateau, mainly in the southeast and eastern parts, have exceeded the ECC threshold during the study period. An additional 138 counties have a high potential for water competition between the ecosystems and socio-economic systems. At the regional scale, there are 9 years (similar to 30% of the study period) during which the ECC threshold has been exceeded, especially after 1997. Considering the climate change in the future and the growing demand for water in socioeconomic systems, the corresponding ECC threshold will increase by 6-36%. We believe that these findings can provide reference for policy-makers to make decisions towards ecosystem sustainability while meeting human needs for water resources.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42776]
专题	生态环境研究中心_城市与区域生态国家重点实验室
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China 3.Shaanxi Normal Univ, Natl Demonstrat Ctr Expt Geog Educ, Xian 710119, Shaanxi, Peoples R China 4.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Liang, Wei,Fu, Bojie,Wang, Shuai,et al. Quantification of the ecosystem carrying capacity on China's Loess Plateau[J]. ECOLOGICAL INDICATORS,2019,101:192-202.
APA	Liang, Wei.,Fu, Bojie.,Wang, Shuai.,Zhang, Weibin.,Jin, Zhao.,...&Zhou, Sha.(2019).Quantification of the ecosystem carrying capacity on China's Loess Plateau.ECOLOGICAL INDICATORS,101,192-202.
MLA	Liang, Wei,et al."Quantification of the ecosystem carrying capacity on China's Loess Plateau".ECOLOGICAL INDICATORS 101(2019):192-202.