A sedimentological connectivity approach for assessing on-site and off-site soil erosion control services

doi:10.1016/j.ecolind.2020.106434

	A sedimentological connectivity approach for assessing on-site and off-site soil erosion control services
	Liu, Yu 1,2; Zhao, Liang 2,3; Yu, Xiubo 1,2
刊名	ECOLOGICAL INDICATORS
	2020-08-01
卷号	115 页码:10
关键词	Soil erosion control services Sedimentological connectivity Valuation Ecosystem service delivery Ecosystem service accessibility
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2020.106434
通讯作者	Liu, Yu(liuyu@igsnrr.ac.cn)
英文摘要	Soil erosion, a widely-occurring phenomenon in the terrestrial environment, affects land productivity and infrastructure security negatively both on-site and off-site. Therefore, soil erosion control services (SECS) are one of the most fundamental ecosystem services for human well-being. Although previous SECS assessments elaborated the benefits from preventing on-site soil erosion and soil loss comprehensively, the off-site benefits remain vague. They are usually estimated only through multiplying the capacity of on-site soil erosion prevention by land-use-based, and spatially consistent, allocation coefficients. The corresponding overestimation, item omission, and inability to represent the spatial heterogeneity of SECS may lead to great uncertainties. In addition, the SECS decay with travel distance is not well represented, because of a neglect of the cascading nature of SECS formation and its delivery. Here, to address these deficiencies, a cascade framework for SECS assessment is developed that incorporates the concept of sedimentological connectivity over the landscape. This approach quantifies both the on-site soil erosion prevention and mitigation of sediment delivery over the landscape, based on an understanding of the cascading nature of soil erosion and sediment delivery, by referring to the framework of WATEM/SEDEM that potentially reveals the sedimentological connectivity over landscape. A monetized valuation of SECS delivered to local communities was derived by employing a land-use based replacement cost technique, which takes cultivated land units as a SECS receiver and conveyer. The approach was applied in a loess catchment located in the middle Yellow River basin, China as a case study. For this watershed, with an area of 54.2 km(2), the gross soil erosion reduction was up to 156.93 x 10(4) t; the reduction of sediment input was 11.28 x 10(4) t; and the reduction in gross sediment export is up to 181.34 x 10(4) t. The monetized SECS value delivered to utilized land units was 910.13 x 10(4) CNY. The approach described provides a tool that specifically addresses the SECSs directly useful to humans, contributes to quantifying the soil erosion control services provided by the landscape, and improves the reliability of SECS evaluation.
资助项目	National Natural Science Foundation of China of the International Partnership Program of the Chinese Academy of Sciences[41671186] ; National Natural Science Foundation of China of the International Partnership Program of the Chinese Academy of Sciences[41390464] ; National Natural Science Foundation of China of the International Partnership Program of the Chinese Academy of Sciences[121311KYSB20170004]
WOS关键词	ECOSYSTEM SERVICES ; LOESS PLATEAU ; LANDSCAPE ; FLOW ; CONSERVATION ; DELIVERY ; MANAGEMENT ; DEMAND ; QUANTIFICATION ; PREVENTION
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000561438700031
资助机构	National Natural Science Foundation of China of the International Partnership Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/157962]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Yu
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 3.Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yu,Zhao, Liang,Yu, Xiubo. A sedimentological connectivity approach for assessing on-site and off-site soil erosion control services[J]. ECOLOGICAL INDICATORS,2020,115:10.
APA	Liu, Yu,Zhao, Liang,&Yu, Xiubo.(2020).A sedimentological connectivity approach for assessing on-site and off-site soil erosion control services.ECOLOGICAL INDICATORS,115,10.
MLA	Liu, Yu,et al."A sedimentological connectivity approach for assessing on-site and off-site soil erosion control services".ECOLOGICAL INDICATORS 115(2020):10.