干旱区生态环境知识资源中心(Arid): From blue to green water and back again: Promoting tree, shrub and forest-based landscape resilience in the Sahel

Arid

DOI	10.1016/j.scitotenv.2020.140002
	From blue to green water and back again: Promoting tree, shrub and forest-based landscape resilience in the Sahel
	Ellison, David; Speranza, Chinwe Ifejika
通讯作者	Ellison, D
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	739
英文摘要	Enjoying the potential climate benefits of restoration requires linking key forest-water and land-atmosphere interactions to the existential benefits provided on the ground. We apply what we call the forest-water and land-atmosphere interaction lens to current strategies for improving landscape resilience in the West African Sahel and the concept of the Great Green Wall (GGW). The severe and extensive drought of the 1970's-1990's led many to assess future climate and promote strategies to counter the gradual southward expansion of the Sahara. The idea for the GGW, a wall of trees intended to slow desert encroachment, grew out of this period of tremendous upheaval and human tragedy. Despite partial recovery in the local rainfall regime, we know far too little about whether the GGW strategy can even work. Further, it seems disingenuous to ignore the climatic envelope, which sets the boundaries within which forest-water and land-atmosphere interactions occur. Applying the forest-water and land-atmosphere interaction lens to landscape restoration as a tool for achieving improved resilience and human welfare in the Sahel provides meaningful input for re-thinking the GGW strategy. We upgrade current knowledge with the specific biophysical conditions likely to better support appropriate forest-water and land atmosphere interactions in the region and further fit such approaches within the context of the climatic envelope. The principal components of an improved strategy include a focus on large scale precipitation recycling all the way from the West African coast on into the Sahel, as well as improved tree, shrub and forest cover in the Sahel proper to promote infiltration, groundwater recharge, rainfall triggering potential and land surface cooling. Agroforestry can further broadly promote landscape resilience in the greater region. Strategies broadly focused on increasing rainfall recycling, water availability and the promotion of landscape resilience appear more likely to steer future efforts in useful directions. (C) 2020 The Author(s). Published by Elsevier B.V.
英文关键词	Great Green Wall Sahel Sub-Saharan Africa Forest landscape restoration Forest-water interactions Ecosystem-based adaptation
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000561793600008
WOS关键词	CLIMATE-CHANGE ; WEST-AFRICA ; LAND-COVER ; HYDRAULIC REDISTRIBUTION ; OBSERVATIONAL EVIDENCE ; TROPICAL FORESTS ; RAINFALL REGIME ; ANNUAL CYCLE ; PLANT-ROOTS ; PART II
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325764
作者单位	[Ellison, David; Speranza, Chinwe Ifejika] Univ Bern, Inst Geog, Land Syst & Sustainable Land Management Unit, Bern, Switzerland; [Ellison, David] Swedish Univ Agr Sci, Dept Forest Resource Management, Umea, Sweden; [Ellison, David] Ellison Consulting, Baar, Switzerland
推荐引用方式 GB/T 7714	Ellison, David,Speranza, Chinwe Ifejika. From blue to green water and back again: Promoting tree, shrub and forest-based landscape resilience in the Sahel[J],2020,739.
APA	Ellison, David,&Speranza, Chinwe Ifejika.(2020).From blue to green water and back again: Promoting tree, shrub and forest-based landscape resilience in the Sahel.SCIENCE OF THE TOTAL ENVIRONMENT,739.
MLA	Ellison, David,et al."From blue to green water and back again: Promoting tree, shrub and forest-based landscape resilience in the Sahel".SCIENCE OF THE TOTAL ENVIRONMENT 739(2020).