Watershed management,groundwater recharge and drought resilience:An integrated approach to adapt to rainfall variability in northern Ethiopia

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Rainfall variability coupled with poor land and water management is contributing to food insecurity in many sub-Saharan African countries such as Ethiopia.To address such challenges,various efforts have been implemented in Ethiopia.The objective of this study was to evaluate the long-term impacts of different soil and water conservation and water harvesting interventions on groundwater and drought resilience of the Gule watershed,northern Ethiopia.The study involved:(i)documentation of the ap-proaches followed and the technologies implemented in Gule since the 1990s,(ii)monitoring the hy-drological effects of the interventions for ten years,and(iii)evaluation of the effects of the interventions on groundwater(level and quality),spring discharge and suspended sediment concentration(SSC)in runoff.Results showed that interventions were implemented at different stages and scales.As a result of the interventions,the watershed was transformed into a landscape resilient to rainfall variability:(a)dry shallow groundwater wells have become productive and the level of water in wells has raised,(b)the groundwater quality has improved,(c)SSC in high floods has reduced by up to 65％,(d)discharge of existing springs has increased by up to 73％and new springs have started to emerge.Due to improved water availability,irrigated land has increased from less than 3.5 ha before 2002 to 166 ha in 2019.Communities have remained water-secure during an extreme drought in 2015/2016.Implementation of watershed management practices has transformed the landscape to be resilient to rainfall variability in a semi-arid environment:a lesson for adaptation to climate variability and change in similar environments.

外文关键词：

Climate changeGreen and blue waterLandscape restorationWater harvesting

作者：

Kifle Woldearegay、Berhane Grum、Rudi Hessel、Frank van Steenbergen、Luuk Fleskens、Eyasu Yazew、Lulseged Tamene、Kindu Mekonnen、Teklay Reda、Mulu Haftu

展开 >

作者单位：

School of Earth Science,Mekelle University,P.O.Box 231,Mekelle,Ethiopia

School of Civil Engineering,Mekelle Institute of Technology-Mekelle,Mekelle University,P.O.Box 3185,Mekelle,Ethiopia

Soil,Water and Land Use Team,Wageningen Environmental Research,P.O.Box 47 6700 AA,Wageningen,The Netherlands

MetaMeta Research,Postelstraat 2,5211,EA's-Hertogenbosch,The Netherlands

Soil Physics and Land Management Group,Wageningen University,P.O.Box 47 6700 AA,Wageningen,The Netherlands

Department of Land Resource Management and Environmental Protection,Mekelle University,P.O.Box 231,Mekelle,Ethiopia

International Centre for Tropical Agriculture(CIAT),Addis Ababa,Ethiopia

International Livestock Research Institute(ILRI),Addis Ababa,Ethiopia

Wukro Saint Mary College,Wukro,Tigray,Ethiopia

展开 >

出版年：

2024

DOI：

10.1016/j.iswcr.2023.08.009

国际水土保持研究(英文)

ISSN：2095-6339

年,卷(期)：2024.(3)