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Land Use/Land Cover Changes and Associated Impacts on Water Yield Availability and Variations in the Mereb-Gash River Basin in the Horn of Africa

文献类型：期刊论文

作者Measho, Simon2,3,4; Chen, Baozhang2,3,5,6; Pellikka, Petri7,8; Trisurat, Yongyut1; Guo, Lifeng2,3; Sun, Shaobo9; Zhang, Huifang2,3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
出版日期2020-07-01
卷号125期号:7页码:16
ISSN号2169-8953
DOI10.1029/2020JG005632
通讯作者Chen, Baozhang(baozhang.chen@igsnrr.ac.cn)
英文摘要Climate variability and drought are increasing in the Horn of Africa. Evaluating land use/land cover (LULC) changes and their impacts on water availability and variation are vital for regional land use planning and water resources management. LULC changes during 2000-2015 were estimated using high-resolution Landsat images and the Google Earth Engine cloud platform, and land use dynamic index (K). The impact of LULC change on water yield was evaluated using the Integrated Valuation of Ecosystem Services and Tradeoff (InVEST) model. The results at a regional scale show that there were rapid decreases in the area of forests and barren lands (-K) while there was a drastic increase in the built-up area (+Kvalues). The transition was found to occur from forested land to low and very low biomass areas with 51.13% and 16.7%, respectively. There were similar LULC changes in the Mereb-Gash River Basin. The mean annual water yield increased for all the catchments during 2000-2015 and with the peak in 2005. The highest annual sum water yield decreased in the forested lands from 43.18 million m(3)in 2000 to 4.1 million m(3)in 2015. There was a strong positive correlation between areal changes (%) and the annual water yield variations (%) for all the LULC types except for water body, and the correlation was significantly positive for forest (p < 0.01). The study demonstrates that the decrease in forested areas and expansion in the built-up areas had large impacts on water yield. The impacts may increase pressure on ecosystem services, exacerbate water scarcity, and food insecurity.
WOS关键词ECOSYSTEM SERVICES ; BIODIVERSITY ; CLIMATE ; FUTURE ; EVENTS ; TOOLS
资助项目National Key R&D Program of China[2017YFA0604301] ; National Key R&D Program of China[2017YFA0604302] ; National Key R&D Program of China[2018YFA0606001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA 20030302] ; National Natural Science Foundation of China[41771114] ; National Natural Science Foundation of China[41271116] ; State Key Laboratory of Resources and Environment Information System[O88RA901YA] ; Chinese Government Scholarship
WOS研究方向Environmental Sciences & Ecology ; Geology
语种英语
WOS记录号WOS:000556580000002
出版者AMER GEOPHYSICAL UNION
资助机构National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; State Key Laboratory of Resources and Environment Information System ; Chinese Government Scholarship
源URL[http://ir.igsnrr.ac.cn/handle/311030/158166]  
专题中国科学院地理科学与资源研究所
通讯作者Chen, Baozhang
作者单位1.Kasetsart Univ, Fac Forestry, Bangkok, Thailand
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Hamelmalo Agr Coll, Dept Land Resources & Environm, Keren, Eritrea
5.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geoma Tics Engn, Nanjing, Peoples R China
6.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China
7.Univ Helsinki, Dept Geosci & Geog, Earth Change Observat Lab, Helsinki, Finland
8.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan, Peoples R China
9.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China
推荐引用方式
GB/T 7714		 Measho, Simon,Chen, Baozhang,Pellikka, Petri,et al. Land Use/Land Cover Changes and Associated Impacts on Water Yield Availability and Variations in the Mereb-Gash River Basin in the Horn of Africa[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(7):16.
APA Measho, Simon.,Chen, Baozhang.,Pellikka, Petri.,Trisurat, Yongyut.,Guo, Lifeng.,...&Zhang, Huifang.(2020).Land Use/Land Cover Changes and Associated Impacts on Water Yield Availability and Variations in the Mereb-Gash River Basin in the Horn of Africa.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(7),16.
MLA Measho, Simon,et al."Land Use/Land Cover Changes and Associated Impacts on Water Yield Availability and Variations in the Mereb-Gash River Basin in the Horn of Africa".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.7(2020):16.

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