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Water Use Efficiency-Based Multiscale Assessment of Ecohydrological Resilience to Ecosystem Shifts Over the Continent of Africa During 1992-2015

文献类型：期刊论文

作者Kayiranga, Alphonse2,3; Chen, Baozhang1,2,3,4; Trisurat, Yongyut5; Ndayisaba, Felix6; Sun, Shaobo7; Tuankrua, Venus5; Wang, Fei2,3; Karamage, Fidele3,8; Measho, Simon2,3; Nthangeni, Winny9
刊名JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
出版日期2020-08-01
卷号125期号:8页码:19
ISSN号2169-8953
DOI10.1029/2020JG005749
通讯作者Chen, Baozhang(baozhang.chen@igsnrr.ac.cn)
英文摘要The spatial-temporal representation is a crucial key for understanding at what extent terrestrial ecosystems can maintain their structure and functions and recover from various ecosystem shifts (drought/wet). Hence, it is vital for sustainable ecosystem management, adaptation, and mitigation practices. This study assessed ecohydrological resilience to ecosystem shifts at contrast water-limited and well-watered regions at multiple scales (i.e., country scale, basin scale, climate type scale, and land cover scale) over Africa during the period 1992-2015, based on Standard Evapotranspiration Deficit Index (SEDI) and water use efficiency (WUE) at ecosystem scales, which was obtained from satellite-derived evapotranspiration (ET) and simulated gross primary productivity (GPP) using the Carnegie-ames-stanford approaches (CASA) model. SEDI values indicated that 11 years were characterized by dry conditions, while 13 were wetter years during 1992-2015. WUE, ET, and GPP values indicated increased tendencies mostly in central to central west of African continent. The ecohydrological resilience exhibited that about 68.78% of African terrestrial ecosystems were highly, moderately, or slightly resilient, and about 31.22% were not resilient to ecosystem shifts with 11.28% vulnerably exposed to high risk of ecosystem shift and severely nonresilient. The extent areas exposed to severe ecohydrological nonresilience are distributed in Savannas and barelands land cover types, temperate-dry summer-hot summer (Csa), climate type, Mediterranean South Coast (B14), African-North interior (B3), and Red Sea-Golf of Aden Coast (b5) basins; and the four countries, namely, Egypt, Mauritania, Niger, and Tunisia. These findings may provide insightful scientific information about vulnerable regions for policy making and ecosystem management and increase the necessary awareness for taking reasonable adaptation mechanisms, such as afforesting open lands to increase the area of vegetation cover (i.e., choosing the drought or wet-tolerant plant species) and water conservation and management measures to ensure the sustainability of terrestrial ecosystems under ecosystem shifts over the African continent.
WOS关键词GROSS PRIMARY PRODUCTION ; FOREST PHOTOSYNTHESIS ; CLIMATE ; VEGETATION ; DROUGHT ; PHENOLOGY ; CANOPY ; NDVI ; MAP
资助项目National Key R&D Program of China[2018YFA0606001] ; National Key R&D Program of China[2017YFA0604301] ; National Key R&D Program of China[2017YFA0604302] ; National Key R&D Program of China[2017YFC0503904] ; Chinese Academy of Sciences[131A11KYSB20170025] ; State Key Laboratory of Resources and Environmental Information System[O88RA901YA] ; State Key Laboratory of Resources and Environmental Information System[O8R8A085YA] ; National Natural Science Foundation of China[41771114] ; Chinese Academy of Science-The World Academy of Science (CAS-TWAS) President's fellowship
WOS研究方向Environmental Sciences & Ecology ; Geology
语种英语
WOS记录号WOS:000612324000005
出版者AMER GEOPHYSICAL UNION
资助机构National Key R&D Program of China ; Chinese Academy of Sciences ; State Key Laboratory of Resources and Environmental Information System ; National Natural Science Foundation of China ; Chinese Academy of Science-The World Academy of Science (CAS-TWAS) President's fellowship
源URL[http://ir.igsnrr.ac.cn/handle/311030/136408]  
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.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing, Peoples R China
2.Chinese Acad Sci, State Key Lab Resource & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China
5.Kasetsart Univ, Fac Forestry, Bangkok, Thailand
6.Univ Ghent, Fac Biosci Engn, Ghent, Belgium
7.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China
8.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Watershed Geog Sci, Nanjing, Peoples R China
9.Univ Johannesburg, Fac Sustainable Urban Planning & Dev, Johannesburg, South Africa
10.Catholic Univ Mozamb, Fac Agr Sci, Ctr Agr & Sustainable Dev Res, Cuamba, Mozambique
推荐引用方式
GB/T 7714		 Kayiranga, Alphonse,Chen, Baozhang,Trisurat, Yongyut,et al. Water Use Efficiency-Based Multiscale Assessment of Ecohydrological Resilience to Ecosystem Shifts Over the Continent of Africa During 1992-2015[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(8):19.
APA Kayiranga, Alphonse.,Chen, Baozhang.,Trisurat, Yongyut.,Ndayisaba, Felix.,Sun, Shaobo.,...&Bofana, Jose.(2020).Water Use Efficiency-Based Multiscale Assessment of Ecohydrological Resilience to Ecosystem Shifts Over the Continent of Africa During 1992-2015.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(8),19.
MLA Kayiranga, Alphonse,et al."Water Use Efficiency-Based Multiscale Assessment of Ecohydrological Resilience to Ecosystem Shifts Over the Continent of Africa During 1992-2015".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.8(2020):19.

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来源：地理科学与资源研究所

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