Assessment of Vegetation Dynamics and Ecosystem Resilience in the Context of Climate Change and Drought in the Horn of Africa

doi:10.3390/rs13091668

	Assessment of Vegetation Dynamics and Ecosystem Resilience in the Context of Climate Change and Drought in the Horn of Africa
	Measho, Simon 2,3,4; Chen, Baozhang 2,3,5,6; Pellikka, Petri 7,8; Guo, Lifeng 2,3; Zhang, Huifang 2,3; Cai, Diwen 9; Sun, Shaobo 10; Kayiranga, Alphonse 2,3; Sun, Xiaohong 1; Ge, Mengyu 5
刊名	REMOTE SENSING
	2021-05-01
卷号	13 期号:9 页码:20
关键词	vegetation dynamics ecosystem resilience MODIS NDVI water use efficiency climate change climate variability drought precipitation LST SPEI
DOI	10.3390/rs13091668
通讯作者	Chen, Baozhang(baozhang.chen@igsnrr.ac.cn)
英文摘要	Understanding the response of vegetation and ecosystem resilience to climate variability and drought conditions is essential for ecosystem planning and management. In this study, we assessed the vegetation changes and ecosystem resilience in the Horn of Africa (HOA) since 2000 and detected their drivers based mainly on analysis of the Moderate Resolution Imaging Spectroradiometer (MODIS) products. We found that the annual and seasonal trends of NDVI (Normalized Difference Vegetation Index) generally increased during the last two decades over the Horn of Africa particularly in western parts of Ethiopia and Kenya. The weakest annual and seasonal NDVI trends were observed over the grassland cover and tropical arid agroecological zones. The NDVI variation negatively correlated with Land Surface Temperature (LST) and positively correlated with precipitation at a significant level (p < 0.05) account for 683,197 km(2) and 533,385 km(2) area, respectively. The ecosystem Water Use Efficiency (eWUE) showed overall increasing trends with larger values for the grassland biome. The precipitation had the most significant effect on eWUE variation compared to LST and annual SPEI (Standardized Evapotranspiration Index). There were about 54.9% of HOA resilient to drought disturbance, whereas 32.6% was completely not-resilient. The ecosystems in the humid agroecological zones, the cropland, and wetland were slightly not-resilient to severe drought conditions in the region. This study provides useful information for policy makers regarding ecosystem and dryland management in the context of climate change at both national and regional levels.
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 Natural Science Foundation of China[41771114] ; National Natural Science Foundation of China[41977404] ; State Key Laboratory of Resources and Environment Information System[O88RA901YA] ; Chinese Government Scholarship
WOS关键词	WATER-USE EFFICIENCY ; HYDROCLIMATIC DISTURBANCES ; GREATER HORN ; COVER CHANGE ; RAINFALL ; TRENDS ; IMPACT ; TEMPERATURE ; FUTURE ; SAHEL
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	MDPI
WOS记录号	WOS:000655465900001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Resources and Environment Information System ; Chinese Government Scholarship
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162798]
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.Peking Univ, Coll Environm Sci & Engn, Key Lab Water & Sediment Sci, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, 11A Datun Rd, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Hamelmalo Agr Coll, Dept Land Resources & Environm, Keren 397, Eritrea 5.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Peoples R China 6.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China 7.Univ Helsinki, Dept Geosci & Geog, Earth Change Observat Lab, Helsinki 00100, Finland 8.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China 9.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 10.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Measho, Simon,Chen, Baozhang,Pellikka, Petri,et al. Assessment of Vegetation Dynamics and Ecosystem Resilience in the Context of Climate Change and Drought in the Horn of Africa[J]. REMOTE SENSING,2021,13(9):20.
APA	Measho, Simon.,Chen, Baozhang.,Pellikka, Petri.,Guo, Lifeng.,Zhang, Huifang.,...&Ge, Mengyu.(2021).Assessment of Vegetation Dynamics and Ecosystem Resilience in the Context of Climate Change and Drought in the Horn of Africa.REMOTE SENSING,13(9),20.
MLA	Measho, Simon,et al."Assessment of Vegetation Dynamics and Ecosystem Resilience in the Context of Climate Change and Drought in the Horn of Africa".REMOTE SENSING 13.9(2021):20.