Evapotranspiration as a response to climate variability and ecosystem changes in southwest, China

doi:10.1007/s12665-020-09007-1

	Evapotranspiration as a response to climate variability and ecosystem changes in southwest, China
	Mokhtar, Ali 1,4,7; He, Hongming 2,4,7; Alsafadi, Karam 3; Li, Yu 6; Zhao, Hongfei 4,7; Keo, Soksamnang 4,7; Bai, Chunyu 4,7; Abuarab, Mohamed 1; Zhang, Chuangjuan 4,7; Elbagoury, Khaled 5
刊名	ENVIRONMENTAL EARTH SCIENCES
	2020-06-19
卷号	79 期号:12 页码:21
关键词	Evapotranspiration Climate change Ecosystem types Ecological restoration NDVI
ISSN号	1866-6280
DOI	10.1007/s12665-020-09007-1
通讯作者	He, Hongming(hongming.he@yahoo.com) ; Li, Yu(liyuljy@163.com)
英文摘要	The aim of our study is to quantify the relationship between ecosystem and climate variables in southwest China. We further examined spatiotemporal distribution patterns of daily reference evapotranspiration (ET0) and ecosystem types through integrated approaches, including spatiotemporal interpolation, Penman-Monteith, Mann-Kendall test, statistical correlation analysis and transition matrix based on those datasets including observation climate data, satellite remote sensing images (MODIS and Landsat) and observed ecosystem data. The following results are achieved. First, changes of ET(0)were greatly influenced by the combined effects of precipitation (with a decrease rate of -13 mm/10 years) and temperature (with a decrease rate of + 0.17 celcius/10 years). The annual average ET(0)increased by + 2.1 mm/10 years, and the increased ET(0)are more than 25% of the total area. Second, evapotranspiration was regarded as a sensitive indicator of climate and ecosystem feedbacks, and these ecosystem types have a great transformation, including forest, agriculture, and grass. Forest and grass were distributed primarily in the southern and eastern mountain areas, grass was in high mountains area while agriculture was prevalent in basin areas respond to climate changes. The area of forest converted to grass was 3670 km(2), which was greater than transition from grass to forest (1720 km(2)). Correlation coefficients of evapotranspiration and NDVI were positive in forest and negative in agriculture. Third, the effects of these changes on climate vegetation and ecosystem process feedbacks on the quickly warming southwest China are potentially significant. Although the variation in ecosystem types was combined effects caused by climate variation and human activities, an effective ecological restoration program "Grain for Green" has improved the environmental conditions in southwest China.
资助项目	Projects of the National Key Research and Development Program[2017YFC0505200] ; Projects of the National Key Research and Development Program[2017YFC0505205] ; National Natural Science Foundation of China[41672180] ; Project of the Integrated Scientific Expedition of the Ailao-Wuliang Mountains National Park[2019IB018] ; Second Tibetan Plateau Scientific Expedition and Research Program[SQ2019QZKK2003] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020603] ; Science & Technology Basic Resources Investigation Program of China[2017FY101303] ; Key Platforms and Scientific Research Projects in Universities in Guangdong Province of China[2018KTSCX212] ; Guangdong Rural Science and Technology Commissioner Project of China[319B0203]
WOS关键词	RIVER-BASIN ; CROP COEFFICIENT ; SPATIOTEMPORAL CHARACTERISTICS ; SPATIAL INTERPOLATION ; PENMAN-MONTEITH ; KARST REGION ; VEGETATION ; PRECIPITATION ; TRENDS ; WATER
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000541059300001
资助机构	Projects of the National Key Research and Development Program ; National Natural Science Foundation of China ; Project of the Integrated Scientific Expedition of the Ailao-Wuliang Mountains National Park ; Second Tibetan Plateau Scientific Expedition and Research Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Science & Technology Basic Resources Investigation Program of China ; Key Platforms and Scientific Research Projects in Universities in Guangdong Province of China ; Guangdong Rural Science and Technology Commissioner Project of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162260]
专题	中国科学院地理科学与资源研究所
通讯作者	He, Hongming; Li, Yu
作者单位	1.Cairo Univ, Fac Agr, Dept Agr Engn, Giza 12613, Egypt 2.East China Normal Univ, Sch Geog Sci, Shanghai 210062, Peoples R China 3.Alexandria Univ, Fac Arts, Dept Geog & GIS, Alexandria 25435, Egypt 4.Northwest Univ Agr & Forestry, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Land Farming Loess, Yangling 712100, Shaanxi, Peoples R China 5.Ain Shams Univ, Fac Agr, Dept Agr Engn, Cairo 11241, Egypt 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources, Beijing 101400, Peoples R China 7.Northwest Univ Agr & Forestry, Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Mokhtar, Ali,He, Hongming,Alsafadi, Karam,et al. Evapotranspiration as a response to climate variability and ecosystem changes in southwest, China[J]. ENVIRONMENTAL EARTH SCIENCES,2020,79(12):21.
APA	Mokhtar, Ali.,He, Hongming.,Alsafadi, Karam.,Li, Yu.,Zhao, Hongfei.,...&He, Qilin.(2020).Evapotranspiration as a response to climate variability and ecosystem changes in southwest, China.ENVIRONMENTAL EARTH SCIENCES,79(12),21.
MLA	Mokhtar, Ali,et al."Evapotranspiration as a response to climate variability and ecosystem changes in southwest, China".ENVIRONMENTAL EARTH SCIENCES 79.12(2020):21.