Satellite-Based Analysis of Evapotranspiration and Water Balance in the Grassland Ecosystems of Dryland East Asia

doi:10.1371/journal.pone.0097295

	Satellite-Based Analysis of Evapotranspiration and Water Balance in the Grassland Ecosystems of Dryland East Asia
	Xia, Jiangzhou 1,2; Liang, Shunlin 1,2,3; Chen, Jiquan 4; Yuan, Wenping 5; Liu, Shuguang 6; Li, Linghao7 ; Cai, Wenwen 5; Zhang, Li 8; Fu, Yang 5; Zhao, Tianbao 9; Feng, Jinming 2,9; Ma, Zhuguo 9; Ma, Mingguo 10; Liu, Shaomin 1,11; Zhou, Guangsheng 12; Asanuma, Jun 13; Chen, Shiping7 ; Du, Mingyuan 14; Davaa, Gombo 15; Kato, Tomomichi 16; Liu, Qiang 1,2; Liu, Suhong 1,11; Li, Shenggong 17; Shao, Changliang 7; Tang, Yanhong 18; Zhao, Xiang 1,2
	2014
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	9 期号:5
摘要	The regression tree method is used to upscale evapotranspiration (ET) measurements at eddy-covariance (EC) towers to the grassland ecosystems over the Dryland East Asia (DEA). The regression tree model was driven by satellite and meteorology datasets, and explained 82% and 76% of the variations of ET observations in the calibration and validation datasets, respectively. The annual ET estimates ranged from 222.6 to 269.1 mm yr(-1) over the DEA region with an average of 245.8 mm yr(-1) from 1982 through 2009. Ecosystem ET showed decreased trends over 61% of the DEA region during this period, especially in most regions of Mongolia and eastern Inner Mongolia due to decreased precipitation. The increased ET occurred primarily in the western and southern DEA region. Over the entire study area, water balance (the difference between precipitation and ecosystem ET) decreased substantially during the summer and growing season. Precipitation reduction was an important cause for the severe water deficits. The drying trend occurring in the grassland ecosystems of the DEA region can exert profound impacts on a variety of terrestrial ecosystem processes and functions.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0097295
收录类别	SCI
语种	英语
WOS关键词	GROSS PRIMARY PRODUCTION ; NET PRIMARY PRODUCTION ; MONGOLIAN PLATEAU ; LAND-COVER ; CLIMATE ; MODIS ; CHINA ; PRECIPITATION ; IMPROVEMENTS ; DROUGHTS
WOS研究方向	Science & Technology - Other Topics
WOS记录号	WOS:000339563400018
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	National High-Technology Research and Development Program of China [2013AA122800] ; Freedom Project of the State Key Laboratory of Cryospheric Sciences [SKLCS-ZZ-2013-2-2] ; Chinese Academy of Sciences ; National Science Foundation for Excellent Young Scholars of China [41322005] ; Program for New Century Excellent Talents in University [NCET-12-0060] ; NASA-NEWS Program [NN-H-04-Z-YS-005-N] ; Cold and Arid Regions Environmental and Engineering Research Institute
作者邮箱	sliang@umd.edu ; yuanwpcn@126.com
作品OA属性	Green Published, gold
引用统计	被引频次：27[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27351
专题	植被与环境变化国家重点实验室
作者单位	1.Beijing Normal Univ, State Key Lab Remote Sensing Sci, Beijing, Peoples R China 2.Chinese Acad Sci, State Key Lab Remote Sensing Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China 3.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China 4.Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA 5.Nanjing Univ Informat Sci & Technol, Int Ctr Ecol Meteorol & Environm IceMe, Sch Appl Meteorol, Nanjing, Jiangsu, Peoples R China 6.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 7.Cent South Univ Forestry & Technol, State Engn Lab Southern Forestry Appl Ecol & Tech, Changsha, Hunan, Peoples R China 8.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China 9.Chinese Acad Sci, Key Lab Digital Earth Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China 10.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm Res Temperate East A, Beijing, Peoples R China 11.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China 12.Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China 13.Chinese Acad Meteorol Sci, Beijing, Peoples R China 14.Univ Tsukuba, Ctr Res Isotopes & Environm Dynam, Tsukuba, Ibaraki, Japan 15.Natl Inst Agroenvironm Sci, Dept Agrometeorol, Tsukuba, Ibaraki 305, Japan 16.Inst Meteorol & Hydrol, Juulchin, Ulaanbaatar, Mongolia 17.Hokkaido Univ, Res Fac Agr, Sapporo, Hokkaido, Japan 18.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 19.Natl Inst Environm Studies, Ctr Environm Biol & Ecosyst Studies, Tsukuba, Ibaraki, Japan
推荐引用方式 GB/T 7714	Xia, Jiangzhou,Liang, Shunlin,Chen, Jiquan,et al. Satellite-Based Analysis of Evapotranspiration and Water Balance in the Grassland Ecosystems of Dryland East Asia[J]. PLOS ONE,2014,9(5).
APA	Xia, Jiangzhou.,Liang, Shunlin.,Chen, Jiquan.,Yuan, Wenping.,Liu, Shuguang.,...&Zhao, Xiang.(2014).Satellite-Based Analysis of Evapotranspiration and Water Balance in the Grassland Ecosystems of Dryland East Asia.PLOS ONE,9(5).
MLA	Xia, Jiangzhou,et al."Satellite-Based Analysis of Evapotranspiration and Water Balance in the Grassland Ecosystems of Dryland East Asia".PLOS ONE 9.5(2014).

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