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题名: Spatio-temporal variability in remotely sensed surface soil moisture and its relationship with precipitation and evapotranspiration during the growing season in the Loess Plateau, China
作者: Li, XY(李小英); Liu, LC(刘理臣); Duan, ZH; Wang, N
收录类别: SCIE ; EI
出版日期: 2014-02
刊名: ENVIRONMENTAL EARTH SCIENCES
卷号: 71, 期号:4, 页码:1809-1820
出版者: SPRINGER
出版地: NEW YORK
英文摘要: The distribution and variability of surface soil moisture at regional scales is still poorly understood in the Loess Plateau of China. Spatial and temporal dynamics of surface soil moisture is important due to its impact on vegetation growth and its potential feedback to atmospheric and hydrologic processes. In this study, we analyzed surface soil moisture dynamics and the impacts of precipitation and evapotranspiration on surface soil moisture using remote sensing data during the growing season in 2011 for the Loess Plateau, which contain surface soil moisture, precipitation, vegetation index and evapotranspiration. Results indicate that the areas with low surface soil moisture are mainly located in the semi-arid region. Under dry surface soil moisture, evapotranspiration temporal persistence has a higher positive correlation (0.537) with surface soil moisture temporal persistence, and evapotranspiration is very sensitive to surface soil moisture. But under wet surface soil moisture regime, surface soil moisture temporal persistence has a higher negative correlation (-0.621) with evapotranspiration temporal persistence. Correlation of surface soil moisture and monthly precipitation, evapotranspiration and vegetation index illustrated that precipitation was a significant factor influencing surface soil moisture spatial variance. The correlation coefficients between monthly surface soil moisture and precipitation was varied in different climatic regions, which was 0.304 in arid, 0.364 in semi-arid, 0.490 in transitional and 0.300 in semi-humid regions. Surface soil moisture is more sensitive to precipitation, evapotranspiration, in transitional regions between dry and wet climates.
关键词: Surface soil moisture ; SMOS ; Loess Plateau ; Remote sensing ; Regional scale
作者部门: [Li, Xiaoying] Gansu Agr Univ, Coll Resources & Environm Sci, Lanzhou 730000, Peoples R China ; [Li, Xiaoying ; Duan, Zhenghu] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China ; [Liu, Lichen] Lanzhou Univ, Coll Resource & Environm Sci, Lanzhou 730000, Peoples R China ; [Wang, Na] Shaanxi Prov Meteorol Bur, Xian 710014, Peoples R China
通讯作者: Li, XY (reprint author), Gansu Agr Univ, Coll Resources & Environm Sci, Lanzhou 730000, Peoples R China.
学科分类: Environmental Sciences & Ecology; Geology; Water Resources
文章类型: Article
所属项目编号: Natural Science Foundation of Gansu Province [1208RJYA063] ; "12th Five-Year Plan'' national science and technology support program "The ecological restoration technology integration and experiment demonstration of degraded forests-the grassland in Loess hilly area'' [2011BAC07B04]
所属项目名称: 国家科技支撑计划 ; 甘肃省青年科技基金计划
项目资助者: MOST ; GSSTD
语种: 英语
DOI: 10.1007/s12665-013-2585-7
ISSN号: 1866-6280
WOS记录号: WOS:000330780800027
EI记录号: 20140717308525
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/120389
Appears in Collections:资源环境学院_期刊论文

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Recommended Citation:
Li, XY,Liu, LC,Duan, ZH,et al. Spatio-temporal variability in remotely sensed surface soil moisture and its relationship with precipitation and evapotranspiration during the growing season in the Loess Plateau, China[J]. ENVIRONMENTAL EARTH SCIENCES,2014,71(4):1809-1820.
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