[1]LIU Jie,WANG Mingxia,WU Zhaopeng.Spatiotemporal Distribution Characteristics of Soil Moisture in Surface Layer of Oasis in Jinghe Basin Under the Support of Remote Sensing Model[J].Research of Soil and Water Conservation,2016,23(03):95-99.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 03
Page number:
95-99
Column:
Public date:
2016-06-28
- Title:
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Spatiotemporal Distribution Characteristics of Soil Moisture in Surface Layer of Oasis in Jinghe Basin Under the Support of Remote Sensing Model
- Author(s):
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LIU Jie1, WANG Mingxia1, WU Zhaopeng1,2
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1. College of Geography and Tourism Science, Xinjiang Normal University, Urumqi 830054, China;
2. Municipal Key Laboratory of Arid Lake Environment and Resources, Xinjiang Normal University, Urumqi 830054, China
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- Keywords:
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remote sensing; soil moisture; spatiotemporal distribution; Jinghe Basin
- CLC:
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S152.7
- DOI:
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- Abstract:
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Soil moisture has an important influence on the change of climate, the stability of ecological environment and the development of oasis farming in the arid area. Based on the Landsat TM and ETM+ images, we selected the Oasis of Jinghe Basin as the study site and investigated the moisture changes of the topsoil in spring, summer and autumn during the period from 2002 and 2011 using the modified Temperature-Vegetation Dryness Index (TVDIm). The findings are listed as follows: (1) By comparing and measuring, we found that the R2 value of precision is 0.800 2, which means that TVDIm can better reflect the distribution of soil moisture in oasis; (2) The seasonal changes of moisture in the topsoil of the study area are significant, that is to say the moisture decreased in the order: autumn > summer > spring, and the water content is becoming higher in recent 10 years; (3) The condition of soil moisture in the inland of the study area is better than that in the transition belts and natural deserts; (4) The overlay analysis of land use indicated that human activities had the strong influence on the spatial distribution of soil moisture.