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Remote Sensing Technology and Application  2018, Vol. 33 Issue (5): 965-974    DOI: 10.11873/j.issn.1004-0323.2018.5.0965
    
Study on Dynamic Remote Sensing Monitoring of LUCC and Soilwind Erosion Intensity in the Beijing-Tianjin Sandstorm Source Control Project Region
Chi Wenfeng1,2,Kuang Wenhui2,Jia Jing1,Liu Zhengjia2#br#
(1.Inner Mongolia University of Finance and Economics,Hohhot 010017,China;
2.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China)
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Abstract  The Land Use/Cover Change(LUCC) and soil wind erosion intensity of the Beijing\|Tianjin sandstorm source control project region were monitored by remote sensing.The spatial and temporal patterns of LUCC and soil wind erosion in the project region were analyzed.The results showed that there was significant difference in LUCC and soil erosion intensity before and after the project was implemented.In the recent 30 years,the LUCC process mainly manifested the change from cultivated land reclamation to ecological conversion of farmland to forest and grass,with the ecological restoration and desertification effectively inhibited.The overall arable land showed an increase and then decreased.The area of  arable land increased from 2000 to 2015,the area of cultivated land converted to forest and grassland was 446.10 km2 and 1 129.32 km2,with the most obvious in the west;the area of land for construction expanded obviously;the trend of unutilized land decreased significantly The type of conversion is dominated by grassland conversion to grassland with an area of 493.12 km2.The erosion\|mitigating modulus of soil erosion in the project region with wind\|blown sand control decreased overall,especially after the implementation of ecological engineering (p<0.001).The eastern and southern areas are covered with high\|coverage grassland and soil wind erosion in the area with the main type is small;Soil wind erosion in the Hunshandake sandy land is larger,but the overall trend is decreasing.Different land use/cover types have a greater impact on soil wind erosion intensity.The order of soil wind erosion modulus is Sandy land> Sparse grass> Moderate grass>dryland> Shrub>Paddy>Dense grass> Other woods> Sparse woods> Forest;The conversion of low coverage to high coverage grassland types effectively inhibited soil erosion (-66.12%),and the increase of vegetation coverage effectively reduced soil erosion.The soil wind erosion increased (58.26%) in the surrounding area of sandy area,the soil wind erosion increasedduring the conversion process of low coverage grassland type,and the grassland was converted into sand,and the wind erosion in the dry land increased.
Key words:  Remote sensing      LUCC      Soil wind erosion      Beijing-Tianjin sandstorm source control project region      Influence     
Received:  30 November 2017     
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Chi Wenfeng
Kuang Wenhui
Jia Jing
Liu Zhengjia

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Chi Wenfeng,Kuang Wenhui,Jia Jing,Liu Zhengjia. Study on Dynamic Remote Sensing Monitoring of LUCC and Soilwind Erosion Intensity in the Beijing-Tianjin Sandstorm Source Control Project Region. Remote Sensing Technology and Application, 2018, 33(5): 965-974.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2018.5.0965     OR     http://www.rsta.ac.cn/EN/Y2018/V33/I5/965

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