Acta Geographica Sinica ›› 2014, Vol. 69 ›› Issue (1): 64-72.doi: 10.11821/dlxb201401006

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Characteristics of soil and water conservation measures change in the watershed slope of the middle Yellow River Basin

ZHOU Xu1,2, YANG Shengtian1, LIU Xiaoyan3, LIU Changming4,5, ZHOU Qiuwen1, ZHAO Haigen1, LUO Ya1,6, MA Hongbing7   

  1. 1. State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing 100875, China;
    2. School of Land and Resource, China West Normal University, Nanchong 637009, Sichuan, China;
    3. Yellow River Conservancy Commission, Zhengzhou 450003, China;
    4. College of Water Science, Beijing Normal University, Beijing 100875, China;
    5. Key Laboratory of Land Water Cycle and Surface Process, CAS at IGSNRR, Beijing 100101, China;
    6. School of Geographic and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China;
    7. The Monitoring Center of Soil and Water Conservation and Ecological Environment of Yellow River, Xi'an 710021, China
  • Received:2013-09-10 Revised:2013-10-27 Online:2014-01-20 Published:2014-03-21
  • Contact: 杨胜天(1965-),男,贵州贵阳人,教授,博士生导师,主要从事水资源与水环境遥感研究。E-mail:yangshengtian@bnu.edu.cn E-mail:yangshengtian@bnu.edu.cn
  • Supported by:
    National Key Technologies R&D Program, No.2012BAB02B00; Public Welfare Fund of the Ministry of Water Resources of China, No.201101037; The Fundamental Research Funds for the Central Universities

Abstract: This study chose multi-source remote sensing images to extract spatial information, and designed three parameters. It applied integrated cluster analysis and factors contribution model to research the variation of watershed slope in the rich and coarse sediment area of the middle Yellow River Basin. Conclusions can be drawn as follows. (1) The watershed slope characteristics of the study area have changed from 1998 to 2010, including a great increment of forest, grassland and terrace area, and vegetation coverage has restored obviously. (2) There are 7 types of watershed slope variation, which are the result of changes of soil and water conservation measures. According to contribution rates, they are named as type-1 dominated by vegetation coverage change, type-2 by vegetation coverage and land use change, type-3 by land use and vegetation coverage change, type-4 by vegetation coverage and terrace area change, type-5 by terrace area and vegetation coverage change, type-6 by terrace area change and type-7 by multi-source factors. (3) The spatial distribution of each type has its unique geomorphic background, and the future work should take the watershed slope characteristics and geomorphic patterns into account, and should assess the sensitivity of different hydrological and sediment yield models rationally.

Key words: soil and water conservation measures, the middle Yellow River basin, variation, rich and coarse sediment area, slope