Acta Geographica Sinica ›› 2014, Vol. 69 ›› Issue (1): 42-53.doi: 10.11821/dlxb201401004

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Land use change in the reach from Hekouzhen to Tongguan of the Yellow River during 1998-2010

LUO Ya1,2, YANG Shengtian1, LIU Xiaoyan3, LIU Changming4,5, SONG Wenlong1,6, DONG Guotao7, ZHAO Haigen1, LOU Hezhen1   

  1. 1. School of Geography, Beijing Normal University, Beijing 100875, China;
    2. School of Geographic and Environmental Sciences, Guizhou Normal University, Guiyang 550001, 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. China Institute of Water Resources and Hydropower Research, Beijing 100044, China;
    7. Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China
  • Received:2013-09-25 Revised:2013-10-30 Online:2014-01-20 Published:2014-01-20
  • Contact: 杨胜天(1965-),男,教授。主要研究方向:水资源与水环境遥感。
  • 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: In order to evaluate the effect of Grain for Green Policy in the reach from Hekouzhen to Tongguan of the Yellow River, based on dryness/wetness, geomorphic type, slope gradient and aspect, from macroscopic to microcosmic, three indicators, including (a) a land use change significance index, (b) a land use change proportion (c) a vegetation change index, are used to characterize the primary transformation types, the intensity of land use changes, and the degree of vegetation restoration in the period 1998-2010. The results show that: (1) The area of land use change accounted for 19.19% of the study area. High coverage grassland, forest, and other woodland increased significantly, while low coverage grassland, farmland decreased markedly. (2) Spatially, land use change was found primarily west of the Yellow River, between 35 and 38 degrees north latitude, including Malian River basin, Beiluo River basin, Yanhe River basin. (3) The transformation types, including low coverage grassland to moderate coverage grassland, moderate coverage grassland to high coverage grassland, farmland to other woodland, shrub to forest were the primary types resulting from land use change. (4) The effect of dryness/wetness, geomorphic type and slope gradient on land use change was significant, but that of aspect on land use change was not so clear.

Key words: slope gradient, aspect, dryness/wetness, the reach from Hekouzhen to Tongguan of the Yellow River, geomorphic type, land use change