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[1]LIU Xuru,ZHANG Lin,YANG Lei,et al.The Effects of Ecological Cropland-Conversion on Landscape Pattern Change and Its Topography Driving in Loess Hilly Region[J].Research of Soil and Water Conservation,2016,23(01):103-109,116.

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The Effects of Ecological Cropland-Conversion on Landscape Pattern Change and Its Topography Driving in Loess Hilly Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 01 Page number: 103-109,116 Column: Public date: 2016-02-28

Title:: The Effects of Ecological Cropland-Conversion on Landscape Pattern Change and Its Topography Driving in Loess Hilly Region

Author(s):: LIU Xuru¹, ZHANG Lin¹, YANG Lei², QIU Yang¹, WANG Jun³; 1. School of Geography, Beijing Normal University, Beijing 100875, China;
2. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
3. Land Consolidation and Rehabilitation Center, Ministry of Land and Resources, Beijing 100812, China

Keywords:: loess hilly region; ecological cropland-conversion; land use; landscape pattern; topography driving

CLC:: Q14;F301.24

DOI:: -

Abstract:: Significant effects of large-scale ecological cropland-conversion on land use, landscape pattern and its ecosystem service have taken place in the loess hilly region. A typical small catchment in loess hilly region, Da’nangou Catchment, was chosen, and the filed investigation and GIS analysis were combined to analyze the land use structure change, landscape pattern change and its topography driving during the period from 1975 to 2007. The results showed that the spontaneous shift of farmland occurred before large-scale ecological cropland-conversion, during this period, area of cropland and waste-grassland reduced a little while forestland increased. The number of patches became more, the landscape pattern became more complex and fragmentation became more serious. In 2000, area of cropland reduced greatly, the proportion of natural waste-grassland and abandoned land was 75% of the area of the whole catchment, and forestland increased after the implementation of large-scale ecological cropland conversion. Shape of all landscape types became simple and the distribution became homogeneous and concentration. With the increase of ecological cropland-conversion years, area of forestland increased continuously, but small area of cultivation occurred during this period. Meanwhile, landscape structure became more complex, but whole landscape pattern became more reasonable. Relative altitude and slope were the two most important topography impact factors on the ecological cropland conversion. After the implementation of large-scale ecological cropland conversion, the distribution of cropland and orchard tends to area with the lower altitude and gentle slope, and natural waste-grassland had no significant changes, while the distribution of abandoned land and forestland tends to the area with higher altitude and steep slope.

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