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| Analysis on the spatial pattern of landscape in Liujiaxia Reservoir Area |
(1.Research Institute of Water and Soil Conservation of Gansu, 730020, Lanzhou, China;
2.College of Earth and Environmental Sciences, Lanzhou University, 730000, Lanzhou, China） |
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Abstract In order to provide the basis for the layout of agricultural production and ecological recovery plan, Nianzigou typical small watershed in Dongxiang County in the north of Liujiaxia Reservoir and Sanpinggou typical small watershed in Jishishan County in south of Liujiaxia Reservioir were researched in this paper. Combined with field investigation, aerial photo were interpreted by ArcGIS and ArcView, impact of land use pattern, the way and intensity of artificial interference on landscape spatial pattern were analysed. The results showed that：1）The landscape matrix in north and south of Liujiaxia Reservoir were waste hillside and gully. It is difficult to make use of this land. 2）Characteristics of landscape patch in north of reservoir area was more complex than the south，so ecological condition in south of the reservoir area was suitable for agricultural production. 3）Landscape diversity in south of the reservoir area was higher and landscape types was richer than the north, however, landscape in north of the reservoir area was less interfered by human activities than south and higher connectivity because of less precipitation. 4）In terms of adjusting land use structure and rural industrial structure， composite ecological agriculture and forestry production could be proposed in south of the reservoir area and grain for grass in steep slope, developing agriculture and husbandry cooperatively and closing management could be proposed to accelerate ecological restoration.
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Received: 29 June 2012
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