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| Characteristics of land use structure in 2009 in Changwu County, the Loess Plateau gully region |
| Zhang Jianjun1，2 , Zhang Xiaoping1，3, Chen Fengjuan3, Ma Qin1，3, Lei Yongnan1，2 , Wan Long1，3 |
| 1. The State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources,712100, Yangling, Shaanxi； 2. Graduate University of the Chinese Academy of Sciences,100049, Beijing； 3. College of Resources and Environment, Northwest A&F University, 712100, Yangling, Shaanxi ： China |
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Abstract Based on the understanding of connotation of land use structure, by using GIS technology the quantitative indices were selected to study the characteristics of land use structure in 2009 in Changwu County, Shaanxi Province, Loess Plateau gully area. The results showed that in Changwu County, the diversification indices of each town were relatively high, and centralization indices and land use degrees were generally low. The combination of land use types and Lorenz curve of each town showed that combination forms were abundant in the whole county at present. Spatial analysis ftxprftssftd the. lonation significance of each town and spatial distribution of landuse patches. Structure analysis could reflect the two distribution districts, slope in north and gully in south region. The main characteristics of land use structure in the county could be generalized as： landscape matrix constitute of, arable land and forest land patches, and regional land combination type was comprised of forest land, arable land, garden plot and unused land. The plateau-gully-slope morphological pattern of Loess Plateau provided a natural foundation of land use structure in the county. There was highly significant correlation between population density and land use degrees. Land use structure was embodied by location advantage of residents,industrial and mining land to some extent. Land use structure in Loess Plateau disagreed with economic level, so it is suggested that land use should be adjusted and optimized in this region.
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Received: 10 November 2010
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