贵阳市土地利用景观的社会经济梯度变化分析

Analysis on the Social and Economic Gradient Change of Land Use Landscape in Guiyang City

【目的】探讨贵阳市土地利用景观的社会经济梯度变化特征。【方法】运用了景观格局指数计算和景观梯度分析相结合的方法,研究贵阳市2000、2010年土地利用景观的城乡、人口密度、交通梯度变化。【结果】1在景观类型上,各种土地利用景观类型的面积及比例、破碎度、形状复杂性随距城区、交通的远近和人口密度大小在各梯度带上呈现出一定的变化趋势;2在景观水平上,沿距城乡、交通和人口密度梯度方向土地利用景观的破碎度变化由大到小,整体景观类型面积趋于均衡化,分离度下降,聚集度增强。【结论】贵阳市土地利用景观的社会经济梯度变化明显,其中退耕还林还草政策和城镇化发展是社会经济梯度变化的主导因素。

【Objective】This article aimed to explore the social and economic characteristics of gradient change of land use landscape pattern in Guiyang.【Method】The calculation of landscape pattern index and the analysis of landscape gradient were combined to research the urban-rural,population density,traffic gradient changes of Land use landscape in Guiyang in 2000,2010.【Results】1In landscape types,with the distance from urban,traffic and population density,the area,proportion,broken degreeand shape complexity of various landscape types of land use presented certain trends of change in gradient zones of each size.2In landscape levels,along the gradient direction of urban-rural,traffic and population density,the fragmentation degree of land use landscape changed from big to small,the area of overall landscape type tended to equilibrium,the separation degree decreased and the aggregation degree enhanced.【Conclusion】The social and economic gradient of land use landscape in Guiyang city changed obviously.The policy of returning farmland to woodland,grassland and the urbanization development are the leading factors of the social economic gradient change.