基于微观空间单元的景观城市化水平对土地利用变化的影响

The impact of landscape-urbanization upon land use change with microscopic data

以深圳为研究案例,综合利用遥感数据、土地利用详查数据、政府部门资料和实地调查资料等多种数据源,引入GIS格网分析、空间分析和栅格数据分析等方法科学地绘制了基于微观空间单元的深圳景观城市化水平分布图,从定量角度揭示了建设用地增长、土地转移分布及速度和土地利用整体变化速度在景观城市化水平梯度上的分布规律,并归纳出了景观城市化水平梯度上土地利用变化速度的一般数学模型,拓展和丰富了城市化对土地利用变化的影响研究内容。

After a brief review of the studies on the impacts of the land use change of urbanization within and outside China, taking Shenzhen as the case study, makes a thorough and careful study on the impact of land use change upon landscape urbanization with data of microscopic levels of Shenzhen. Applying both qualitative and quantitative analysis, using G[S spatial analysis techniques, G[S grid analysis and spatial grid data analysis techniques, this study investigates the horizontal distribution of Shenzhen＇ s landscape-urbanization on the spatial unit of 30m ~ 30m grids, thereafter a mathematical model of land use change at the horizontal gradient has been built up. On the basis of these analysis, it further examines the horizontal distribution features of land use changes such as the construction land development, the spatial transfer rate and the change speed of land use. In this way, this paper contributes to the understanding of the interactions between urbanization and land use changes in a high-speed urbanization context.