环杭州湾城市群土地利用的空间冲突与复杂性

土地利用的空间冲突与复杂性研究可为土地利用空间管控提供理论依据和实践支撑。以环杭州湾城市群1990年、2000年、2008年和2013年四期遥感影像为例,分析土地利用系统复杂性、脆弱性及动态性,计算空间冲突综合指数。结果表明：土地利用空间冲突等级表现为一般冲突>中度冲突>轻度冲突>重度冲突;空间冲突的空间格局呈现团状、块状及带状聚集模式分布,具有明显的梯度特征;随着时间的推移,空间冲突的空间自相关性减弱,并具有明显的边缘效应。研究区土地利用空间冲突表现为均衡→打破原有均衡→出现空间自相关→出现空间趋势→形成空间自组织的演变规律。土地利用空间冲突从多核心向单核心模式发展,区域发展水平较高且发展趋于均衡。

Land use spatial conflicts and complexity:A case study of the urban agglomeration around Hangzhou Bay,China

Land use conflicts are important and a concern for urban managers, especially in a rapid urbanization areas. Managers need to understand land use conflicts better so that they could make optimal decisions on land use allocations and conflict management. However, land use conflicts are complicated. With the rapid urbanization process, the land spatial configuration of contradictory uses may cause spatial conflicts. The urban agglomeration around Hangzhou Bay (UAHB), China, is a typical rapid urbanization area, and also experienced a significant expansion of urban land and dramatic changes to the urban land use spatial configuration through urban growth and their geographic determinants. In this paper, a case study of spatial-temporal variance and complexity of land use conflict was conducted in the UAHB, as to provide theoretical basis and practical support for managing land use conflict. Based on four dimensions (space - time - scale - gradient) and the analysis of land use system complexity as well as vulnerability and dynamics, the comprehensive index of land use spatial conflicts has been conducted by constructing the comprehensive calculation model and using geographic information systems (GIS), remote sensing images (RS) of four years (1990, 2000, 1990 and 2013), and spatial statistics and landscape metrics. The results show that: (1) land use conflicts grade presented an order of general conflicts > moderate conflict > slight conflict > high conflict; (2) the spatial pattern of land use conflicts, characterized by clumps, block and banded space aggregation, showed obvious gradient evolution; (3) with the elapse of time, the spatial autocorrelation of land use conflicts have been waning gradually, and have obvious edge effect; (4) the random factors and structural factors are affecting land use conflicts. The paper concludes that (1) land use conflicts showed an evolvement rule, i.e., equilibrium→break the original balance→the spatial autocorrelation→trend in space→self-organizing (fractal); (2) the development of land use conflicts evolved from the multi-core to the single core model, which means the balanced development of the high degree of integration of urban and rural areas and urban agglomerations.