基于引力和场强模型的干旱内陆河流域城乡体系相互作用及空间表达

综合运用遥感数据和相关统计资料,在对石羊河流域城乡生态环境、人口分布、经济发展深入考察研究的基础上,结合环境生态学、物理学、数理统计学、城市规划学、区域分析及可持续发展理论,通过构建城乡规模评价指标反映城乡规模及辐射范围,结合流域内部相互辐射、引力及场强模型建立遥感与GIS模型。利用引力模型分析城乡间联系的疏密程度和城镇在流域体系中的集聚能力,利用场强模型分析城镇间的辐射作用强度。结果表明:对于干旱内陆河流域区域分析研究,能充分利用到遥感和GIS技术进行空间定位和空间表达,以此建立研究区城镇规模评价指标体系,对其相互作用及联系的紧密程度可以进行直观可视化表达,从而使评价指标体系更为完善。在上述研究成果的基础上深入探讨关于石羊河流域城乡体系协调发展的整合模式,从而为石羊河流域生态环境综合治理、城乡一体化发展及经济社会协调可持续发展提供参考依据。

Spatial interactions and express of town system in dry inland river basin based on gravity and field spread model

The ecological environment,population distribution,urban and rural economic development in the Shiyang River Basin were studied combined with the environmental ecology,physics,statistics,city planning,regional analysis and the theory of sustainable development.With comprehensive application of remote sensing data and related statistical data.Remote sensing and GIS models were established based on internal radiation,gravitational and electric field model.Through the construction of urban and rural scale evaluation index to reflect the urban scale and radiation range.Gravity model was used to analyze the linking degree between urban and rural and the gathering capability of the towns in the basin system.Using field spread model to analyze the radiation effect between towns.Based on the above research achievement,we thoroughly discussed the integrated mode for the coordinated development of urban and rural system in Shiyang River basin,thereby providing references for comprehensive management of the ecological environment,the integration of urban and rural development and the sustainable development of economic society of the Shiyang River Basin.