论乡村聚居空间结构优化模式——RROD模式

The new model of the spatial structure of rural settlements: RROD

受启于TOD理论与实践在城市地域空间结构优化过程中所发挥的重要作用,借鉴以往乡村聚居单元规模与空间结构研究成果,试图提炼出一种乡村聚居空间结构优化模式——乡村公路导向发展模式(Rural Road-Oriented Development Model,简称RROD模式),并针对概念内涵、构建原则、框架、类型、空间尺度等进行系统分析。同时,重点从设施门槛、耕作半径、邻里交往以及出行距离感知等方面对RROD合理规模与结构进行了综合论证,认为RROD规模半径一般取值范围为450~700 m,人口规模一般取值范围为1500~3500人,占地面积一般取值范围为30~75 hm2,距离一般取值范围为3.5~5.0 km。但由于该取值范围是基于均质地域及一般发展条件假设,其结论具有一般理论指导性,但在具体实践过程中,必须根据实际情况进行适当调整与修正。

Inspired by the TOD important role in the theory and practice of urban spatial structure optimization process, learning from rural settlements unit size and spatial structure research, this article tries to build a new spatial structure of rural settlement patterns—Rural Road-Oriented Development, and systematically analyze the concept of meaning, construction principles, frameworks, type, spatial scales, etc. Simultaneously, this article demonstrates the reasonable size and structure RROD unit focus from the facility threshold, farming radius,neighborhood association and the travel distance perception. This article considers the general radius of the unit range from 450 m to 700 m, population size range from 1500 m to 3500 m people, covering general range from 30 hm2 to 75 hm2, distance general range from 3.5 km to5.0 km. However, due to the geographical ranges based on homogeneous and general development conditions assumptions, this conclusion has a general theoretical guidance. So, in practice, the ranges should be properly adjusted and modified according to the actual situation.