黄土高原沟壑区生态城镇整合方法

A tentative study of reorganization of ecological towns in the gully areas of the loess plateau

人口“塬面化”是黄土高原沟壑区城镇化发展的新动向,及早提出整合对策加以引导对于维护脆弱生态环境和人居环境的健康发展具有现实意义.初步探讨了生态方法在整合研究中的实际应用.在分析了人口塬面化的特征、动力机制和负面效应的基础上,提出了以“黄土塬”为人居单元的整合构想,运用层次分析法、地图叠加法进行了综合生态适宜性和生态敏感性分析和区划,结合景观生态学“斑块—廊道—基底”原理提出了“大分散、大聚集”的生态整合模式和相应的树枝型多中心组团模式和均衡增长模式.

＂Population transfer from hilly areas to tablelands＂is a new trend in urbanization process in gully areas of the loess plateau. It is of realistic significance to work out reorganization measures as soon as possible so as to safeguard the fragile ecological environment and ensure the sound development of human settlements. This thesis carries out an initial investigation into the actual application of ecological methods in the study of reorganization. Based on the analysis of the characteristics, motive mechanism and the negative effects of the population transfer to tablelands, the thesis puts forward its concept of taking＂loess tableland＇as the unit of human settlement. It gives a step and earto-superpositional analysis and division of the ecological suitability and ecological sensibility. Abiding by the landscape ecology principle of ＂patch-corridor-matrix＂, it recommends the reorganization pattern of ＂big scattering ＆ big gathering＇and the corresponding branch-like multi-center assembling mode and the balanced growth mode.