基于生态规划的长春市土地生态适宜性评价

Evaluation on Ecological Applicability of Land in Changchun City Based on Ecological Planning

土地生态适宜性评价是进行城市生态规划的基础。根据土地生态适宜性评价结果可对城市建设用地进行划分。以长春市为例,综合考虑地质、水文、植物、土地利用等因子,对不同因子赋予不同的权重值,采用层次分析法(AHP)和GIS手段相结合的方法,将各因子进行加权叠加计算,可得出长春市土地生态适宜性评价,并将其划分为保护区、保育区、缓冲区和适宜建设区;为合理有效地安排土地资源利用方式和长春市生态规划土地类型提供依据。从保证自然生态系统和人居生态系统和谐共处的角度为城市土地利用提出建议,为下一步进行城市生态规划提供有益补充和尝试。

Ecological applicability evaluation on land is the basis for ecological planning. According to the eco logical applicability evaluation urban land construction can be evaluated. Using Changchun City as an exam ple, comprehensively considering the geology, hydrology, plants, land use and other factors, endowing the different weights to different factors, using the analytic hierarchy process （AHP） and GIS, calculating each factor through a weighted superposition, we get the conclusion of ecological applicability evaluation in Changchun city. The results show that land construction would be divided into protected area, conservation area, buffer area and constructive expansion permitted zone. It provides reasonable and effective basis for utilization of land resources and land type of ecological planning in Changchun City. From the viewpoints of nat ural ecological system and human settlement ecosystem harmony, the suggestions for urban land use was put forward, which provide for the beneficial supplement and try of urban ecological planning.