基于MCR模型的苏南水网乡村生态安全格局构建

Construction of Rural Ecological Security Pattern in Water Networked Southern Jiangsu Based on MCR Model

构建苏南水网乡村生态安全格局,对于水网地区环境保护、生态修复具有现实意义。文章以吴江区莺脰湖片区为例,通过生境质量分析、景观连通性分析、生物多样性服务分析识别生态源地,借助MCR模型构建阻力面以生成廊道以及生态战略点,构建水网乡村生态安全格局。结果显示:从莺脰湖片区共识别生态源地11处,面积4.77 km~2;生成生态廊道55条,总长度36.5 km,其中关键生态廊道11条,长度16.1 km;生成生态战略点16个。在此基础上,从加强生态源地保护、强化生态廊道连接、优化生态踏脚石建设等方面提出水网乡村生态安全格局优化策略,为保护苏南乡村地区生态环境与景观风貌提供参考。

It is of practical significance to construct the rural ecological security pattern in the water-networked southern Jiangsu for environmental protection and ecological restoration in water-networked areas. Taking Yingdouhu District of Wujiang City as an example, this paper identifies the ecological source area through habitat quality analysis, landscape connectivity analysis and biodiversity service analysis, uses MCR model to construct the resistance surface, and generates corridors and ecological strategic points, to build the rural ecological security pattern based on water network. The results show that there are 11 ecological source areas, with an area of 4.77 km~2;55 ecological corridors, with a total length of 36.5 km, including 11 core ecological corridors with a length of 16.1 km;and 16 ecological strategic points. According to the research results, the strategies for optimizing the rural ecological environment are put forward from the aspects of strengthening ecological source area protection, enhancing ecological corridor connectivity and optimizing ecological stepping stone setup, thus providing a reference for protecting ecological environment and landscape style in southern Jiangsu Province.