【作者】 郭宏斌；

【导师】 黄义雄；

【作者基本信息】 福建师范大学 ， 自然地理学， 2010， 硕士

【摘要】 目前,在城市景观系统中改善与提高生态功能网络的连接对提升城市生态系统的功能及价值、限制城市格局蔓延具有重要意义。本文以厦门市为例,利用RS、GIS技术绘制研究区景观类型图。结合因子分析法和熵值法探讨研究区各景观组分的生态功能阻力；在GIS软件辅助下,利用最小耗费距离模型提取生态功能网络中廊道的最佳路径,最终通过网络结构分析确定生态功能网络的最优框架。在此基础上提出生态功能网络优化及建设方案。研究结果表明：(1)研究区面积密度指数、邻近度和蔓延度指数、形状指数三个类型内部的众多景观格局指数中,部分指数存在相关性。(2)CA、PD、IJI、MESH、SPLIT、AI、LSI、PARA-MN、PARA-CV、FRAC-AM指数及ESV值构成了研究区景观生态功能阻力的评价指标体系。(3)对最小耗费距离模型分级构建的网络体系进行网络结构分析可以看出,研究区大部分城市森林及公共绿地在空间上分布不均,建成区内作为生态“垫脚石”的部分城市绿地在空间和功能上被孤立,在生态功能薄弱区域无法形成有效的网络覆盖。建成区内部分生态功能结点质量较低,生态系统稳定性差,生态功能流无法形成良好的衔接。更多还原

【Abstract】 Currently, improving the connection of ecological function network is meaningful to the promotion of the urban ecosystem function and value, and the restriction of urban pattern’s speed in urban landscape system. Taking Xiamen as an example and adopting remote sensing (RS) and geographical information system (GIS) technology, this paper makes the map of the landscape type in the researching area. Using factor analysis and the entropy method, the ecological function resistance among all the landscape components in the study area was established. With the assistance of GIS software, the optimal path of corridors in ecological function network was extracted on the basis of the "least cost" modeling and the optimized framework of ecological function network was confirmed by the network structural analysis. On this basis, optimization and construction projects about ecological function network were put forward.The results indicated as follows:(1) Among various landscape pattern metrics, the area and density metrics, proximity and contagion metrics and shape metrics have partial correlation. (2) CA、PD、IJI、MESH、SPLIT、AI、LSI、PARA-MN、PARA-CV、FRAC-AM index and ESV were chosen as the evaluation index system of ecological function resistance in the study area. (3)From analyses of the ecological function network set up hierarchically using the "least cost" modeling, it showed that most urban forest and public green space distribution vary in space. Considered as the ecological stepping-stone in the current urban areas, some urban green space was isolated in both space and function is unable to form effective network coverage. Some ecological function nodes in current urban area have lower quality. Stability of the ecological system is poor and the ecological function flow cannot connect very well.更多还原