基于生态功能保护的景观生态格局及绿道规划研究

Landscape Ecological Pattern and Greenway Planning Based on Ecological Function Protection

针对生态功能脆弱、景观格局破碎等环境问题,提出基于生态功能保护的景观生态格局及绿道规划。分析斑块要素类型,细分为耕地、园林、草地等多种景观;从非空间和空间结构两方面选择景观格局规划指标,构建景观动态规划模型;探究绿道构成要素,选择影响生态功能的脆弱性因子,具体分析因子的生态敏感性,针对敏感性高的地区予以重点保护,敏感低的地区合理开发;计算环度指数、点线率和网络连接度三个指标,确定最佳绿道规划方案。实例研究表明,所提规划方案能更加合理、高效利用闲置土地,增大绿道密度,有利于发挥生态保护功能。

Aiming at environmental problems such as fragile ecological functions and fragmented landscape patterns,a landscape ecological pattern and greenway planning based on ecological function protection are proposed.The paper analyzed the types of patch elements and subdivide them into various landscapes such as cultivated land,gardens,and grasslands.It selected landscape pattern planning indicators from two aspects of non-spatial and spatial structures,and build a dynamic landscape planning model.The study explored the constituent elements of greenways,and selected the elements that affect ecological functions.Ecological sensitivity factor were analyzed and to protect areas with high sensitivity and and rationally develop for areas with low sensitivity.Three indicators of ring index,point line rate and network connectivity are determined in order to set up the best greenway proposal.The case study shows that the proposed planning scheme can make more reasonable and efficient use of idle land,increase the density of greenways and help to play the ecological protection function.