作　　者： (刘照程）; (吴斌）; (韦志飞）;

机构地区： 广东省岭南综合勘察设计院,广州510663

出　　处： 《中南林业调查规划》 2017年第2期33-40,共8页

摘　　要： 利用景观生态安全格局优化构建生态网络是实现区域可持续发展的有效措施。以广州白云区为例,结合粒度反推法、主成分分析和累积耗费距离模型,对白云区的景观生态安全格局进行优化研究。结果表明:1)1 000 m粒度的生态景观组分结构具有最好的整体连通性,是白云区客观选取生态源地的参考,选取了11个生态源地,构建了21条生态廊道和18个生态节点,组成了白云区的生态网络;2)人为干扰和地形地貌造成了白云区生态源地空间分布和规模的差异,最大生态源地占源地面积的64.05%,对当地生态系统的发展起主导作用;3)生态节点形成了17个生态建设区,总面积578.79 hm^2,人类活动是阻碍生态流运行的主要因素。 Using landscape tive measure to promote the ecological security pattern optimization to structure ecological network is an effec- sustainable development of region. This paper took Baiyun district of Guangzhou city as example, combining granularity inverse method, principal component analysis and accumulative cost distance model to carry on the study of landscape ecological security pattern optimization so that to provide refer- ence for the local ecological construction. The results showed that： 1 ） The ecological landscape component construction of 1 000 m granularity had a best overall connectivity and it was a suitable reference for the selec- tion of ecological sources. There were 11 ecological sources, 21 ecological corridors and 18 ecological nodes chosen in Baiyun district. 2） The reason of different space distribution and scale of ecological sources was man -made jamming. The ratio of the maximum ecological source to the total area of ecological sources was 64. 05 %, and it played the leading part in the development of local ecological system. 3 ） Ecological nodes formed 17 ecological construction areas in Baiyun district and their total area was 578.79 hm2. Human activity was the major factor which hinder the run of ecological flow.

关 键 词： 景观生态安全格局 粒度反推法 主成分分析 累积耗费距离模型 生态网络