应用生态学报2017，Vol.28Issue(4)：1326-1336,11.DOI:10.13287/j.1001-9332.201704.007
不同类型城市快速扩张区域人工景观对自然景观的生态安全胁迫效应比较
Comparition of ecological security stress effects of artificial landscapes on natural landscapes in different rapid urban sprawl areas
摘要
Abstract
The expansion of built-up area will cause stress effect on the regional natural ecological security pattern during urbanization process.Taking rapid expanding regions of four inland and coastal cities as study areas,including Tongzhou in Beijing,Zhengding in Hebei,Tanggu in Tianjin and Xiamen in Fujian,we constructed regional landscape stress indexes according to the principle of landscape ecology and comparatively analyzed the landscape pattern characteristics of rapid expanding regions and the differences of stress effect of artificial landscapes on four natural landscapes ecological security pattern in the process of rapid urbanization.Results showed that landscape erosion indexes of Tongzhou,Zhengding,Tanggu and Xiamen in 2015 were 1.039,0.996,1.239 and 0.945,respectively,which indicated that the natural landscapes were eroded significantly.Natural landscape types of those four regions presented different threatened levels.Among all natural landscape types,unused land and waters were worst threatened in Tongzhou,Zhengding and Tanggu,while in Xiamen cultivated land and waters showed the highest threat levels.The waters threat indexes of those four areas were all more than 0.743.Landscape isolation indexes of waters and unused land of the inland cities were greater than those of coastal cities,which meant water distribution of inland cities in the space was less gathered than that of coastal cities.Besides,compared with the other natural landscape,unused land and waters suffered the largest stress from artificial landscapes.关键词
城镇化/区域生态安全/生态威胁/景观格局/生态保护Key words
urbanization/regional ecological security/ecological stress/landscape pattern/ecological protection引用本文复制引用
林美霞,吝涛,邱全毅,孙彩歌,邓富亮,张国钦..不同类型城市快速扩张区域人工景观对自然景观的生态安全胁迫效应比较[J].应用生态学报,2017,28(4):1326-1336,11.基金项目
本文由国家自然科学基金项目(41371540)和高分辨率对地观测系统重大专项(41201598)资助 This work was supported by the National Natural Science Foundation of China(41371540)and the Major Project of China High Resolution Earth Observation System(41201598). （41371540）
