近20年粤港澳大湾区生态敏感性变化  

The variation of ecological sensitivity in Guangdong-Hong Kong-Macao Greater Bay Area in recent 20 years

作　　者：甘琳 陈颖彪[1,2] 吴志峰 千庆兰[1] 郑子豪 GAN Lin;CHEN Ying-biao;WU Zhi-feng;QIAN Qing-lan;ZHENG Zi-hao(College of Geographical Sciences,Guangzhou University,Guangzhou 510006,China;Guangdong Province Engineering Technology Research Center for Geographical Condition Monitoring and Comprehensive Analysis,Guangzhou 510006,China）.)

机构地区：[1]广州大学地理科学学院,广州510006 [2]广东省地理国情监测与综合分析工程技术研究中心,广州510006

出　　处：《生态学杂志》2018年第8期2453-2462,共10页Chinese Journal of Ecology

基　　金：广东省自然科学基金项目(2016A030313551);国家自然科学基金项目(41771127);广东省国土资源科研专项(GDGTKJ2017001)资助

摘　　要：生态敏感性评价分析是研究区域生态潜在问题的一个重要方法,对区域的生态规划和管理起着重要的作用。本文从自然生态、城市扩张、生态服务方面选取了7个敏感因子,构建了敏感因子等级指标体系,利用层次分析法(AHP),在GIS分析平台下得到单因子和综合生态敏感性评价分析结果。结果表明:(1)1997—2007年,不敏感、轻度敏感区比重增加了3.91%,中度敏感区比重减少了0.57%,极高、高敏感区比重减少了3.31%,整体生态敏感性降低;(2)2007—2017年,不敏感、轻度敏感区比重增加了2.38%,中度敏感区比重减少了3.71%,极高、高敏感区比重增加了1.32%,整体生态敏感性仍呈下降趋势。(3)敏感性高的地区主要分布在肇庆市、惠州市、江门市的林地及自然保护区,这些地区的生态系统易受干扰,应加强生态环境的保护;敏感性低的地区主要分布在广州市、深圳市、佛山市等中心城市,这些地区的生态系统稳定性强,可以在保证生态系统安全的情况下合理开发利用。研究结果可为粤港澳大湾区绿色可持续性发展和环境管理提供科学依据。Ecological sensitivity assessment, an important method to study the potential problems of regional ecology, plays an important role in regional ecological planning and management. In this study, we selected seven sensitive factors from the aspects of natural ecology, city expansion and ecological services, and established level index system of sensitive factors. We assessed ecological sensitivity of single factors and comprehensive factors using the analytic hierarchy process （AHP） under GIS platform. The results showed that： （1） From 1997 to 2007, the proportion of zones with nonsensitivity or low sensitivity increased by 3.91%, the proportion of moderate sensitive zone decreased by 0.57%, and the proportion of extreme sensitivity zone and high sensitivity zone decreased by 3.31%, indicating an overall reduction in ecological sensitivity. （2） From 2007 to 2017, the proportion of zones with nonsensitivity or low sensitivity increased by 2.38%, the proportion of moderate sensitivity area decreased by 3.71%, and the proportion of extreme sensitivity zone and high sensitivity zone increased by 1.32%, indicating an overall declining trend of ecological sensitivity. （3） High sensitivity areas were mainly distributed in woodlands and nature reserves in Zhaoqing, Huizhou, and Jiangmen. Ecosystems in these areas were vulnerable to disturbance, so protection should be strengthened. Low sensitivity areas were mainly distributed in Guangzhou, Shenzhen, Foshan and other central cities where ecosystems had good stability. These ecosystems can be reasonably exploited and utilized when their safety is guaranteed. Our results provide scientific basis for green sustainable development and environmental management in the Guangdong Hong KongMacao Greater Bay Area.

关 键 词：粤港澳大湾区 生态敏感性评价 时空变化 因子评价分析 层次分析(AHP) 

分 类 号：X826[环境科学与工程—环境工程]