基于DPSIR模型的三亚市海岸带生态安全评价

An evaluation of ecological security of coastal zone of sanya with DPSIR model

海岸带生态安全是海洋经济发展的依托和基础。本文从海岸带复合生态系统角度出发,基于DPSIR模型,筛选26个指标以构建三亚市海岸带生态安全评价指标体系,利用综合指数法对三亚市2014—2018年海岸带生态安全状况进行评价。三亚市这五年的海岸带生态安全情况总体向好,稍有波动,等级依次为危险、较危险、预警、较安全、安全;从准则层构成来看,研究区驱动力指数呈现不断上升趋势,压力指数呈现"下降—上升—下降"的发展趋势,影响、状态、响应指数发展趋势相同,均为先上升,后有所下降。建议通过发挥政策导向、优化产业结构、完善旅游管理方式提高三亚市海岸带生态安全水平。

Coastal ecological security is the support and foundation of marine economic development.From the perspective of coastal complex ecosystem,with DPSIR model,26 indicators covering the coastal complex ecosystem were screened out to construct the evaluation index system on the coastal ecological security of Sanya City.Then the comprehensive index method was applied to evaluate the coastal ecological security status of Sanya from 2014 to 2018.The ecological security situation in the coastal zone of Sanya has improved on the whole and fluctuated slightly in the past five years,and the levels were in an order of dangerous,relatively dangerous,warning,comparatively safe and comparatively safe.From the perspective of the standard structure,the driving force index of the study area showed a continuous upward trend,and the pressure index showed a downward-rising-falling development trend.The status,influence and response index had the same development trend,all rising first and then falling.To improve the coastal ecological security level of Sanya,making full use of the policy guidance,optimizing industrial structure and improving the way of tourism management were recommended.