基于PSR模型的红树林生态系统健康评价体系——以广东省为例

主要阐述了PSR(pressure-sate-response)模型的概念及内容,基于PSR模型并结合层次分析法(AHP法,analyticalhierarchy process),建立了红树林生态系统健康评价体系,依据综合健康指数(CHI)值将各红树林湿地健康状况划分为很健康、健康以及亚健康三个等级;基于VB实现了评价体系的可视化,结合实际调查,对可视化评价体系进行验证。结果表明,广东省廉江市高桥镇红树林为80.54(CHI),广东省珠海市淇澳岛红树林为60.35(CHI),广东省湛江市特呈岛红树林为53.87(CHI),所得结果与实际调查情况一致;该可视化体系科学、快速、实用,可满足红树林生态系统健康评价的工作需要。

The assessment system of mangrove ecosystem health applying the PSR model: a case study of Guangdong Province

In this paper the concept and content of the pressure-sate-response (PSR) model were discussed. The PSR model combined with analytical hierarchy process (AHP) is employed to establish a assessment system for mangrove ecosystem health. Based on a comprehensive health index (CHI) value, the health of mangrove ecosystems can be divided into three states: excellent, healthy and sub-healthy. The assessing system achieves visualization by Microsoft Visual Basic (VB). Combined with the actual findings of the mangrove, the visual assessing system is verified. The CHI of the mangrove of Gaoqiao Town in Zhanjiang City of Guangdong Province is 80.54. The CHI of the mangrove of Qiao Island of Zhuhai City in Guangdong Province is 60.35. The CHI of the mangrove of Techeng Island of Zhanjiang City in Guangdong Province is 53.87. The results are consistent with the investigation. The visualization system will be used scientifically, rapidly and practically with the health assessing for the mangrove ecosystem.