【摘要】 以漳江口红树林湿地为研究对象,选取2005、2011、2015及2017年Google Earth影像为基础数据源,基于土地覆盖数据构建红树林湿地生态系统健康评价指标体系,结合压力-状态-响应(PSR)模型及生态系统健康指数,探究红树林湿地生态系统健康状况的时空分异特征及影响因素。结果表明:(1) 2005―2017年漳江口红树林湿地生态系统健康状况呈恶化趋势,健康等级由亚健康转变为一般,其中压力、响应健康状况大幅下降,状态健康状况略微改善;(2) 2005―2017年研究区各子区域间健康状况存在明显差异,前阶段(2005―2011年)健康指数从大到小依次为西部>中部>东部>北部>南部,后阶段(2015―2017年)健康指数从大到小依次为东部>中部>西部>北部>南部;(3)海平面上升、互花米草入侵、水产养殖池与网箱养殖扩增及海堤建设等是研究区湿地生态系统健康恶化的主要原因,同时保护区的建设及多种保护措施的实施对湿地生态系统健康维持具有积极作用。更多还原

【Abstract】 Based on land cover data of 2005,2011,2015 and 2017 from Google Earth,we established the health assessment index system of mangrove swamp ecosystem in Zhangjiang Estuary. Combining with pressure-state-response( PSR) model and ecosystem health index,temporal and spatial differentiation of ecosystem health and driving factors of health level for mangrove swamp were analyzed. The results showed that:( 1) From 2005 to 2017,the health status of mangrove swamp gradually deteriorated from sub-health to general health. The health status of pressure and response decreased dramatically,while the state health status improved slightly.( 2) From 2005 to 2017,there were significant differences in health status among sub-regions. In the first stage( i.e. from 2005 to 2011),the health index from large to small was in order of the west region,the middle region,the east region,the north region and the south region. In the second stage( i.e. from 2015 to 2017),the health index from large to small was in order of the east region,the middle region,the west region,the north region,and the south region.( 3) The increases of sea level,Spartina alterniflora invasion,aquaculture expansion,and seawall construction were the major driving factors for the deterioration of mangrove swamp ecosystem health.Meanwhile,nature reserve establishment and conservation measure implementation played positive roles in maintaining mangrove swamp ecosystem health.更多还原