基于PSR模型的唐海湿地生态退化评价  

Based on PSR Model Degradation Assessment of Wetland Eco-environment in Tanghai

作　　者：张国臣[1,2] 张义文[1] 李爽[1] 蔡易洁 孙凯军[1] 

机构地区：[1]河北师范大学资源与环境科学学院,石家庄050024 [2]河北省环境演变与生态建设重点实验室,石家庄050024

出　　处：《湖北农业科学》2014年第4期784-787,共4页Hubei Agricultural Sciences

基　　金：河北省自然科学基金项目(D2010000414)

摘　　要：以1989年和2009年的遥感影像为信息源,在GIS技术的支持下建立了河北省唐山市唐海县唐海湿地信息数据库,并且以压力—状态—响应(PSR)模型为研究方法,建立了湿地生态环境评价体系。通过选取反映压力、状态及响应的指标,对当地湿地生态环境的动态变化进行了分析。结果表明,1989—2009年,唐海地区自然湿地大幅减少,人工湿地面积相对增加,湿地总面积不断减少,湿地的生态服务功能有所下降;湿地的内部结构和状态发生了显著的变化,大量的滩涂湿地和河流湿地通过人工排水的方式转化为耕地。Using remote sensing data in 1989 and 2009 as basic information resource, the spatial information database of tanghai wetland was established with support of GIS. A set of assessment indicators of wetland eco-environment was set up according to pressure-state-response（PSR） model. The dynamic change of wetland eco-environment was analyzed by selecting assessment indicators reflecting pressure,state,response. The results showed that the natual wetland was seriously decreased while the artificial wetland was increased from 1989 to 2009, resulting in the decrease of the wetland ecosystem services function. The changes obviously occured in the structure and state of wetland. A lot of mudflat and marshes were changed into cultivated land through artificial drainage.

关 键 词：唐海湿地 压力—状态—响应(PSR)模型 生态环境 景观变化 

分 类 号：X821[环境科学与工程—环境工程]