利用PSR模型的椒江河口生态系统环境质量评价

发布时间：2018-12-16 21:23

【摘要】：采用PSR(pressure-state-response)模型研究方法,筛选出32项社会经济和生态环境状态相关指标,建立河口生态系统评价体系,评价浙江省台州市椒江区河口生态系统环境质量;应用层次分析法,计算各指标的权重;根据建立的河口生态系统评价体系,对2003~2011年的椒江河口生态系统环境质量进行评价,分为优、良、中、差和劣5个等级。结果表明,2003年的研究区河口生态系统指数最大,为0.502 5,生态系统环境质量等级为中;2004~2007年,该河口生态系统指数都小于0.4,生态系统环境质量等级为差;2008~2011年,该河口生态系统指数有所增大,都大于0.4,生态系统环境质量等级都为中。椒江口河口生态系统最主要的压力是生境破坏,大规模的围海造地是生态环境质量下降的主要原因。
[Abstract]:By using PSR (pressure-state-response) model, 32 indexes of social economy and ecological environment were selected, and the evaluation system of estuarine ecosystem was established to evaluate the environmental quality of estuarine ecosystem in Jiaojiang District, Taizhou City, Zhejiang Province. According to the evaluation system of estuarine ecosystem established in 2003 ~ 2011, the environmental quality of Jiaojiang estuary ecosystem was evaluated, which was divided into five grades: excellent, good, medium, poor and bad. The results showed that the estuarine ecosystem index in 2003 was the largest (0.502 5), and the ecosystem environmental quality grade was middle, from 2004 to 2007, the estuarine ecosystem index was less than 0.4, and the ecosystem environmental quality grade was poor. From 2008 to 2011, the ecosystem index of the estuary increased to more than 0.4, and the grade of ecosystem environmental quality was medium. The main pressure of the estuary ecosystem of Jiaojiang River Estuary is habitat destruction, and large-scale land reclamation is the main reason for the deterioration of ecological environment quality.
【作者单位】：浙江省舟山海洋生态环境监测站;杭州师范大学遥感与地球科学研究院;
【基金】：国家自然科学基金项目(41206186) 浙江省科学技术厅公益重点项目(2014C23002) 浙江省环境保护厅科研项目(2012A033、2013A020)资助
【分类号】：X826

【相似文献】