摘要
利用物质量和价值量相结合的方法,从涵养水源、调蓄洪水、气体调节、水质净化、保护土壤、营养循环6个方面构建了湿地生态系统服务价值模型,基于1988年和2002年2期TM遥感图像解译数据,根据模型计算并分析了宝应县湿地生态系统服务价值的变化情况。结果表明,1988～2002年的14年里,湿地面积大量减少,而湿地生态系统服务价值从205440.14万元增加为219253.21万元,增长了13813.07万元;湿地类型的服务价值结构发生了巨大变化,由1988年以稻田和滩地为主转为2002年以稻田为主;湿地生态系统服务类型的价值排序为:气体调节>保护土壤>调蓄洪水>营养循环>水质净化>涵养水源。
Using the physical and value assessment methods,the service value model of wetland ecosystem was built,which included water holding,water regulation,gas regulation,water quality decontamination,soil conservation and nutrient cycling.Based on the interpreted data of the Landsat TM images in 1988 and 2002,the changes of service value of wetland ecosystem in Baoying were calculated and analyzed according to the model.During 1988-2002,the area of wetland reduced significantly and the service value of wetland ecosystem increased from 2 054.40 million yuan to 2 192.53 million yuan with an advancement of 138.13 million yuan.The service value structure of wetland types had undergone important adjustments,dominating from rice paddy and bottomland to rice paddy.The order of service type value of wetland ecosystem was gas regulationsoil conservationwater regulationnutrient cyclingwater quality decontaminationwater holding.
出处
《安徽农业科学》
CAS
北大核心
2010年第12期6447-6449,6533,共4页
Journal of Anhui Agricultural Sciences
基金
国家自然科学青年基金项目(20080146)
南京信息工程大学科研启动项目(20070133)
关键词
湿地
生态系统服务价值
动态变化
宝应县
Wetland
Ecosystem service value
Dynamic change
Baoying County
