天津市地下水生态系统服务价值演变  

Study on the evolution of service value of groundwater ecosystem in Tianjin

作　　者：耿世达 屈吉鸿[2] GENG Shida;QU Jihong(Bureau of Comprehensive Development,Ministry of Water Resources,Beijing 100053,China;North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]水利部综合事业局,北京100053 [2]华北水利水电大学,郑州450046

出　　处：《南水北调与水利科技（中英文）》2022年第6期1139-1147,共9页South-to-North Water Transfers and Water Science & Technology

基　　金：河南省重大科技专项(201300311400)。

摘　　要：基于千年生态系统评估对生态系统服务的分类方法,将天津市地下水生态系统服务功能划分为供给、调节、支持和文化4个方面,以此为基础建立地下水生态系统服务价值评估指标体系,采用价值量评估方法构建货币化的价值评估模型,对地下水生态系统服务价值进行测算,并重点分析南水北调中线工程通水前后天津市地下水生态系统服务价值演变特征。结果表明:2008—2019年,天津市地下水生态系统年均总服务价值为83.71亿元,其中,南水北调中线工程通水前(2008—2014年)为69.81亿元,通水后(2015—2019年)为103.18亿元;通水后,地下水调节服务价值、支持服务价值增大,供给服务价值减小;南水北调中线工程对地下水生态系统服务价值的贡献呈增大趋势,由2015年2.64亿元增加至2019年24.01亿元。Groundwater is an important water source for maintaining the health of the ecosystem, and it has an essential service value for ecosystem. There are more studies on the service value assessment of ecosystems such as rivers, wetlands and forests, while the study on service value assessment of groundwater ecosystems is not systematic. The service value of groundwater ecosystem in Tianjin is assessed with a view to providing a technical reference for the sustainable management of groundwater ecosystem.In essence, ecosystem service is the benefit for human beings which is provided by ecosystem. Quantitative assessment of the value of ecosystem service could be beneficial to utilizing land resources, protecting water resources and improving the quality of the ecological environment efficiently, meanwhile, it could be an important tool for the human beings to manage the ecosystem rationally. The service value of groundwater ecosystem could be defined as the benefits generated by groundwater ecosystem and ecological processes that contribute to the environment and quality of life for human beings. At present, there are few studies on the service value of groundwater ecosystem, and its assessment index system and assessment methods are still in the exploration stage;previous studies are mostly focused on static assessments. Based on the classification method of the Millennium Ecosystem Assessment for ecosystem service, the groundwater ecosystem service in Tianjin is classified as four aspects: provisioning service, regulating service, supporting service and cultural service. The roles of the service value of groundwater ecosystem could be defined as six aspects:(1) the groundwater could supply water resource to life, industry and agriculture, and it could play as the service value of water supply,(2) the groundwater could play as the service value of purifying water quality,(3) the groundwater could react with CO 2 to generate calcium carbonate, so it could play as the service value of carbon sequestration,(4) the ground

关 键 词：地下水生态系统 千年生态系统评估 服务价值 价值评估 南水北调中线工程 

分 类 号：TV211.1[水利工程—水文学及水资源]