顾及空间产水特征的城市湿地生态系统服务价值估算  

Estimation of Ecosystem Service Value of Urban Wetlands Considering Spatial Water Yield Characteristics

作　　者：伍丽君 胡最[1,2] WU Lijun;HU Zui(College of Geography and Tourism,Hengyang Normal University,Hengyang 421002;National and Local Joint Engineering Institution for Digital Preservation and Creative Use Technologies of Traditional Villages and Towns,Hengyang 421002,China)

机构地区：[1]衡阳师范学院地理与旅游学院,湖南衡阳421002 [2]传统村镇文化数字化保护与创意利用技术国家地方联合工程实验室,湖南衡阳421002

出　　处：《地理与地理信息科学》2023年第6期28-35,64,共9页Geography and Geo-Information Science

基　　金：国家自然科学基金项目(41771188);湖南省社科评审课题(XSP22YBC618);湖南省教育厅重点项目(21A0435);衡阳师范学院基金项目(2021HSKFJJ031)。

摘　　要：现有城市湿地生态系统服务价值(WESV)研究较少关注城市建成区对湿地生态系统的影响。该文借鉴降水量时空调节因子修正当量因子表的方法,引入产水量时空调节因子,估算2017年、2019年和2021年衡阳市中心城区建成区湿地生态系统服务价值。研究结果表明:①2021年衡阳市中心城区建成区未修正的WESV比2017年减少16.95亿元,而基于降水量修正的WESV比2017年增加10.79亿元,基于产水量修正的WESV比2017年增加12.77亿元。②相比基于降水量修正的WESV,基于产水量修正的WESV 2017年减少6.28亿元,2019年减少5.05亿元,2021年减少4.3亿元,表明产水量调节因子能反映降水量、植被覆盖和土层类型等自然特征,有效降低自然气候对生态系统服务价值估算的不利影响,进而提高WESV估算的准确性。The urban wetland plays an important role in the urban ecosystem,which has functions that cannot be replicated by other ecosystems.It is crucial to assess the wetland ecosystem service value(WESV).Existing research on the WESV gives little consideration to the impact of urbanized areas on wetland ecosystem.To improve the estimation of the service value of urban wetland ecosystem,a water yield factor is introduced,based on the method of modifying the equivalence factor table by the spatial and temporal regulation of precipitation.The WESV of the built-up area in the central city of Hengyang is estimated in 2017,2019 and 2021.It is found as follows.①The uncorrected WESV in the built-up area of the central city of Hengyang decreased by 1695 million yuan in 2021 compared with 2017.What′s more,the WESV based on precipitation correction increased by 1079 million yuan in 2021 compared with 2017,and the WESV based on water yield correction increased by 1277 million yuan in 2021 compared with 2017.②Compared with the corrected WESV with precipitation,the corrected WESV with water yield decreased by 628 million yuan in 2017,505 million yuan in 2019,and 430 million yuan in 2021.The water yield factor can reflect the natural characteristics such as precipitation,vegetation and soil layer type,effectively reduce the adverse effects of natural climate on the estimation of WESV,and improve the accuracy of WESV estimation.

关 键 词：城市湿地生态系统 服务价值 建成区 产水量 当量因子修正 

分 类 号：X171.1[环境科学与工程—环境科学]