半城市化地区生态系统服务对土地利用/覆被变化的响应——以厦门市集美区为例

半城市化地区是在快速城市化进程中产生的一种过渡地域类型, 其土地利用特征表现为土地利用竞争和矛盾剧烈, 土地利用变化迅速的特征。土地利用/覆被的变化改变生态系统的结构与功能, 是对生态系统服务产生胁迫的主要驱动力之一。本文以厦门市集美半城市化地区为例, 分析半城市化地区生态系统服务对土地利用/覆被变化的响应, 基于对2007 年中国陆地生态系统服务价值当量修正的方法, 对半城市化地区生态系统服务价值(ESV)变化作出评估, 并通过土地系统和生态系统二者的耦合变化关系探讨生态系统服务对土地利用/覆被变化的响应过程。结果表明:①近20 年来, 集美半城市化地区生态系统服务价值总量随着土地利用强度增加呈现波动性变化, 总体上呈现负相关关系。②调节服务和文化服务是最主要的生态系统服务类型;土地利用强度与调节服务和支持服务呈现显著的负相关关系。③随着半城市化地区的快速城市化发展, 土地利用类型急剧转化, 城市建设用地大量增加, 预计集美半城市化地区未来ESV将继续降低, 可采取生态综合整治措施减缓ESV降低趋势。

Response of Ecosystem Services to Land Use/Cover Change in Peri-urban Area:A Case Study of Jimei District,Xiamen

Peri-urban area emerged with the rapid urbanization and is a new transitional region between urban and rural areas.The most important characteristics of the peri-urabn areas are the large rates of changes and conflicts between landuses.Through the change of ecosystem’s internal structure and function,land use/cover change(LUCC) has affected the values of ecosystem services and has been a major driving factor.Taking Jimei District(a peri-urban area) in Xiamen City as an example,the authors examined the land use pattern from 1987 to 2007 by integrating remote sensing data and evaluate the regional ecosystem services based on the revised method of equivalent value per unit area of ecosystem services in China in 2007.The coupling changes between land systems and ecosystem services were used to identify the effects and mechanisms of LUCC on ecosystem services.Results showed that along with the promotion of land use intensity,the total ecosystem services values had shown a curved trend of change,with supplying and regulating service being main ecosystem service types;land use intensity was negative for supplying,regulating,and supporting cultural services.With the rapid urbanization in Jimei District,there will be more land to be transformed to construction land.It can be predicted that the decreasing trend of ecosystem service value will continue in the future,and we should use the ecological comprehensive treatment to slow down that trend.