1990—2020年广西海岸带生态系统服务价值时空变化分析

广西滨海是西部陆海主通道的出海口,研究其海岸带土地利用变化与生态系统之间的关系具有重要意义。以广西海岸带1990—2020年共6期的土地利用数据为基础,采用当量价值评价法、市场价格法等方法,分析研究区近30年生态系统服务价值(ESV)的时空变化特征。研究表明：研究区土地变化以耕地、基塘和建设用地面积增减为主;其生态系统服务以调节服务功能为主,占比约70%;基塘是当地生态系统的重要组成部分;研究区ESV变化受主要变化地类的影响显著。

Spatial-temporal Changes of Ecosystem Service Value in Guangxi Coastal Zone from 1990 to 2020

Guangxi Binhai is the seaport of the main western land and sea passage, so it is important to study the relationship between land use change and ecosystem in its coastal zone. Based on the land use data of Guangxi coastal zone in six periods from 1990 to 2020, the temporal and spatial variation characteristics of ecosystem service value (ESV) in the study area in recent 30 years were analyzed by using equivalent value evaluation method and market price method. The researches show that in the past 30 years, the land change in the study area is mainly the increase or decrease of cultivated land, foundation pond and construction land area. Its ecosystem services are mainly regulating services, accounting for about 70%. Pond is an important part of local ecosystem. The change of ESV in the study area is significantly influenced by the main change land types.