海口市湿地生态功能价值评估及其对气候变化的响应分析

Evaluation of ecological function value of urban wetland in Haikou City and its response to climate change

基于多光谱遥感数据,利用价值当量因子法对2011年至2018年海口市湿地生态系统服务功能价值评估及其对气候变化的响应进行分析研究。结果表明:1)海口市2011年至2018年间湿地ESV变化呈现出先增大后减小继而又缓慢增长的趋势;2)海口市2011年至2018年湿地ESV总体均值为59.48亿元,各项服务功能价值中,调节服务价值最高,供给服务次之,文化服务价值最低,其中水文调节、水资源供给和净化环境功能是海口市湿地的核心功能,而生物多样性和气候调节等功能在湿地生态平衡也占有重要比例;3)海口市湿地ESV总体变化与风速呈负相关,而与降水、气温等其它气象因子间均为不相关;4)海口市湿地供给服务价值、调节服务价值均与风速呈负相关,湿地支持服务价值与降水量为正相关,而湿地文化服务价值与各气候因子间均不相关。

Based on multispectral remote sensing data,the value equivalent factor method is used to analyze and study the functional value assessment of wetland ecosystem services in Haikou City from 2011 to 2018 and its response to climate change.The results show that:1)The change of wetland ESV in Haikou City from 2011 to2018 shows the trend of increasing first,then decreasing and then slowly growing;2)The overall mean of the wetland ESV in Haikou City from 2011 to 2018 is 5.948 billion Yuan,the value of various service functions is:adjustment services,supply services,support services,cultural services,of which hydrologic regulation,water resources supply and purification of the environment function is the core function of Haikou Wetlands,and biodiversity and climate regulation and other functions in the wetland ecological balance also occupies an important proportion;3)The total value of wetland ecosystem service in Haikou City has a certain negative correlation with wind speed,and there is no significant correlation with precipitation,temperature and other meteorological factors;4)The supply service value and regulation service value of Haikou wetland have negative correlation with wind speed,the value of wetland support service and precipitation have a positive correlation,and the value of wetland cultural service is not significantly correlated with the climate factors.