厦门滨海自然湿地生态系统服务价值的变化研究

根据厦门1986年和2004年遥感图像湿地类型解译数据,分析了厦门滨海自然湿地在18 a间的动态变化,并采用Costanza等人对全球生态系统服务功能的单位价值研究成果,对厦门滨海自然湿地的生态服务价值及其变化进行了初步估算。研究结果表明,在过去的18 a间,厦门滨海自然湿地面积呈较明显下降趋势,湿地生态系统服务功能总价值从1986年的183 100.804万元下降到2004年的161 296.066万元,损失幅度为11.9%。在各类型的生态系统提供的生态服务功能中,滩涂和浅海湿地的生态服务价值占到了94%以上,而红树林和河流的服务价值下降幅度最大。对于不同的生态系统服务功能而言,废物处理、水分调节和干扰调节服务功能价值量损失最突出。

Study on the Change of Service Value of Natural Coastal Wetlands in Xiamen City

In this paper,the change of coastal natural wetlands among 18 years in Xiamen City was analyzed by using the interpreted data of the Landsat TM images of 1986 and 2004.Preliminary assessment on the ecosystem service value and its impact was achieved by using Costanza's method of evaluating the world's ecosystem service.The results indicated the area of natural coastal wetlands decreased obviously in the past 18 years.The total ecosystem service value of natural coastal wetlands had reduced from 183 100.804×10~4 RMB(1986) to 161 296.066×10~4 RMB(2004) with the span of 11.9%.Among the different types of natural coastalwetlands,shallow seas and silt beaches supplied about more than 94% of the total ecosystem service value,and the span of service value of mangroves and rivers dropped dramatically.Among the different kinds of ecosystem service,the lossvalue of detoxification and decomposition of wastes,water regulation and mitigation of storm tide were most remarkable.