基于RS的连云港海岸带生态系统服务价值估算

采用Costanza分类系统和服务单位价值,基于连云港2007年TM遥感影像以及海岸带资源综合调查,初步估算出连云港海岸带生态系统功能总价值为22.55亿美元/a,其中陆地为11.52亿美元/a,近海海域为11.03亿美元/a。该价值占全国总价值的0.4284%;而连云港市海岸带面积占全国国土(海洋+陆地)面积的0.0533%。在各种生态服务类型中养分循环、水分调节、水分供给的服务价值突出,分别为10.01,2.88和2.66亿美元/a。连云港海岸带生态系统发挥了较好的服务功能。

Estimation of Ecosystem Service Value Based on RS Technology in Coastal Zone of Lianyungang

We adopted the ecosystem classification and the unit value of relative service function put forward by Costanza,and made use of the TM remote sensing data of 2007 in Lianyungang to do our estimation. By detailed computation,we estimate that the total value of ecosystem service function in coastal zone of Lianyungang City amounts to US $2.255 billion annually,among which the value of ecosystem service function in land area is 1.152 US $ billion annually,and the value of ecosystem service function in sea area is 1.103 US $ billion annually. As regards the types of ecosystem service function,the nutrient cycle service value,moisture content conditioning service value,and moisture supply service value are US $1.001 billion,0.288 billion and 0.266 billion respectively. Since the total area of coastal zone in Lianyungang makes up 0.0533% of the total area in China and the ecosystem service function value of Lianyungang is 0.4284%. It is indicated that ecosystem of Lianyungang has relative good service function.