庙岛群岛北部三岛屿乡镇海岸带生态系统服务价值评估

对庙岛群岛北部3个岛屿乡镇海岸带生态系统服务价值进行了评估．三岛屿乡镇海岸带人工林面积和服务价值依次为钦岛〉砣矶〉隍城，而服务单价则依次为隍城〉砣矶〉钦岛．农田生态系统服务价值依次为砣矶〉钦岛〉隍城．近海生态系统的服务价值以钦岛最高，砣矾次之，隍城最低．三岛屿乡镇海岸带生态系统服务价值依次为钦岛〉砣矾〉隍城，其中近海养殖生态系统的服务价值占总服务价值的99％以上．在海岸带3个子系统中，生态系统服务的单价依次为近海生态系统〉人工林生态系统〉农田生态系统。

Evaluation on Ecosystem Service Value of Coastal Zore for Three Island Towns in Northern Miaodao Archipelago

The ecosystem service values of coastal zone for 3 northern island towns in Miaodao Archipelago are evaluated. Qindao is the largest in the rank of planted forest area and service value, Tuoji the second and Huangcheng the smallest. However, the service values per hm2 of 3 island towns are in the following sequence ： Huangcheng 〉 Tuoji 〉 Qindao. The farmland area in the 3 northern island towns is very small compared with other towns of Miaodao Archipelago, which causes the extremly low value of farmland ecosystem service. The service values of adjacent sea ecosystem are in the following sequence ： Qindao 〉 Tuoji 〉 Huangcheng. The results show that the total service value of coastal ecosystem of Qindao is the greatest, that of Tuoji lies in the second, and that of Huangcheng is the least. In the whole coastal zone ecosystem, the service value of adjacent sea ecosystem accounts for the most part of the value, more than 99%. In the 3 sub-cosystem in the coastal zone, the unit service values（ per area per year）are in the following sequence：adjacent sea ecosystem 〉 forest ecosystem 〉 planted ecosystem.