桑沟湾海洋生态系统的服务价值

对我国黄海内的典型集约化浅海养殖区域——桑沟湾的生态系统服务价值进行了评估.结果表明:2003年桑沟湾的总服务价值为6.07×108元,平均单位海域面积的服务价值为4.24×106元.km-2.在总服务价值中,供给服务、调节服务和文化服务分别占51.29%、17.34%和31.37%.在所评估的8项主要和次要生态系统服务中,食品供给服务价值最高(50.45%),其次是旅游和娱乐服务价值(29.89%)及气候调节服务价值(9.18%),最低的是有害生物与疾病的生物调节与控制服务价值(0.0017%).桑沟湾的养殖活动对当地社会经济、环境调节与社会文化均有较大贡献.海水养殖活动,特别是大型藻类的养殖对于维持和提升海洋生态系统的服务具有重要意义.

Values of marine ecosystem services in Sanggou Bay

A valuation study was conducted in Sanggou Bay, a typical and intensive coastal aquaculture area in China Yellow Sea. The results showed that the total value of ecosystem services (VES) in Sanggou Bay was 6.07 x 10(8) Yen in 2003, with an average unit VES being 4.24 x 10(6) Yen x km(-2). Within the total VES, the provision services, regulation services, and culture services accounted for 51.29%, 17.34%, and 31.37%, respectively. Among the eight primary and secondary services valuated in Sanggou Bay, food provision services held the highest value (50.45%), followed by tourism and entertainment services (29.89%) and climate regulation services (9.18%). Harmful organism and disease control services have the lowest value (0.0017%). The aquaculture activities had greater contributions to the local social economy, environmental regulation, and social culture. Aquaculture activities, especially macro-algae farming, are of significance in maintaining and enhancing the ecosystem services.