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生态系统服务价值的评估对于研究人员、政策制定者和公众都有重大意义。但对于水产养殖系统而言,大多关注其食物供给价值,而忽视了其他生态系统服务。本文采用市场价值法、有效成本法、旅行成本法和条件价值评估法分别评估池塘常规鱼类养殖生态系统的食物供给价值、碳固定价值、释放氧气价值、调节气温价值、娱乐休憩价值和文化服务价值(存在价值)。结果表明,常规鱼类池塘养殖生态系统服务总价值为每年47.50万元/hm2,其中食物供给价值占7.2%,碳固定价值占5.4%,释放氧气价值0.7%,气温调节价值占38.4%,娱乐休憩价值占43.2%,文化服务价值占5.2%。池塘养殖生态系统的非市场价值部分远超养殖水产品市场价值,表明池塘养殖的生态服务价值对人类社会的贡献不可忽视。分析表明,由于生态系统服务研究范式的不统一,评估方法的局限性以及水产养殖生态系统中人类影响的复杂性,该研究还有待继续深入。
Assessing the value of ecosystem services is of great importance to researchers, policymakers and the general public. However, for aquaculture systems, most focus on the value of their food supply, neglecting other ecosystem services. In this paper, the value of food supply, the fixed value of carbon, the value of oxygen, the value of air temperature, the value of recreational recreation and the cultural services were evaluated respectively by the methods of market value, effective cost, travel cost and conditional value assessment Value (Existence Value). The results showed that the total value of conventional fish pond ecosystem services was 4750 yuan / hm2, including 7.2% of food supply value, 5.4% of carbon fixed value, 0.7% of oxygen release value, 38.4% of air temperature adjustment value, entertainment Recreation value accounted for 43.2%, cultural services accounted for 5.2%. The non-market value of the pond aquaculture ecosystem far exceeds the market value of aquaculture aquaculture products, indicating that the contribution of pond ecosystem services to human beings can not be ignored. The analysis shows that due to the inconsistency of research paradigms in ecosystem services, the limitations of assessment methods and the complexity of human impacts in aquaculture ecosystems, the study needs to be further studied.