南四湖湿地生态系统服务功能价值初步研究

Valuation of Ecosystem Services in Nansi Lake Wetland

在大量详实基础数据和实地调查的基础上,应用市场价值法、影子工程法、替代费用法等方法,对南四湖湿地的物质生产、大气调节、涵养水源、调蓄洪水、净化水质、保护土壤、生物栖息地、休闲娱乐、文化科研等生态系统服务功能的生态经济价值进行了评价。结果表明:南四湖湿地服务功能总价值为2.21×1010元.a-1。其中,涵养水源价值最大,达到9.71×109元.a-1;其次是调蓄洪水价值,为6.45×109元.a-1;生物栖息地功能价值最小,为2.47×108元.a-1。因此,在开发和利用南四湖湿地资源时要科学合理的规划,避免影响湿地生态系统服务功能的发挥。

Based on field investigation and statistic data available, the value of the ecosystem services of Nansi Lake wetland was evaluated for the first time by the methods of market value, shadow price, substitution expense, etc. The main services of ecosystems include material production, atmospheric regulation, water conservancy, flood control, water purification, wild species habitat, recreation service, culture and scientific research. The results showed that the total value of the ecosystem services of the wetland was about 2.21× 10^10 yuan per year. Among these services, the water conservancy had the maximal value of 9.71 × 10^9 yuan per year, followed by flood regulation （ 6.45 × 10^9 yuan per year）. The wild species habi- tat had the minimal value of 2.47× 10^8 yuan per year. Therefore, the decision-makers should consider the trade-off of the wetland ecosystem services of the wetland to reach the balance of the ecology and economic development of the region while selecting the developmental options.