基于去重复性分析的广东省滨海湿地生态系统服务价值估算

Coastal wetland ecosystem evaluation in Guangdong Province by eliminating the double counting

为了深入了解滨海湿地服务价值构成及特点,以广东省滨海湿地生态系统为例,筛选了11项去重复性的最终服务和评价指标体系,选择市场价值法、替代成本法和实际调查法等适应度较高价值评价方法,从而科学评估广东省滨海湿地生态系统的总服务价值,并为湿地生态系统的保护与修复提供理论基础。结果表明:2013年广东省滨海湿地生态系统最终服务总价值为664.074×10~8元,单位面积服务价值为8.147元·m^(-2)·a^(-1)。在所评价的11项最终服务中,食物供给价值最大,占总服务价值的73.48%,其后依次为休闲旅游价值、风能供电价值、固碳价值、水质净化价值、航运价值、大气调节价值、供水价值、消浪护岸价值、原材料供给价值和科研教育价值。广东省滨海湿地不仅发挥显著的直接经济效益,还兼具巨大的生态效益和社会效益,同时在维系广东乃至华南地区海岸带生态安全及国民经济发展方面发挥不可替代的重要作用。

Ecosystem service value assessment sarevital in ecological economics as well as environmental eco-nomics, and coastal wet lands are an important component of an ecosystem. To better understand the compo-nents and characteristics of coastal wetlands and consequently evaluate its finial ecosystem service values, the coastal wetlands in Guangdong Province was investigated and the 11 kinds of final services with eliminating the double counting were determined. The 11 kinds of final services in Guangdong Province were selected based on literature and field survey, and which were used to calculate the total value for the coastal wetlands in the study area. Subsequently, the evaluation system and methods of the final services were established and select-ed, such as market method, replacement cost method, field survey method, and other environmental economic evaluation methods. Results showed that the total value of coastal wetland ecosystem services in Guangdong Province in 2013 was 664.1 x108 RMB yuan with an average value of 8.1 RMB yuan·m^-2·a^-1. The greatest a-mong the indexes was the food supply service with 488.0x108 RMB yuan, accounting for 73.48% of the total value. The second largest index was recreation （124.1×10^8 RMB yuan, 18.7%） followed by wind power supply （16.7×10^8 RMB yuan, 2.52%）, carbon sequestration （11.4×10^8 RMB yuan, 1.71%）, water purification （11.3× 10^8 RMB yuan, 1.70%）, ocean shipping （4.3×10^8 RMB yuan, 0.64%）, climate regulation （3.6×10^8 RMB yuan, 0.54%）, water supply （2.3×10^8 RMB yuan, 0.35%）, wave reduction and coastal protection （1.4×10^8 RMB yuan ,0.21%）,raw material supply （1.0×10^8 RMB yuan ,0.15%）,and scientific research （0.1×10^8 RMB yuan,0.01% ） . This indicated that coastal wetlands could not only have enormous economic , ecological, and social benefits , but could also play an irreplaceable role in the preservation of coastale cological security and the de -velopment of the national economy in Guangdong Province oreven in South China . [Ch , 1 fig . 4 tab . 29 ref.]