广州市城市湿地生态服务价值研究

Evaluation of the Urban Wetlands Ecosystem Service in Guangzhou

城市湿地具有较强的城市生态服务功能和较高的经济价值。本文以广州市为研究区,根据2013年Landsat卫星影像解译的湿地分布结果,利用市场价值法等多种评价方法等对广州市城市湿地生态服务价值进行评估,并分析了各评价项目在价值总量中的占比。结果表明,2013年广州市城市湿地生态服务价值受降雨量、气候条件、水历史文化和城市发展规划等因素影响,总计80.80亿元,其中环境调节功能价值最高,生命支持功能价值最低。由评价结果得,城市湿地生态服务价值评价维护了城市生态环境的稳定,产生了巨大的生态效益和经济价值,因此合理开发利用城市湿地资源,有利于城市经济的可持续发展。

Urban wetlands have great socio-ecological service functions and economical benifits. According to the wetland distribution results of Guangzhou city interpreted by Landsat image in 2013, the paper assessed the value of urban wetland ecosystem service functions and analyzed the proportion of each evaluation item based on five evaluation methods, such as Market Valuation method. The results indicated that the value could be affected by factors such as rainfall, climate conditions, water history culture. The total value was about 8080 million yuan, the highest and lowest item of which were environmental regulation and life support function, respectively. It was concluded that the evaluation of urban wetland ecosystem service value had maintained the stability of urban ecological environment and produced ecological and economic benefits. Therefore, rational development and utilization of urban wetland resources is of great significance to sustainable development of urban economy.