西安市生态系统服务价值及其变化研究

Study on the Ecosystem Service Values and Its Change of Xi'an City

在阐释生态系统的固碳释氧、保持土壤、涵养水源、食物生产生态功能的基础上,根据西安市生态系统类型特点,定量评价西安市2000年及2010年西安市固碳释氧、保持土壤、涵养水源及食物生产的生态系统服务价值及其变化情况。结果表明,2000年西安市各项生态系统服务功能总价值为220.81亿元,2010年增长至238.70亿元。10年间涵养水源生态系统服务价值量下降了57.04%,应注重对秦岭北麓山地森林生态系统及西安市水域面积的严格保护。

According to ecosystem types and characteristics of Xihn City, this paper calculated the regional ecosystem service function value and its changg in 2000 and 2010 based on the introduction of the function of carbon fixation and oxygen release, soil conservation , water source conservation and food production. The results showed that the total value of ecosystem service function of Xi＇an City was 22.08 billion in 2000 and 23.87 bilhon in 2010, with a big drop of the regional ecosystem service function value of water source conservation which was 57.04 percent. It was suggested that forest ecosystem of the north slope of Qinling Mountains and water area of Xi＇ an City should be strictly protected.