花江喀斯特峡谷区顶坛花椒林生态系统服务功能价值评估

运用生态系统服务功能的价值评价理论和方法对花江喀斯特峡谷区顶坛花椒林生态系统的林产品、水源涵养、固土保肥等服务功能进行了初步的量化评估。结果表明:花江喀斯特典型峡谷区顶坛花椒林服务功能总价值为9.69×104万元,其中直接经济价值1.41×104万元,间接经济价值8.28×104万元,间接经济价值是直接经济价值的5.87倍。在间接经济价值构成中,以年固土保肥的经济价值最大,达到8.09×104万元;其次是年固碳释氧总价值为1.7×103万元。评估结果说明顶坛花椒林生态系统在维系和促进当地社会经济发展及改善喀斯特峡谷生态环境中具有巨大的作用。

Value evaluation on the eco-services function of Zanthoxylum planispinum var. dingtanensi woods in Huajiang Karst Valley

In this paper,the eco-services function of Zanthoxylum planispinum var.dingtanensi woods in Huajiang Karst Valley are studied by means of interrelated theory and methods.The results indicate that the total annual services value of Zanthoxylum planispinum var.dingtanensi woods in Huajiang Karst Valley is up to 96.9 billion yuan RMB,including 14.1 billion yuan RMB direct value and 82.8 billion yuan RMB indirect values,indirect values is 5.87 times more than direct values.In the three indirect service items,the order of indirect value is below： soil and nutrient conservation C fixation and O2 release water storage,the evaluation date shows that Zanthoxylum planispinum var.dingtanensi woods ecosystem plays a significant role in the environment protection in Huajiang karst valley.