The Valuation Of The Use Value Of Biodiversity In Songshan Nature Reserve

The valuation of the use value of biodiversity in Songshan nature reserveZhang Xiaoqiu (Environment economy)Directed by Li Zhongkui The total area of Songshan nature reserve is amounted to 2.8 ï¼… of the total area of Beijing.The categories of plant and animal in Songshan nature reserve consititute the majority .The plants and animals with soil,water and air,etc.compose the significant ecological environment,which has the most important effect at water storage,soil conservation, air purification, carbon fixation and oxygen provision,landcape optimization,species protection,production of timber,fire wood and other forestry by-product.In the study,the basic theories and methodologies of biodiversity and environmental economy are used to set up the evaluating system of biodiversity value in forestry ecological typed nature reserve of Beijing. The value of the biodiversity is divided into four categories, including direct values of extractive goods,direct values of non-extrative service,indirect values of the ecological functions and non-use values including existence value,bequest value and option value,furthermore,the methodologies for evaluating the values are put forward.By valuation,the use value of biodiversity in Songshan nature reserve every year is calculated, which includes 3,294,700 Yuan of direct values of extractive goods, 20,828,000 Yuan of direct values of non-extrative service, 23,650,900 Yuan of indirect values of the ecological functions. The annual use value of biodiversity in Songshan nature reserve is 47,773,600 Yuan,.being equal to the present value for1,003,245,600 Yuan,also the value of stock resource is 11,660,600 Yuan. The total use value is the sum of the present value and the tock resource value, i.e.,1,014,906,200 Yuan.