关键词: 六道沟流域, 六道沟流域, 土壤持水特征, 土壤水分有效性

Abstract:

Forest plays an important role as the main body of land ecosystem in global ecosystem. The research on forest ecosystem services evaluation has been the focus of discussion. In this paper, it was assessed the direct and indirect ecological service values, a case study of forest ecosystem in Jiaozi Mountain Natural Reserve, using shadow engineering method, opportunity cost method, market value method and other methods. The results prove that the ecosystem services value of the natural reserve is 3.67×108 yuan/a, economic value of per unit area is 22 274.65 yuan/( hm2?a), direct value is 895.17×104 yuan/a, accounting for only 2.44% of the total, indirect value is over 3.58×108 yuan/a, the ratio of direct value to indirect value is 1:39.95, the order of indirect value of ecosystem service is: erosion control > water conservation > provisioning of habit > air quality purifying > C fixation and O2 release > scientific and culture. Despite the Jiaozi Mountain Natural Reserve takes only 3.09% in total area of the Dongchuan District and Luquan County, the ecosystem services value accounts for 6.60% of total GDP in Dongchuan District and Luquan County in 2008. For each local individual, the available ecosystem services value can reach 470.69 yuan/a. In conclusion, the Jiaozi Mountain Natural Reserve plays a decisive role in maintaining the sustainable development for the local society.