The comprehensive scientific investigation was conducted and the historical evolution, geographical location, main protected objects, functional zoning, vegetation, animal and plant resources, forest resources, land use, landscape resources were studied on Dalongtan Water Source Forest Nature Reserve in Nanjian. The protection value of the reserve was analyzed from the aspects of diversity, rarity, naturalness, typicality, vulnerability and ecological location importance. According to the results of ecological benefit evaluation, the forest vegetation in the reserve which played a “sponge” role in the water storage maintained the water quality of the reservoir, preserved 27 300 t of soil, released 1 841.3 t of oxygen, absorbed 2 550.6 t of carbon dioxide, reduced 8 865.7 t of dust every year, protected regional biodiversity and maintained the balance of forest ecosystem. According to the results of the community household survey, the people′s sense of existence, gain and happiness was continuously enhanced, the community economy was becoming more and more prosperous, and the social and economic benefits were remarkable. |