密云水库集水区水源保护林分类及其经营

根据北京市森林资源调查资料，以发挥森林的生态功能、生产功能和实现林业可持续发展为原则，将密云水库集水区水源保护林划分为生态型水源保护林、生态经济型水源保护林、经济生态型水源保护林3个森林类型和18种亚型。在此基础上依据密云水库水源保护资源现状、森林水文效益试验研究和当地经济发展等20个指标，提出对不同类型水源保护林资源现状、森林水文效益试验研究和当地经济发展等20个指标，提出了对不同类型水源保护林功能要求的定性评价标准为：优、良、中、差4个等级。最后提出了各类型水源保护林合理利用和管理的措施和建议，以期为有关决策部门和制定密云水库集水区水源保护林建设规划提供科学依据。

Classification and Management of Water Protection Forest in Miyun Reservoir Watershed

According to the forest inventory data of Beijing, in compliance with the principle of developing the ecological function, productive function and realizing forestry sustainable development, the water protection forest in Miyun reservoir watershed was classified into three types of ecological, eco economic and eco ecological. Besides, 18 subtypes were worked out. Adopting 20 indexes such as the present status of forest resources, research of hydrological effect and the development of local economy, the qualitative evaluation standard of each type of water protection forest was established, namely excellent, good, passable and not receivable. Some suggestions were put forward for the reasonable utilization and management of each type of water protection forests.