北京延庆森林资源现状及可持续发展对策

应用延庆县1998—2002年森林资源二类调查资料,系统分析了延庆县森林资源和生态环境现状和存在的问题。结果表明,防护林面积和蓄积量分别为47.13%、89.41%,用材林仅为0.40%、0.29%,林种组成不合理。林分结构简单,纯林、混交林比重严重失衡。中、幼林面积比重高达88.2%,抚育任务重。从林分起源来看,天然、次生林面积、蓄积量最大,人工林次之,飞播造林最小。在可持续发展林业理论指导指导下,按照分类经营的原则,研究从技术层面上提出了延庆县森林资源和生态环境恢复与保护对策。

Status and Sustainable Developmental Countermeasures of the Forest Resources in Yanqing County

Based on the data of the forest management inventory from 1998 to 2002 in Yanqing, Beijing, the forest resources were given and issues related to forest resource management were discussed. The results were as followed. The ratio of the area and volue of protective forest were 47.13% and 89.41% respectively, while those of the plantation were 0.40% and 0.29%. The area of mixed forest overweight that of pure stands significantly and forest structure was too simple. Also the ratio of the area of middle-young stands was 88.2% and so too much work of forest tending was needed. According to the area of the origin of forests, the original and secondary forests were greatest, followed by plantation forests and aerial forests. As a result, according to the theory such as the sustainable forestry development and the classified forest management, the measures and suggestions were put forward in this paper.