论文部分内容阅读
针对北京市房山区局部林地存在Ｃｄ污染问题，采用以木本植物为主体的林业工程措施治理Ｃｄ污染，实验证明是完全可行的。本实验对房山区试验示范林中３１个树种对Ｃｄ的吸收及分布进行了比较，同时选择该区１０个常见绿化树种，比较了在不同立地条件、不同污染环境下对Ｃｄ的吸收、蓄积能力。根据这些树种对Ｃｄ的蓄积能力和累积效率大小，在房山区诸多绿化树种中，当选馒头柳、垂柳、臭椿、毛白杨、国槐等为治理Ｃｄ污染的量佳树种。
In order to solve the problem of Cd pollution in the local forest land in Fangshan District, Beijing, the paper takes the wood-based forestry engineering measures to control Cd pollution and the experiment proves that it is feasible. In this experiment, the absorption and distribution of Cd in 31 tree species in the experimental demonstration forest in Fangshan District were compared, and 10 common greening species in this area were selected to compare the absorption and accumulation capacity of Cd under different environmental conditions . According to the accumulation capacity and accumulative efficiency of Cd in these tree species, among the many greening tree species in Fangshan District, the best tree species for controlling Cd pollution is selected steamed bread willow, weeping willow, Ailanthus altissima, Populus tomentosa and Sophora japonica.