防护林植被体系对面源污染物氮磷的去除作用  

Study on removing nonpoint source pollutants-nitrogen and phosphorus by vegetation of protection forest system

作　　者：冯丽娟[1] 封莉[1] 孙德智[1] 张立秋[1] 

机构地区：[1]北京林业大学环境科学与工程学院,北京100083

出　　处：《哈尔滨商业大学学报（自然科学版）》2010年第5期548-550,共3页Journal of Harbin University of Commerce：Natural Sciences Edition

基　　金：国家"十一五"林业科技支撑计划项目(2006BAD03A0201)

摘　　要：针对华北土石山区面源污染物氮磷随降雨径流向密云水库的释放问题,选择潮白河流域小尺度典型防护林为研究对象,考察防护林内不同的植被类型在各生长季节对面源污染物氮磷的利用情况,确定了多种植被在生长期及非生长期对氮、磷的吸收去除效果及变化趋势.试验结果显示,不同类型的植被体内的氮磷质量分数不同,草本>落叶木本(落叶灌木、落叶乔木)>常绿乔木.从非生长期到生长期,植物氮磷质量分数增加明显;进入枯落休眠期后,氮磷质量分数逐渐下降,到下一个生长期再度增加.In this paper,the capacities of different vegetation types for removing nitrogen and phosphorus are investigated in a small scale typical protection forest around the Chaobai River basin in order to solve the problem of these nonpoint source pollutants discharging into the Mi-yun Reservoir with storm runoff.The experimental results show that the contents of nitrogen and phosphorus in various vegetations are different,for instance,herb 〉deciduous plant〉 evergreen arbor.And they observably increase in growth period,gradually decrease after that and then increase again at the beginning of next growth period.

关 键 词：面源污染 氮磷控制 防护林体系 植被 

分 类 号：X173[环境科学与工程—环境科学]