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| 千岛湖流域坡地利用结构对径流氮、磷流失量的影响 | |
| 引用本文： | 吕唤春,方志发,等.千岛湖流域坡地利用结构对径流氮、磷流失量的影响[J].水土保持学报,2002,16(2):91-92,132. |
| 作者姓名： | 吕唤春 方志发 |
| 作者单位： | 1. 浙江大学华家池校区环境工程系,杭州,310029 2. 淳安县环境监测站,淳安,311700 3. 杭州市环境保护科学研究所,杭州,310005 |
| 基金项目： | 浙江省科技厅重点资助项目(01103116) |
| 摘 要： | 通过对千岛湖流域典型坡地各种坡地利用方式降雨径流中总氮 (TN)、可溶氮 (DN)、总磷 (TP)和可溶磷(DP)浓度的监测 ,发现不同坡地利用方式中总氮和总磷浓度变异较大 ,总体说来 ,甘薯地和园地等有人工耕种的坡地流失浓度最大 ,草地和林地等受人工影响干扰少的坡地流失浓度相对较少 ,陡坡林地流失浓度大于缓坡林地。平均 DN/ TN值和 DP/ TP值变化不大 :分别为 0 .4 5和 0 .2 2左右。在不同利用方式下 ,日降雨量与氮、磷浓度的相关性均达到 95 %的显著性水平 |
| 关 键 词： | 坡地利用结构 千岛湖流域 径流 氮流失 磷流失 |
| 文章编号： | 1009-2242(2002)02-0091-02 |
Effect of Sloping Land Use Pattern on Nitrogen and Phosphorus Loss in Qiandaohu Watershed |
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| Abstract: | The concentrations of total nitrogen, dissoluble nitrogen, total phosphorus and dissoluble phosphorus in surface runoff were monitored in different sloping land within the Qiandaohu watershed. The results show that the concentrations of nitrogen and phosphorus in surface runoff varied strongly, and the average concentrations in cultivated slope land were high than that in uncultivated slope land. The average ratios of DN/TP and DP/TP had no contrast in different slope land, and the ratios were 0.45 and 0.22. The correlation between dairy rainfall and N and P concentrations under different slope land use pattern was very significant. |
| Keywords: | slope land use patterns Qiandaohu watershed runoff nitrogen loss phosphorus loss |
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