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| 横垄耕作的面源污染截留效应研究 | |
| 引用本文： | 杨育红,阎百兴,严登华.横垄耕作的面源污染截留效应研究[J].中国水土保持,2012(9):46-47. |
| 作者姓名： | 杨育红 阎百兴 严登华 |
| 作者单位： | 1. 华北水利水电学院水利学院,河南郑州,450011 2. 中国科学院东北地理与农业生态研究所,吉林长春,130012 3. 中国水利水电科学研究院水资源研究所,北京,100038 |
| 基金项目： | 国家“十二五”科技支撑计划课题（2012BACl9803）;华北水利水电学院高层次人才科研启动项目（001289） |
| 摘 要： | 为了解横垄耕作的面源污染截留效应,选取吉林省长春市莫家沟小流域横垄耕作坡耕地为研究区,应用210Pbex核素示踪技术得到研究区土壤侵蚀模数为2 268 t/(km2.a),吸附态氮、磷流失负荷分别为4 889、2 022 kg/a;运用RU-SLE2.0模型,模拟在同等立地条件下顺坡耕作土壤侵蚀模数约为6 200 t/(km2.a)。对比结果表明:横垄耕作较顺坡耕作可减少约63%的土壤流失量及随土壤流失的吸附态氮磷负荷。 |
| 关 键 词： | 核素示踪技术 RUSLE2.0模型 吸附态氮磷 横垄耕作 顺坡耕作 面源污染 东北地区 |
Interception Effects of Non-Point Source Pollution of Contour Farming |
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| YANG Yu-hong,YAN Bai-xing,YAN Deng-hua.Interception Effects of Non-Point Source Pollution of Contour Farming[J].Soil and Water Conservation In China,2012(9):46-47. | |
| Authors: | YANG Yu-hong YAN Bai-xing YAN Deng-hua |
| Institution: | 1.College of Water Resources,North China University of Water Resources and Electric Power,Zhengzhou,Henan 450011,China;2.Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun,Jilin 130012,China;3.Water Resources Department,China Institute of Water Resources and Hydropower Research,Beijing 100038,China) |
| Abstract: | In order to understand the interception effects of non-point source pollution of contour farming,the paper selected Mojiagou Small Watershed in Changchun City of Jilin Province as a studied area and obtained the soil erosion modulus as 2 268 t/(km2·a) and the loss load of adsorbed nitrogen and phosphorus as 4 889 kg/a and 2 022 kg/a respectively of the area by using 210Pbex nuclide tracing technique.The soil erosion modulus of downslope tillage simulated with the same site factors was 6 200 t/(km2·a) by using RUSLE 2.0 model.The outcomes show that comparing with downslope tillage,the soil loss and the loss load of adsorbed nitrogen and phosphorus of contour farming can be reduced by 63%. |
| Keywords: | nuclide tracing technique RUSLE 2 0 model adsorbed nitrogen/phosphorus contour farming downslope tillage non-point source pollution northeast China |
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