| 刘兴誉,杨方社,李怀恩,王浩,马艺坤,张鸿敏,韩琛.植被过滤带对地表径流中泥沙和杀虫剂的净化效果[J].农业环境科学学报,2017,36(5):974-980. |
| 植被过滤带对地表径流中泥沙和杀虫剂的净化效果 |
| Clarification efficiency of vegetative filter strips on sediment and pesticide in surface runoff |
| 投稿时间：2016-11-27 |
| DOI：10.11654/jaes.2016-1507 |
| 中文关键词: 植被过滤带 泥沙 高效氯氟氰菊酯 拦截效率 |
| 英文关键词: vegetative filter strips sediment Lambda-cyhalothrin interception efficiency |
| 基金项目:国家自然科学基金项目（51279163）；西北旱区生态水利工程国家重点实验室培育基地项目（西安理工大学）（2016KFKT-4） |
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| 中文摘要: |
| 通过含沙水流试验，测定了植被过滤带对泥沙、高效氯氟氰菊酯的净化效果。结果表明：入流流量、植被条件是影响植被过滤带拦沙效果的重要因素；高效氯氟氰菊酯的入流浓度越高，植被过滤带断面测定浓度沿程降低越快，当入流浓度分别为0.3、0.6、0.9 mg·L-1时，草地过滤带对高效氯氟氰菊酯的拦截率平均达到61%、71%、75%，灌草地过滤带对高效氯氟氰菊酯的拦截率平均达到52%、69%、74%；入流流量越大，植被过滤带监测断面上的高效氯氟氰菊酯浓度沿程降低越慢，当流量分别为0.87、3.98、7.8 L·s-1时，草地过滤带对高效氯氟氰菊酯的拦截率平均达到61%、50%、33%，灌草地过滤带对高效氯氟氰菊酯的拦截率平均达到52%、44%、40%。研究证实，植被过滤带能有效拦截泥沙、高效氯氟氰菊酯，对农业面源污染具有较好的防治效果。 |
| 英文摘要: |
| In this study, via the field flow experiment, the interception efficiency of Vegetative filter strips (VFS) on sediment and Lambda-cyhalothrin was measured. The results showed that the inflow discharge and vegetation conditions are important influencing factors for sediment retention. The higher the inflow concentration of Lambda-cyhalothrin is, the more quickly the VFS's sectional concentrations decrease with the length. When the inflow concentrations are 0.3, 0.6, 0.9 mg·L-1, the interception rate of the herb VFS on Lambda-cyhalothrin are 61%, 71%, 75%, respectively, and the interception rate of the shrub-herb VFS on Lambda-cyhalothrin are 52%, 69%, 74%, respectively. The greater the inflow discharge is, the lower the VFS's sectional concentrations decrease lengthwise. When the inflow discharges are 0.87, 3.98, 7.8 L·s-1, the interception rate of the herb VFS on Lambda-cyhalothrin are 61%, 50%, 33%, respectively, and the interception rate of the shrub-herb VFS on Lambda-cyhalothrin are 52%, 44%, 40%, respectively. The study evidenced that VFS can effectively intercept sediment and Lambda-cyhalothrin, which has better prevention effects on agricultural non-point source pollution. |
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