...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Runoff-driven nitrogen and phosphorus dynamics of substrate material for rocky slope eco-engineering
【24h】

Runoff-driven nitrogen and phosphorus dynamics of substrate material for rocky slope eco-engineering

机译：岩质边坡生态工程基质材料的径流驱动氮磷动力学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The degradation of eco-engineering associated with an increase in runoff and erosion is a severe problem in rocky slope protection. In the process, losses of nitrogen (N) and phosphorus (P), both essential nutrients for plant, increased in the substrate material. This study investigated the runoff-driven redistribution and losses of dissolved and particulate-bound N and P in the substrate material during stimulated rainfall events, and in this study the natural soil was treated as control. Runoff-driven nutrient dynamics were monitored in the stimulated rainfall experiments. The results showed that: (T) there was a closed relationship between nutrient losses and runoff. (2) Particulate-bound forms of N and P were responsible for the losses of N and P during runoff events. (3) In a 9 months' timescale, total nitrogen losses and total phosphorus losses were 5.3 and 1.5 g m~2 in the substrate material, with particulate-bound nitrogen making up 76% of total nitrogen losses, and particulate-bound phosphorus making up 85% of total phosphorus losses. Cumulative loss rates of total nitrogen and total phosphorus were 2% and 1.02% respectively. (4) For all the events monitored, the silt and clay were the primary forms of soil loss, accounting for approximately 70%. Overall, the progressive degradation of rocky slope eco-engineering has the potential to be affected by N and P cycling significantly through an increase in nutrient redistribution and losses in runoff. These results suggested that the output of N and P in the substrate material may greatly exceed the amount of input during high-magnitude rainfall events. The results could also promote polyacrylamide application in the rocky slope eco-engineering to reduce the runoff losses of particulate-bound forms of N and P.
机译：与径流和侵蚀增加相关的生态工程退化是岩石护坡中的一个严重问题。在此过程中，底物材料中增加的氮（N）和磷（P）损失都是植物必需的养分。这项研究调查了受激降雨事件过程中径流驱动的再分配以及基质材料中溶解的和与颗粒结合的N和P的损失，本研究将天然土壤作为对照。在受激降雨实验中监测了径流驱动的养分动态。结果表明：（T）养分流失与径流之间存在密切关系。 （2）径流事件中N和P的颗粒结合形式是N和P损失的原因。 （3）在9个月的时间范围内，基质材料中的总氮损失和总磷损失分别为5.3和1.5 gm〜2，颗粒结合的氮占总氮损失的76％，颗粒结合的磷占总氮的76％。总磷损失的85％。总氮和总磷的累积损失率分别为2％和1.02％。 （4）在所有监测事件中，淤泥和黏土是土壤流失的主要形式，约占70％。总体而言，通过增加养分分配和径流损失，岩石边坡生态工程的逐步退化有可能受到氮磷循环的显着影响。这些结果表明，在高强度降雨事件中，基质材料中N和P的输出可能大大超过输入量。该结果还可以促进聚丙烯酰胺在岩质边坡生态工程中的应用，以减少颗粒结合形式的N和P的径流损失。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号