Analysis of the Nitrogen Loss Character on the Slopes under Simulating Rainfall Condition

LIU Quan; LI Zhan-bin; LI Peng; LI Jing; PENG Yuan-yuan; ZHANG Xiang

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Analysis of the Nitrogen Loss Character on the Slopes under Simulating Rainfall Condition

更新时间：2024-11-07

- Analysis of the Nitrogen Loss Character on the Slopes under Simulating Rainfall Condition
- Vol. 25, Issue 1, (2011)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100
  2. 绵阳师范学院,绵阳,6210002. 中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100
  3. 西安理工大学,西安,7100483. 西安理工大学,西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： S157.1
- Published：2011
- 稿件说明：
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LIU Quan, LI Zhan-bin, LI Peng, et al. Analysis of the Nitrogen Loss Character on the Slopes under Simulating Rainfall Condition[J]. 2011, 25(1).
DOI：

LIU Quan, LI Zhan-bin, LI Peng, et al. Analysis of the Nitrogen Loss Character on the Slopes under Simulating Rainfall Condition[J]. 2011, 25(1). DOI：

摘要

通过模拟降雨试验

分别研究1.0mm/min和2.0mm/min雨强条件下

不同坡面上径流过程和土壤氮素流失特征。结果表明

在1.0mm/min雨强条件下

每个产流阶段径流变化量依次为18°>28°>21°

峰值出现时间依次为21°>18°>28°

径流峰值量依次为28°>18°>21°;硝态氮淋溶与土壤侵蚀同步进行;铵态氮流失量峰值的出现是坡面顶部和下部流失量的叠加结果

随后铵态氮流失量趋于降低;在2.0mm/min雨强条件下

每个产流阶段径流变化量不同

峰值出现时间依次为18°>21°>28°

径流峰值量依次为28°>21°>18°。硝态氮流失以泥沙携带为主

大坡度地表硝态氮流失量陡然增加;短时间内坡面表层土壤流失量显著增加

造成铵态氮流失量波动变化。在两种雨强条件下

累积径流流失量依次为28°>21°>18°;硝态氮是径流中全氮流失的主要形式;在整个降雨过程

全氮流失量表现为产流初期较低

中期增大

后期降低。各形态氮素累计流失量与径流累计流失量之间存在显著的线性关系。

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Related Institution

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山东省土壤侵蚀与生态修复重点实验室

GAO Yang1,SONG Fu-peng1,2,MA Fu-liang1,ZOU Peng1(1.College of Recourses and Environment,Shandong Agricultural University,Taian,Shandong 271018,2.Shandong Province Key Laboratory of Soil Erosion and Ecological Restoration,)

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