Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau

CHEN Lei; LI Zhan-bin; LI Peng; MU Jun; JIA Lian-lian

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Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau

更新时间：2024-11-07

- Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  1. 西安理工大学西北水资源与环境生态教育部重点实验室,陕西,西安,710048
  2. 中科院水利部水土保持研究所,陕西杨凌7121002. 西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安,7100483. 西安市环境保护科学院,陕西,西安,710002
- 作者简介：
- 基金信息：
- DOI：
  CLC： S157.1
- Published：2011
- 稿件说明：
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CHEN Lei, LI Zhan-bin, LI Peng, et al. Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau[J]. 2011, 25(3).
DOI：

CHEN Lei, LI Zhan-bin, LI Peng, et al. Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau[J]. 2011, 25(3). DOI：

摘要

利用野外模拟人工降雨试验

对人为加速侵蚀下耕地、草地和林地的水土与养分流失进行耦合研究。结果表明:人为加速侵蚀后养分随径流和泥沙的迁移

导致土壤肥力下降

其中泥沙结合态是养分流失的主要途径。耕地翻耕后加速土壤侵蚀

除产流量减少22.4%外

侵蚀速率和产沙量分别增加了27.1%和27.3%;总有机碳、总氮和总磷流失量分别增加104.5%

42.5%和59.5%。草地和林地的蓄水保土效果显著

开垦后侵蚀速率分别增加了188.9%和10 225.1%

产沙量分别增加了190.6%和9 370.0%

产流量分别增加了44.9%和85.3%;流失总有机碳、氮和磷量分别增加104.1%

69.9%和18.2%。林地去除枯枝落叶层后总有机碳、总氮、总磷流失量分别是自然状态下的6.1

4.7

15.1倍

且养分流失以可溶态养分为主;而开垦后流失总量分别是自然状态下的18.1

8.6

27.2倍

且养分流失以泥沙结合态为主。

Abstract

The coupling effect on erosion and nutrient lost of arable

grassland and woodland

were studied based on different land-use patterns

with simulated rainfall equipment.The results showed that the runoff and sediment caused the soil became less fertile.The nutrient in sediment was higher than that in run-off

which was the main ways of nutrient losses.Man-made accelerated erosion caused by arable land tillage

soil erosion rate(SER) and sediment yield(SY) increased by 27.1% and 27.3%

but runoff yield(RY) decreas...

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