Effects of Two Typical Plant Measures on Runoff and Sediment Reduction in a Cinnamon Soil Region in Northern Beijing

WANG Bao1; CHENG Jinhua1; WANG Wenkai2; MA Junming1

doi:10.13870/j.cnki.stbcxb.2017.03.010

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Effects of Two Typical Plant Measures on Runoff and Sediment Reduction in a Cinnamon Soil Region in Northern Beijing

更新时间：2025-03-12

- Effects of Two Typical Plant Measures on Runoff and Sediment Reduction in a Cinnamon Soil Region in Northern Beijing
- Vol. 31, Issue 3, Pages: 56-61(2017)
- 作者机构：
  
  1. 北京林业大学水土保持学院,北京,100083
  2. 北京市延庆区水土保持工作站,北京,102100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.03.010
  CLC： S157.1
- Published：2017
- 稿件说明：
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WANG Bao1, CHENG Jinhua1, WANG Wenkai2, et al. Effects of Two Typical Plant Measures on Runoff and Sediment Reduction in a Cinnamon Soil Region in Northern Beijing[J]. 2017, 31(3): 56-61.
DOI：

WANG Bao1, CHENG Jinhua1, WANG Wenkai2, et al. Effects of Two Typical Plant Measures on Runoff and Sediment Reduction in a Cinnamon Soil Region in Northern Beijing[J]. 2017, 31(3): 56-61. DOI： 10.13870/j.cnki.stbcxb.2017.03.010.

摘要

为了对比沙打旺和紫花苜蓿的减流减沙效果，设置3种流量（1，2，3 m3/h），5种植被覆盖度（100%，75%，50%，25%和0），利用潜水泵进行径流冲刷试验。结果表明：（1）种植沙打旺和紫花苜蓿的坡面入渗系数大于对照组，径流量及产沙量小于对照组，说明沙打旺和紫花苜蓿均具有减流减沙效果。（2）沙打旺的减流减沙效果优于紫花苜蓿。以流量为3 m3/h时为例，种植紫花苜蓿、沙打旺的坡面入渗系数分别比对照组增加了5.8%和45.3%；径流总量分别比对照组减少了3.7%和11.2%；对照组产沙量分别是种植紫花苜蓿和沙打旺的坡面产沙量的6.40倍和9.19倍；沙打旺组坡面入渗效果、减沙效益均优于紫花苜蓿组，而紫花苜蓿组的径流量稳定值、径流总量优于沙打旺组。（3）植被的减流减沙效益存在临界现象。50%～75%是本地区草本植物减沙效益的临界盖度。

Abstract

In order to compare the effects of Astragalus adsurgens Pall. and Medicago sativa L. on reducing runoff and sediment

we set up three rates of flow (1 m3/h

2 m3/h

and 3 m3/h)

and five kinds of vegetation coverage (100%

75%

50%

25%

and 0%). The submersible pump was used to carry out the runoff scouring experiment. The results show that: (1) The permeability coefficient of the slopes on which A. adsurgens and M. sativa were planted was larger than that of the control group

but the runoff and sediment of the slopes on which A. adsurgens and M. sativa were planted was less than that of the control group

indicating that A. adsurgens and M. sativa having effects on runoff and sediment reduction. (2) The effects of A. adsurgens on runoff and sediment reduction were better than that of M. sativa in the northern mountain area of Beijing. For example

compared with the control group

when the flow rate was 3 m3/h

the permeability coefficient of the slopes on which A. adsurgens and M. sativa were planted was increased by 5.8% and 45.3%

respectively. Total runoff of the slopes on which A. adsurgens and M. sativa were planted was less than that of the control group

being decreased by 3.7% and 11.2%

respectively. Sediment yield of the control group was 6.40 and 9.19 times the size of that of the slopes on which A. adsurgens and M. sativa were planted. The effects of A. adsurgens on slope infiltration and sediment reduction were better than those of M. sativa. (3) There was a critical phenomenon in the effect of vegetation on sediment reduction. The critical coverage of herbaceous plants for sediment reduction in this region was 50%-75%.

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