裸露砒砂岩区坡面侵蚀过程中地表粗糙度与水力侵蚀特征参数的关系

董晓宇; 秦富仓; 李龙; 孙成; 李艳; 索凤珍

doi:10.13870/j.cnki.stbcxb.2022.02.004

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裸露砒砂岩区坡面侵蚀过程中地表粗糙度与水力侵蚀特征参数的关系

更新时间：2024-11-07

- 裸露砒砂岩区坡面侵蚀过程中地表粗糙度与水力侵蚀特征参数的关系
- Relationship Between Surface Roughness and Hydraulic Erosion Characteristic Parameters During Slope Erosion in Exposed Pisha Sandstone Area
- 水土保持学报 2022年36卷第2期页码：33-41
- 作者机构：
  
  内蒙古农业大学沙漠治理学院, 荒漠生态系统保护与修复国家林业和草原局重点实验室,呼和浩特,010018
- 作者简介：
  
  [ "董晓宇(1994-),男,博士研究生,主要从事水土保持与荒漠化防治研究。E-mail:630833821@qq.com" ]
- 基金信息：
  
  国家自然科学基金项目（41967008,41807079）内蒙古自治区自然科学基金重大项目（2021ZD07）
- DOI：10.13870/j.cnki.stbcxb.2022.02.004
  中图分类号： S157.1
- 纸质出版：2022
- 稿件说明：
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董晓宇, 秦富仓, 李龙, 等. 裸露砒砂岩区坡面侵蚀过程中地表粗糙度与水力侵蚀特征参数的关系[J]. 水土保持学报, 2022,36(2):33-41.

DONG Xiaoyu, QIN Fucang, LI Long, et al. Relationship Between Surface Roughness and Hydraulic Erosion Characteristic Parameters During Slope Erosion in Exposed Pisha Sandstone Area[J]. 2022, 36(2): 33-41.
董晓宇, 秦富仓, 李龙, 等. 裸露砒砂岩区坡面侵蚀过程中地表粗糙度与水力侵蚀特征参数的关系[J]. 水土保持学报, 2022,36(2):33-41. DOI： 10.13870/j.cnki.stbcxb.2022.02.004.

DONG Xiaoyu, QIN Fucang, LI Long, et al. Relationship Between Surface Roughness and Hydraulic Erosion Characteristic Parameters During Slope Erosion in Exposed Pisha Sandstone Area[J]. 2022, 36(2): 33-41. DOI： 10.13870/j.cnki.stbcxb.2022.02.004.

摘要

坡面地形起伏状况是影响土壤侵蚀状况的重要因素

深入了解地表粗糙度和产流产沙以及水动力参数之间的关系是研究坡面土壤侵蚀过程的基础。采用野外原位模拟冲刷试验

使用三维激光扫描仪结合ArcGIS提取地形因子参数

研究了裸露砒砂岩区坡面侵蚀过程中地表粗糙度与侵蚀特征参数的关系。结果表明:(1)冲刷强度的增大使得阻力特征参数逐渐降低

且随着冲刷时间的增加

弗劳德数也呈现降低趋势

其他水力学参数呈增大趋势。冲刷强度<200 L/h时

坡面径流处于层流状态

随着冲刷强度增大

流态呈现出缓流向急流转化的趋势。(2)地表粗糙度随着冲刷流量的增大变化规律不明显。当冲刷强度较小时(<100 L/h)

地表粗糙度与产流产沙特征参数的关系较为密切。(3)流速与地表粗糙度呈显著的幂函数关系(R2>0.561)

是反映地表粗糙度变化的最优参数。(4)通过Mantel相关分析发现

随着冲刷强度的增大

地表粗糙度的变化规律由产流产沙特征向水动力参数特征转变。研究结果旨在揭示地表粗糙度与土壤侵蚀过程特征参数的关系

为裸露砒砂岩区坡面土壤侵蚀模型的构建提供理论依据。

Abstract

Slope topographic relief is an important factor affecting soil erosion. The relationship between surface roughness

sediment yield and hydrodynamic parameters is the basis for studying slope soil erosion process. The relationship between surface roughness and erosion characteristic parameters in slope erosion process in exposed Pisha sandstone area is studied by field in-situ simulated scour test and terrain factor parameters extracted by ArcGIS. The results showed that:(1) With the increase of scour intensity

the characteristic parameters of resistance decrease gradually

and the characteristic parameters of sediment yield and flow and other hydraulic parameters increase as a whole. With the increase of scouring time

Froude number showed a decreasing trend and other hydraulic parameters showed an increasing trend. The values of Reynolds numbers were all less than 500 under the three scour flow conditions

and the runoff was in laminar flow state. However

when the scour intensity increased

the Froude number showed the law of flow state from slow flow to rapid flow. (2) The change law of surface roughness was not obvious with the increase of scour flow. When the scour intensity was small (<100 L/h)

the relationship between surface roughness and sediment yield characteristics was close. (3) Velocity had a significant power function relationship with surface roughness (R2>0.561)

which is the optimal parameter reflecting the change of surface roughness. (4) Through Mantel correlation analysis

it was found that with the increase of scour intensity

the change of surface roughness will change from sediment yield characteristics to hydrodynamic parameters characteristics. The results are aimed to reveal the relationship between surface roughness and characteristic parameters of soil erosion process

and provide theoretical basis for the construction of slope soil erosion model in the exposed Pisha sandstone area.

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references

Yang F S, Bi C F, Cao M M, et al. Simulation of sediment retention effects of the doubleseabuckthorn plant fledible dams in the Pisha Sandstone area of China[J].Ecological Engineering,2014,71:21-31.

Liang Z S, Liu H W, Zhao Y B, et al. Effects of rainfall intensity, slope angle, and vegetation coverage on the erosion characteristics of Pisha sandstone slopes under simulated rainfall conditions[J].Environmental Science and Pollution Research,2020,27(15):17458-17467.

Wang Y C, Wu Y H, Kou, Q, et al. Definition of arsenic rock zone borderline and its classification[J].Science of Soil and Water Conservation,2007,5:14-18.

Zheng Z C, He S Q, Wu F Q.Changes of soil surface roughness under water erosion process[J].Hydrological Processes,2014,28(12):3919-3929.

张建文,李鹏,高海东,等.覆沙坡面微地形变化与侵蚀产沙的响应关系[J].干旱区研究,2020,37(3):757-764.

何淑勤,秦凤,宫渊波,等.横垄坡面地表糙度的变化特征及其对片蚀的响应[J].水土保持学报,2018,32(1):54-58.

王国鹏,肖波,李胜龙,等.黄土高原水蚀风蚀交错区生物结皮的地表粗糙度特征及其影响因素[J].生态学杂志,2019,38(10):3050-3056.

王林华,汪亚峰,王健,等.地表粗糙度对黄土坡面产流机制的影响[J].农业工程学报,2018,34(5):120-128.

Chu X F, Yang J, Chi Y P. Quantification of soil random roughness and surface depression storage:Methods, applicability, and limitations[J].Transactions of the ASABE,2012,55(5):1699-1710.

张娜娜,王兵,张宝琦,等.地表糙度测定方法研究[J].水土保持学报,2020,34(1):135-140,148.

梁心蓝,赵龙山,吴佳,等.地表糙度与径流水动力学特征参数响应规律模拟[J].农业工程学报,2014,30(19):123-131.

刘洋,孙保平,杨坪坪,等.模拟植被地表覆盖率与地表粗糙度对坡面流流速的影响[J].浙江农业学报,2017,29(3):498-505.

施明新,李陶陶,吴秉校,等.地表粗糙度对坡面流水动力学特征参数的影响[J].泥沙研究,2015(4):59-65.

张建文,李鹏,高海东,等.覆沙坡面微地形变化与侵蚀产沙的响应关系[J].干旱区研究,2020,37(3):757-764.

庞延杰,丁文峰,李清溪,等.粗糙度对坡面侵蚀及泥沙分选性影响试验研究[J].人民长江,2017,48(17):28-33.

孙佳乾.黄土坡耕地地表粗糙度与作物根茎对坡面流侵蚀影响的水动力学研究[D].陕西杨凌:西北农林科技大学,2020.

杨振奇,郭建英,秦富仓,等.裸露砒砂岩区降雨条件下坡面微地形变化规律[J].水土保持学报,2021,35(3):111-118.

An J, Zheng F L, Lu J, et al. Investigating the role of raindrop impact on hydrodynamic mechanism of soil erosion under simulated rainfall conditions[J].Soil Science,2012,177(8):517-526.

汤珊珊,李占斌,鲁克新,等.覆沙坡面水动力学参数与径流产沙的关系[J].农业工程学报,2017,33(20):136-143.

闫帅旗,朱冰冰,边熇.不同覆盖位置下草地坡面水流路径长度变化特征[J].农业工程学报,2021,37(3):116-123.

钱秋颖,秦富仓,李龙,等.自然降雨条件下坡面侵蚀地表粗糙度的空间异质性[J].水土保持学报,2021,35(3):46-52.

张永东,吴淑芳,冯浩,等.黄土陡坡细沟侵蚀动态发育过程及其发生临界动力条件试验研究[J].泥沙研究,2013(2):25-32.

文慧,倪世民,冯舒悦,等.赣南崩岗的发育阶段及部位对土壤水力性质的影响[J].农业工程学报,2019,35(24):136-143.

Yuan M M, Guo X, Wu L W, et al. Climate warming enhances microbial network complexity and stability[J].Nature Climate Change,2021,11:343-348.

肖丛宇,程金花,姜群鸥,等.台田措施下坡面流土壤侵蚀水动力学特征[J].水土保持学报,2019,33(4):10-15.

张科利,钟德钰.黄土坡面沟蚀发生机理的水动力学试验研究[J].泥沙研究,1998(3):76-82.

田野.不同宽度条件下坡面流水动力学特性研究[D].福州:福建农林大学,2019.

苏涛,张兴昌.砒砂岩陡坡面径流水动力学特征[J].水土保持学报,2012,26(1):17-21.

伍艳.黄河中游砒砂岩物化特性与侵蚀机理研究及小流域二元治理模式集成与示范[D].北京:中国地质大学,2020.

赵龙山.黄土坡地地表糙度特征及其对入渗、产流产沙的影响研究[D].陕西杨凌:西北农林科技大学,2015.

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