1. 北京林业大学水土保持学院,北京,100083
2. 国家林业局水土保持重点实验室,北京,100083
[ "肖丛宇(1994-),男,硕士研究生,主要从事土壤侵蚀研究。E-mail:congyu_xiao@163.com" ]
纸质出版:2019
移动端阅览
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.
XIAO Congyu, CHENG Jinhua, JIANG Qun'ou, et al. Hydrodynamic Characteristics of Soil Erosion in Overland Flow Under Terraced Field Measure[J]. 2019, 33(4): 10-15.
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. DOI: 10.13870/j.cnki.stbcxb.2019.04.002.
XIAO Congyu, CHENG Jinhua, JIANG Qun'ou, et al. Hydrodynamic Characteristics of Soil Erosion in Overland Flow Under Terraced Field Measure[J]. 2019, 33(4): 10-15. DOI: 10.13870/j.cnki.stbcxb.2019.04.002.
通过野外径流小区放水试验,研究2种台田类型(土坎,石坎)、3种台田级数(1,2,3级)、1种坡度(10°)、3种放水流量(0.5,1,1.5 m3/h)下坡面流土壤侵蚀过程,分析台田措施下坡面流土壤侵蚀水动力学特征。结果表明,台田级数对坡面流流态影响较大,增加台田级数可使坡面流波动性降低,台田类型对雷诺数影响相对较小。土壤分离速率总体随流量增大而增大,相同流量条件下,呈波动性增加后减少且逐渐趋于平稳的特征,两者相关关系用指数函数回归方程拟合(R2>0.840)。同类台田且田面宽度和相同条件下,土壤分离速率与台田级数呈负相关关系,阻力系数与流量呈负相关关系,坡面流土壤分离速率与阻力系数呈负相关关系。研究结果对认识坡面流土壤侵蚀的过程和规律具有重要意义,也为坡面侵蚀物理模型的建立提供参考。
A field erosion simulation experiment was carried out to study overland flow soil erosion process under 2 terrace types (soil
stone)
3 terrace ridges (1
2
3 ridge)
1 slope gradients (10°)
and 3 water flow rates (0.5
1
1.5 m3/h). The hydrodynamic characteristics of soil erosion in overland flow under terraced field measure were analyzed. The results showed that the terrace ridge had a great influence on the flow state of the overland flow. The Increasing in the number of terraces could reduce the fluctuation of the overland flow. The influence of terrace types on the Reynolds number was relatively small. The overall soil detachment rates increased with the increase of flow rates. Under the same flow conditions
the soil detachment rates increased first and then decreased
and gradually stabilized. The correlation between the two was fitted by exponential function regression equation (R2>0.840). For the similar terrace type and field width
and under the same conditions
the soil separation rates were negatively correlated with the number of the field
and the drag coefficient was negatively correlated with the flow. The soil separation rates and the drag coefficient were negatively correlated. The research results could be great significance for understanding the process and law of soil erosion on overland flow
and also provide reference for the establishment of physical model of overland erosion.
白清俊.黄土坡面细沟侵蚀带产流产沙模型研究[D].陕西杨凌:西北农林科技大学,1999.
张光辉,卫海燕,刘宝元.坡面流水动力学特性研究[J].水土保持学报,2001,15(1):58-61.
徐震.草被冠层和根系对坡面径流输沙的影响[D].陕西杨凌:西北农林科技大学,2011.
汪邦稳,肖胜生,张光辉,等.南方红壤区不同利用土地产流产沙特征试验研究[J].农业工程学报,2012,28(2):239-243.
李勉,姚文艺,杨剑锋,等.草被覆盖对坡面流流态影响的人工模拟试验研究[J].应用基础与工程科学学报,2009,17(4):513-523.
王玲玲,姚文艺,申震洲,等.草被覆盖度对坡面流水力学参数的影响及其减沙效应[J].中国水土保持科学,2009,7(1):80-83.
朱慧鑫,胡晓静,程金花,等.草被覆盖下坡面流土壤侵蚀水动力学特征[J].东北农业大学学报,2018,49(7):48-57.
戴矜君,程金花,张洪江,等.植被覆盖下坡面流阻力变化规律[J].水土保持学报,2016,30(2):44-49.
Abrahams A D, Li G, Parsons A J. Rill hydraulics on a semiarid hillslope, southern Arizona[J].Earth Surface Processes and Landforms,2015,21(1):35-47.
张科利,唐克丽.黄土坡面细沟侵蚀能力的水动力学试验研究[J].土壤学报,2000,37(1):9-15.
任熠,王先拓,王玉宽,等.紫色土坡面细沟流的水动力学特征试验研究[J].水土保持学报,2007,21(6):39-42.
张光辉.坡面薄层流水动力学特性的实验研究[J].水科学进展,2002,13(2):159-165.
李勉,姚文艺,陈江南,等.草被覆盖下坡面-沟坡系统坡面流阻力变化特征试验研究[J].水利学报,2007,38(1):112-119.
杨春霞,王丹,王玲玲,等.草被覆盖度对坡面流水动力学参数的影响[J].中国水土保持,2008(9):36-38.
王龙生,蔡强国,蔡崇法,等.黄土坡面细沟发育过程中含沙量与水动力学参数的关系[J].水土保持学报,2013,27(5):1-6.
Nearing M. Hydraulics and erosion in eroding rills[J].Water Resources Research,1997,33(4):865-876.
谢亚茹,程金花,李语晨,等.黄土区土壤结皮和垄高对坡面产流产沙的影响[J].东北农业大学学报,2017,48(10):42-49.
郭太龙,卓慕宁,李定强,等.华南红壤坡面侵蚀水动力学机制试验研究[J].生态环境学报,2013,22(9):1556-1563.
丁文斌,史东梅,何文健,等.放水冲刷条件下工程堆积体边坡径流侵蚀水动力学特性[J].农业工程学报,2016,32(18):153-161.
戴矜君,程金花,张洪江,等.野外放水条件下坡面流水动力学特征[J].中国水土保持科学,2016,14(3):52-59.
丁文峰,李占斌,丁登山.坡面细沟侵蚀过程的水动力学特征试验研究[J].水土保持学报,2002,16(3):72-75.
王秋霞,丁树文,邓羽松,等.花岗岩崩岗区不同土层的侵蚀水动力学特征[J].土壤学报,2017,54(3):570-580.
肖培青,姚文艺,申震洲,等.草被覆盖下坡面径流入渗过程及水力学参数特征试验研究[J].水土保持学报,2009,23(4):50-53.
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