含岩屑紫色土水分扩散规律

李江文; 冉卓灵; 韩珍; 曾蔓漫; 魏朝富

doi:10.13870/j.cnki.stbcxb.2020.01.026

您当前的位置：

首页 >

文章列表页 >

含岩屑紫色土水分扩散规律

更新时间：2025-03-12

- 含岩屑紫色土水分扩散规律
- Water Diffusion Law of Purple Soil Containing Rock Fragments
- 水土保持学报 2020年34卷第1期页码：178-185
- 作者机构：
  
  西南大学资源环境学院,重庆,400715
- 作者简介：
- 基金信息：
  
  国家重点研发计划项目（2017YFD0800505）重庆市研究生科研创新项目（CYB18089）
- DOI：10.13870/j.cnki.stbcxb.2020.01.026
  中图分类号： S152.7
- 纸质出版：2020
- 稿件说明：
移动端阅览
李江文, 冉卓灵, 韩珍, 等. 含岩屑紫色土水分扩散规律[J]. 水土保持学报, 2020,34(1):178-185.

LI Jiangwen, RAN Zhuoling, HAN Zhen, et al. Water Diffusion Law of Purple Soil Containing Rock Fragments[J]. 2020, 34(1): 178-185.
李江文, 冉卓灵, 韩珍, 等. 含岩屑紫色土水分扩散规律[J]. 水土保持学报, 2020,34(1):178-185. DOI： 10.13870/j.cnki.stbcxb.2020.01.026.

LI Jiangwen, RAN Zhuoling, HAN Zhen, et al. Water Diffusion Law of Purple Soil Containing Rock Fragments[J]. 2020, 34(1): 178-185. DOI： 10.13870/j.cnki.stbcxb.2020.01.026.

摘要

紫色土中存在的岩屑显著影响土壤水分扩散。以往研究主要集中在 > 2 mm岩屑上而忽视了 < 2 mm岩屑的作用。因此，探讨 > 2 mm岩屑对紫色土水分扩散的影响基础上，明确 < 2 mm岩屑的作用对完善含岩屑紫色土水分扩散规律的研究具有重要的意义，从而为土壤水动力学模型的构建提供理论依据。以四川盆地紫色页岩发育的暗棕紫泥土和泥岩发育的红棕紫泥土为研究对象，设置3种岩屑粒径（0.25~2，2~5，5~10 mm）和4种岩屑含量（0，30%，50%，70%），利用水平土柱吸渗法测定含岩屑土壤湿润锋变化特征、水分扩散率D（θ）和土壤含水率θ，并拟合D（θ）、Boltzmann参数λ与θ之间的关系。结果表明：对于暗棕紫泥土，岩屑粒径为2~5 mm时，土壤湿润锋前进速率和D（θ）随岩屑含量增加呈先增加后降低再增加的趋势；岩屑粒径为0.25~2，5~10 mm时，土壤湿润锋前进速率和D（θ）随岩屑含量增加逐渐增加。对于红棕紫泥土，岩屑粒径为2~5，5~10 mm，随岩屑含量增加，70%岩屑含量的土壤D（θ）明显大于其余3个岩屑含量的土壤，而30%岩屑含量和50%岩屑含量土壤之间的D（θ）无显著差异，且土壤湿润锋前进速率均呈先增加后降低再增加的趋势；岩屑粒径为0.25~2 mm时，土壤湿润锋前进速率和D（θ）随岩屑含量增加逐渐增加。因此，随岩屑含量提高，土壤水分扩散速率整体呈现增加趋势；且泥岩发育的土壤水分扩散速率高于页岩发育的土壤。

Abstract

Rock fragments in purple soil can directly affect soil water diffusion. The past research mainly focused on the rock fragments with particle size > 2 mm

while the particle size of < 2 mm was ignored. Therefore

based on discussing the influence of the particle size > 2 mm on the water migration of purple soils

it is of great significance to clarify the influence of < 2 mm rock fragments on the moisture diffusion of purple soil containing rock fragments

thus providing theoretical basis for the construction of soil hydrodynamic model. Purple shale and mudstone in Sichuan basin and their developed soils (dark brown purple soil and red brown purple soil) were taken as research objects

three kinds of rock fragments particle sizes (0.25~2

2~5

5~10 mm) and four kinds of rock fragments contents (0

30%

50%

70%) were set. The horizontal soil column suction method was used to determine the progress of wet front of the soils containing rock fragments

the water diffusivity D(θ) and the soil moisture content θ

Fitting the relationship between D(θ)

Boltzmann parameters λ and θ. The result showed that for dark brown purple soil

when the particle size of the rock fragment was 2~5 mm

with the increase of rock fragments contents

the advancing rate of soil wetting front and D(θ) both had a tendency of increasing first

then decreased and finally increased; while when the particle size of the rock fragment was 0.25~2

5~10 mm

with the increase of rock fragments contents

the advancing rate of soil wetting front and D(θ) gradually increased. For red brown purple soil

when the size of rock fragment was 2~5

5~10 mm

the D(θ) of 70% rock fragments content was obviously larger than that of the other three rock fragments content of soils. The D(θ) of 30% rock fragments contents and 50% rock fragments contents were not significantly different. The advancing rate of soil wetting front had a tendency of increasing first

then decreased and finally increased. While when the particle size of the rock fragments was 0.25~2 mm

with the increase of rock fragments contents

the advancing rate of soil wetting front and D(θ) gradually increased. Therefore

with the increase of rock fragments contents

the soil water migration rate showed an increasing trend as a whole

and the water migration rate of soil which was developed by mudstone was higher than that by shale.

关键词

Keywords

references

韩珍,王小燕,李馨欣.土石混合紫色土坡面水文过程的实验研究[J].山地学报,2017,35(4):26-33.

Zhang W H, Wei C F, Li Y, et al. Effects of rock fragments on infiltration and evaporation in hilly purple soils of Sichuan Basin, China[J]. Environmental Earth Sciences,2011,62(8):1655-1665.

钟守琴,刘波,魏朝富,等.紫色泥岩土壤<2 mm岩屑及其对抗剪强度的作用机制[J].中国农业科学,2015,48(23):4846-4858.

骆紫藤,牛健植,孟晨,等.华北土石山区森林土壤中石砾分布特征对土壤大孔隙及导水性质的影响[J].水土保持学报,2016,30(3):305-308.

Descroix L, Viramontes D, Vauclin M,et al.Influence of soil surface features and vegetation on runoff and erosion in the Western Sierra Madre (Durango, Northwest Mexico)[J]. Catena,2001,43:115-135.

Poesen J, Lavee H. Rock fragments in top soils:Significance and processes[J]. Catena,1994,23:1-28.

王小燕.紫色土碎石分布及其对坡面土壤侵蚀的影响[D].武汉:华中农业大学,2012.

潘英华,雷廷武,张晴雯,等.土壤结构改良剂对土壤水动力学参数的影响[J].农业工程学报,2003,19(4):37-39.

希勒尔.土壤和水:物理原理和过程[M].北京:农业出版社,1981:92-235.

李映强.赤红壤非饱和土壤水扩散率及其影响因素[J].华南农业大学学报,1998,18(2):71-75.

戴翠婷,刘窑军,王天巍,等.三峡库区高砾石含量紫色土优先流形态特征[J].水土保持学报,2017,31(1):106-111.

Chen H, Zhang X P, Abla M, et al. Effects of vegetation and rainfall types on surface runoff and soil erosion on steep slopes on the Loess Plateau, China[J]. Catena,2018,170:141-149.

Meng C, Niu J, Li X, et al.Quantifying soil macropore networks in different forest communities using industrial computed tomography in a mountainous area of North China[J]. Journal of Soils and Sediments, 2016,17(9):1-14.

吕国安,蔡崇法.丹江口库区石渣土土壤水分有效性研究[J].水土保持学报,2002,16(3):106-109.

吕刚,王婷,王韫策,等.辽西低山丘陵区坡地砾石含量及粒径对土壤入渗性能的影响[J].水土保持学报,2017,31(4):87-91.

Lavee H, Poesen J W A. Overland flow generation and continuity on stone-covered soil surfaces[J]. Hydrological Processes,1991,5(4):345-360.

Mukhlisin M, Naam S I. Effect of rock fragments on pore water pressure and slope stability at a hillslope[J]. Journal of the Geological Society of India,2015,86(3):337-343.

Rawls W J, Brakensiek D L, Simantion J R, et al. Prediction of soil cover and soil rock for rangeland infiltration[J]. Journal of Range Management,1988,41(4):307-308.

周蓓蓓,邵明安.土石混合介质饱和导水率的研究[J].水土保持学报,2006,20(6):62-66.

王慧芳,邵明安.含碎石土壤水分入渗试验研究[J].水科学进展,2006,17(5):604-609.

朱元骏,邵明安.含砾石土壤降雨入渗过程模拟[J].水科学进展,2010,21(6):779-787.

龚久平,李燕,刘吉振,等.村镇水源地土壤中砾石对水分运动的影响[J].江西农业大学学报,2010,32(3):621-627.

李燕,刘吉振,魏朝富,等.砾石对土壤水分入渗(扩散)的影响研究[J].土壤学报,2011,48(2):437-439.

Kanamaru T, Suganuma Y, Oiwane H, et al.The weathering of granitic rocks in a hyper-arid and hypothermal environment:A case study from the Sor-Rondane Mountains, East Antarctica[J]. Geomorphology,2018,317:62-74.

熊顺贵.基础土壤学[M].北京:中国农业大学出版社,2001:123-140.

鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000:24-60.

雷志栋.土壤水动力学[M].北京:清华大学出版社,1988:92-235.

汪明星.重庆山地丘陵区紫色土饱和导水率传递函数研究[D].重庆:西南大学,2017.

周蓓蓓,邵明安.不同碎石含量及直径对土壤水分入渗过程的影响[J].土壤学报,2007,44(5):801-807.

王小燕,李朝霞,蔡崇法.砾石覆盖紫色土坡耕地水文过程[J].水科学进展,2012,23(1):38-45.

Ravina I, Magier J. Hydraulic conductivity and water retention of clay soils containing coarse fragments[J]. Soil Science Society of America Journal,1984,48(4):736-740.

Niu Y B, Gao Z L, Li Y H, et al.Effect of rock fragment content on erosion processes of disturbed soil accumulation under field scouring conditions[J]. Journal of Soils and Sediments,2019,19(4):1708-1723.

吴凤平,王辉,罗静波,等.砂石含量及粒径对红壤水分扩散率的影响[J].水土保持学报,2009,23(2):228-231.

詹振芝,黄炎和,蒋芳市,等.砾石含量及粒径对崩岗崩积体渗透特性的影响[J].水土保持学报,2017,31(3):85-90.

杨艳芬,王全九,曾辰,等.土石混合介质水分入渗特性试验研究[J].水土保持学报,2009,23(5):87-90.

孙志高,刘景双.三江平原典型草甸小叶章湿地土壤水分扩散率研究[J].干旱区资源与环境,2008,22(2):152-156.

浏览量

962

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

不同坡度和植被覆盖黄土对降雨入渗的响应规律

壤中滴灌条件下植被混凝土水分运移规律

基于三轴UU试验的土体含水率对根土复合体强度特性的影响

滴灌条件下原状土与扰动土水分运动特性

非常规水水质对红壤水分运移参数的影响及其过程模拟