Analysis on the Difference of Soil Hydraulic Properties in Different Soil Layers of Benggang

GU Jingyao; YANG Bangge; WEI Yujie; CAI Chongfa

doi:10.13870/j.cnki.stbcxb.2021.02.009

您当前的位置：

首页 >

文章列表页 >

Analysis on the Difference of Soil Hydraulic Properties in Different Soil Layers of Benggang

更新时间：2025-03-12

- Analysis on the Difference of Soil Hydraulic Properties in Different Soil Layers of Benggang
- Vol. 35, Issue 2, Pages: 61-67(2021)
- 作者机构：
  
  1. 华中农业大学资源与环境学院,武汉,430070
  2. 农业部长江中下游耕地保育重点实验室,武汉,430070
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.02.009
  CLC： S152.7
- Published：2021
- 稿件说明：
移动端阅览
GU Jingyao, YANG Bangge, WEI Yujie, et al. Analysis on the Difference of Soil Hydraulic Properties in Different Soil Layers of Benggang[J]. 2021, 35(2): 61-67.
DOI：

GU Jingyao, YANG Bangge, WEI Yujie, et al. Analysis on the Difference of Soil Hydraulic Properties in Different Soil Layers of Benggang[J]. 2021, 35(2): 61-67. DOI： 10.13870/j.cnki.stbcxb.2021.02.009.

摘要

为研究崩岗不同土层土壤水力学特性的差异性，采用离心法测定不同土层土壤水分特征曲线，筛选出适合的土壤水分特征曲线拟合模型，结合统计模型，推求土壤的当量孔径分布、比水容量、非饱和导水率和扩散率，分析崩岗不同土层土壤水力学参数的变化规律。结果表明，崩岗土层从红土层到砂土层的变化过程中，土壤质地由黏土向砂土变化；Fredlund & Xing模型对崩岗土壤土水特征曲线拟合效果最好；参数θs、α、n随着质地变黏重逐渐减小；随着土层深度的增加，土壤的持水性能降低；土壤比水容量、非饱和导水率和扩散率受土壤质地和基质吸力的共同影响。在低吸力阶段，3个指标随基质吸力变化比较平缓，砂土层土壤比水容量和非饱和导水率最大，扩散率最小；而在高吸力阶段，砂土层土壤的这些指标降低较快，且低于其他土层，各层土壤间导水率和扩散率差异随着基质吸力的增加而增大。

Abstract

In order to study the difference in hydraulic characteristics of different soil layers in benggang

soil-water characteristic curves of different layer soils were measured by using the high-speed centrifuge method

and a suitable soil-water characteristic curve (SWCC) fitting model was screened. Soil equivalent pore size distribution

soil specific water capacity C(θ)

unsaturated conductivity K(θ)

and soil water diffusivity D(θ) were calculated and then analyzed based on the selected SWCC model and soil hydraulic statistical models. Results showed that soils shifted from clay to sand gradually with soil depth increased. Among the frequently-used SWCC models

the Fredlund & Xing model was the optimal one for benggang. The model fitting parameters θs

and n decreased when soil texture changed from sand to clay. As the depth of the soil layer increased

the water holding capacity of the soil decreased. The values of C(θ)

K(θ)

and D(θ) were influenced by both soil texture and water content (or suction). In the low suction stage

these three indices changed gently with soil suction

and the values of C(θ) and K(θ) of sandy layer soils were larger than those in other layers; while the performance of D(θ) was the opposite

which were mainly controlled by macropores. In the high suction stage

all those indices of sandy layer soils decreased rapidly and were lower than other layers; the difference of K(θ) and D(θ) values between different layer soils become bigger and bigger with the suction increased

which was due to the clay adsorption and soil capillarity of micropores.

关键词

Keywords

references

张德谦,倪世民,王军光,等.不同侵蚀程度花岗岩红壤坡面侵蚀泥沙颗粒特征研究[J].土壤学报,2020,57(6):1387-1398.

冯舒悦,王军光,文慧,等.赣南崩岗侵蚀区不同部位土壤抗剪强度及其影响因素研究[J].土壤学报,2020,57(1):71-83.

魏玉杰,吴新亮,蔡崇法.崩岗体剖面土壤收缩特性的空间变异性[J].农业机械学报,2015,46(6):153-159.

张晓明,丁树文,蔡崇法.干湿效应下崩岗区岩土抗剪强度衰减非线性分析[J].农业工程学报,2012,28(5):241-245.

林敬兰,黄炎和,张德斌,等.水分对崩岗土体抗剪切特性的影响[J].水土保持学报,2013,27(3):55-58.

胡传旺,王辉,刘常,等.南方典型土壤水力特征差异性分析[J].水土保持学报,2017,31(2):100-105.

赵爱辉,黄明斌,史竹叶.两种土壤水分特征曲线间接推求方法对黄土的适应性评价[J].农业工程学报,2008,24(9):11-15.

Zeleke T B, Si B C. Characterizing scale-dependent spatial relationships between soil properties using multiracial techniques[J].Geoderma,2006,134(3/4):440-452.

Gender W R. Some steady state solutions of the unsaturated moisture flow equation with application to evaporation from a water table[J].Soil Science,1958,85:228-232.

Brooks R H, Corey A T. Hydraulic properties of porous medium. Hydrology Paper,1964, DOI:10.1016/j.trc.2012.10.009.

Van Genuchten M T. A closed-from equation for predicting the hydraulic conductivity of unsaturated soils[J].Soil Science Society of America Journal,1980,44:892-898.

Fredlund D G, Xing A. Equations for the soil-water characteristics curve[J].Canadian Geotechnical Journal,1994,31:521-532.

胡传旺,王辉,武芸,等.NaCl溶液处理亚热带土壤水分特征曲线差异与模型优选[J].农业机械学报,2018,49(4):290-296.

Wheeler S J, Shanna R S, Buisson M S R. Coupling of hydraulic hysteretic and stress-strain behavior in unsaturated soils[J].Geotechnique,2003,53(1):43-54.

高会议,郭胜利,刘兆文,等.不同施肥土壤水分特征曲线空间变异[J].农业机械学报,2014,45(6):161-167.

胡钜鑫,虎胆·吐马尔白,穆丽德尔·托伙加,等.非饱和土壤导水率试验计算与模拟分析[J].石河子大学学报(自然科学版),2019,37(1):105-111.

刘新平,赵哈林,何玉惠,等.沙质农田表层土壤水分扩散率测定及氯化钴试纸的应用研究[J].水土保持学报,2007,21(6):147-150.

王睿垠,魏永霞,刘慧,等.生物炭对东北草甸黑土水分运动参数的影响[J].农业机械学报,2018,49(7):186-194.

李志萍,王欢,曾磊,等.甘肃黑方台黄土水分运动参数试验研究[J].华北水利水电大学学报(自然科学版),2015,36(4):15-19.

刘彬彬.基于微遗传算法的土壤水力特征参数反演及水分运动模拟[D].杭州:浙江大学,2018.

赵晓晓,黄炎和,林金石,等.崩壁不同土层水分运动特征的染色示踪[J].福建农林大学学报(自然科学版),2017,46(2):199-205.

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):85-90,95.

依艳丽.土壤物理研究法[M].北京:北京大学出版社,2009.

廖凯华,徐绍辉,吴吉春,等.不同土壤转换函数预测砂土非饱和导水率的对比分析[J].水科学进展,2013,24(7):560-567.

蒋芳市,黄炎和,林金石,等.崩岗崩积体土壤渗透特性分析[J].水土保持学报,2013,27(3):49-54.

林敬兰,黄炎和,蒋芳市,等.崩岗土体的渗透性能机理研究[J].水土保持学报,2013,27(2):53-56.

雷志栋,杨诗秀,谢传森.土壤水动力学[M].北京:清华大学出版社,1988.

李卓,冯浩,吴普特,等.砂粒含量对土壤水分蓄持能力影响模拟试验研究[J].水土保持学报,2009,23(3):204-208.

罗丽澎,王辉,朱晋斌,等.温度对南方红壤和水稻土水分特征曲线影响差异性分析[J].水土保持学报,2019,33(5):72-78.

叶为民,钱丽鑫,白云,等.由土-水特征曲线预测上海非饱和软土渗透系数[J].岩土工程学报,2005,27(11):1262-1265.

刘新平,张铜会,何玉惠,等.不同粒径沙土水分扩散率[J].干旱区地理,2008,31(2):249-253.

马美红,张书函,王会肖,等.非饱和土壤水分运动参数的确定:以昆明红壤土为例[J].北京师范大学学报(自然科学版),2017,53(1):38-42.

谢森传,慧士博,李华珍.非饱和土壤水分运动参数的测定[J].水文地质工程地质,1982,5(1):8-15.

Views

1171

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Difference Analysis of Hydraulic Characteristics of Typical Soils in South China

Effects of Soil Texture on Effective Mixing Depth and Solute Loss

Effect of Weathering Intensity on Physical and Chemical Properties of Typical Benggang Profile in Granite Red Soil Area of Southeast Guangxi

Experimental Study on Erosion Hydrodynamic Characteristics of Concentrated Flow on Earth-rock Mixed Colluvial Deposit Slopes

Related Author

HU Chuanwang1

WANG Hui1

LIU Chang1

YUAN Hong2

LI Yuyuan3

ZHENG Hao

LI Zihan

Related Institution

Department of Engineering, Hunan Agricultural University

Department of Resource and Environment，Hunan Agricultural University

Key Laboratory of Agro-ecological Processes in Subtropical Ｒegion, Institute of Subtropical Agriculture, Chinese Academy of Sciences

College of Resource and Environment， Huazhong Agricultural University

College of Agriculture, Guangxi University

⁰