金沙江干热河谷冲沟区优先流影响下的土壤力学特性

徐贵迁; 赵洋毅; 王克勤; 段旭; 李志成

doi:10.13870/j.cnki.stbcxb.2023.02.013

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金沙江干热河谷冲沟区优先流影响下的土壤力学特性

更新时间：2025-03-12

- 金沙江干热河谷冲沟区优先流影响下的土壤力学特性
- Soil Mechanical Properties Under the Influence of Preferential Flow in the Gully Area of Jinsha River's Dry-hot Valley
- 水土保持学报 2023年37卷第2期页码：100-110
- 作者机构：
  
  1. 西南林业大学生态与环境学院,昆明,650224
  2. 国家林业和草原局云南玉溪森林生态系统国家定位观测研究站,昆明,650224
- 作者简介：
  
  [ "徐贵迁(1995—),男,硕士研究生,主要从事水土保持研究。E-mail:184316818@qq.com" ]
- 基金信息：
  
  国家自然科学基金项目(42067005);云南省基础研究计划面上项目(202001AT070136);云南省农业联合专项面上项目(202101BD070001-075);云南省万人计划青年拔尖人才专项(YNWR-QNBJ-2019-215,YNWR-QNBJ-2019-226);国家林草局林业科技创新平台运行项目"云南玉溪森林生态系统国家长期科研基地"(2020132550);云南省自然生态监测网络项目(2022-YN-13)
- DOI：10.13870/j.cnki.stbcxb.2023.02.013
  中图分类号： S157.1
- 纸质出版：2023
- 稿件说明：
移动端阅览
徐贵迁, 赵洋毅, 王克勤, 等. 金沙江干热河谷冲沟区优先流影响下的土壤力学特性[J]. 水土保持学报, 2023,37(2):100-110.

XU Guiqian, ZHAO Yangyi, WANG Keqin, et al. Soil Mechanical Properties Under the Influence of Preferential Flow in the Gully Area of Jinsha River's Dry-hot Valley[J]. 2023, 37(2): 100-110.
徐贵迁, 赵洋毅, 王克勤, 等. 金沙江干热河谷冲沟区优先流影响下的土壤力学特性[J]. 水土保持学报, 2023,37(2):100-110. DOI： 10.13870/j.cnki.stbcxb.2023.02.013.

XU Guiqian, ZHAO Yangyi, WANG Keqin, et al. Soil Mechanical Properties Under the Influence of Preferential Flow in the Gully Area of Jinsha River's Dry-hot Valley[J]. 2023, 37(2): 100-110. DOI： 10.13870/j.cnki.stbcxb.2023.02.013.

摘要

为探究金沙江干热河谷冲沟区优先流与土壤力学的相关机理

揭示优先流影响下土壤抗剪强度特征规律

丰富干热河谷冲沟发育区沟侵蚀机理

为该地区进一步开展沟蚀治理提供理论依据。在典型冲沟发育区选择完整冲沟为研究对象

基于染色示踪、土壤理化、原状土直剪试验

利用RDA等统计方法分析优先流与土壤力学指标间的相关性

明晰优先流和抗剪强度的关系。结果表明:(1)由于冲沟发育使冲沟内由集水区到沟底优先流发育程度逐渐降低。土壤含水率、容重、总孔隙度、有机质含量均呈优先流区大于基质流区

机械组成分形维数整体上基质流区(2.680~2.874)大于优先流区(2.746~2.893)。(2)冲沟区优先流通过影响土壤黏聚力和内摩擦角进而对抗剪强度产生影响

一定程度上会降低土体抗剪强度。集水区、沟头抗剪强度大于沟床和沟底。优先流区黏聚力(1.24~2.65 kPa)小于基质流区黏聚力(1.91~4.27 kPa)

优先流区内摩擦角(19.52°~22.47°)略大于基质流区内摩擦角(17.68°~22.35°)

优先流区抗剪强度(36.66~43.68 kPa)整体小于基质流区抗剪强度(38.74~47.32 kPa)。(3)优先流与土壤黏聚力和内摩擦角有不同程度的相关性。土壤黏聚力与染色面积比、基质流深度呈显著负相关

内摩擦角与优先流百分数、优先流区染色面积比呈负相关;抗剪强度与染色面比、最大染色深度、优先流百分数、优先流区染色面积比呈负相关。

Abstract

In order to explore the correlation mechanism between preferential flow and soil mechanics in the gully area of the dry-hot valley of Jinsha River and reveal the characteristics of soil shear strength under the influence of priority flow

to enrich the mechanism of gully erosion in the development area of hot and dry river valleys and provide theoretical basis for further gully erosion control in this area

the intact gully in the typical gully development area were selected as the study object

and based on staining tracer

soil physicochemical and intact soil straight shear experiments

the correlation between priority flow and soil mechanical indexes were analyzed by statistical methods such as RDA

and to clarify the relationship between preferential flow and shear strength.The results showed that:(1) Due to the development of ditch

the preferential flow development degree from the catchment area to the bottom of the ditch was gradually reduced.The soil moisture content

bulk density

total porosity and organic matter content in the preferential flow area were higher than that the matrix flow area

and the fractal dimension of mechanical composition in the matrix flow area (2.680~2.874) was greater than that in the preferential flow area (2.746~2.893).(2) The preferential flow area in the gully area affects the soil cohesion and strength

which will reduce the soil shear strength to a certain extent.The shear strength of the water catchment area and the trench head was greater than that of the ditch bed and the ditch bottom.The cohesive in the preferential flow region (1.24~2.65 kPa) was smaller than that in the matrix flow area region (1.91~4.27 kPa)

the internal friction angle in the preferential flow region (19.52°~22.47°) was slightly larger than that in the matrix flow area region (17.68°~22.35°)

and the shear strength of the preferential flow area region (36.66~43.68 kPa) was generally smaller than that of the matrix flow area region (38.74~47.32 kPa).(3) The preferential flow had different degree of correlation with soil cohesion and internal friction angle.Soil cohesion was significantly negatively correlated with dyeing area ratio and stroma flow depth

while internal friction angle was negatively correlated with the percentage of the preferential flow and dyeing area ratio of preferred flow area.The shear strength was inversely correlated with the ratio of staining surface

the maximum dyeing depth

the percentage of preferential flow and the dyeing area of the preferential flow area.

关键词

Keywords

references

钟祥浩.干热河谷区生态系统退化及恢复与重建途径[J].长江流域资源与环境,2000,9(3):376-383.

Yang D, Xiong D H, Zhang B J, et al. Effect of grass basal diameter on hydraulic properties and sediment yield processes in gully beds in the Dry-hot Valley Region of Southwest China[J].Catena,2017,152:299-310.

井光花,于兴修,李振炜.土壤可蚀性研究进展综述[J].中国水土保持,2011(10):44-47,66.

陈安强,张丹,熊东红,等.元谋干热河谷坡面表层土壤力学特性对其抗冲性的影响[J].农业工程学报,2012,28(5):108-113.

Elham A K, Hojat E, Mohammad R M, et al. Estimation of unsaturated shear strength parameters using easily-available soil properties[J].Soil and Tillage Research,2018,184:118-127.

Zhu T X, Xu X Z, Zhu A X, et al. Assessment of soil shear strength in gully systems: A case-study in the Wangjiagou (WJG) watershed on the Loess Plateau of China[J].Land Degradation and Development,2020,31(17):2648-2661.

邵一敏,赵洋毅,段旭,等.金沙江干热河谷典型林草地植物根系对土壤优先流的影响[J].应用生态学报,2020,31(3):725-734.

Latorre B, Moret-Fernández D. A new application of the upward infiltration method to quantify preferential flow hydraulic conductivity on undisturbed soil cores[J].Journal of Hydrology,2022,610:e127940.

Chen L L, Qiu Q G, Wang P, et al. Visualization study on preferential flow in highly saturated and super hydrophilic porous media by combining dye tracking and infrared imaging[J].Journal of Hydrology,2022,612:e128077.

侯芳,程金花,王通簙.基于探地雷达的滨河带藤本和次生乔木林土壤优先流特征[J].生态学报,2022,42(5):1766-1776.

马昀,孟晨,岳健敏,等.宁夏荒漠草原不同林龄人工柠条林地土壤优先流研究[J].生态学报,2022,42(3):895-903.

万艳萍,赵洋毅,段旭,等.干湿交替对红河干旱河谷区土壤优先流形成特征的影响[J].应用生态学报,2021,32(7):2397-2406.

Verachtert E, Van Den E M, Poesen J, et al. Spatial interaction between collapsed pipes and landslides in hilly regions with loess-derived soils[J].Earth Surface Processes and Landforms,2013,38(8):826-835.

Shao W, Bogaard T A, Bakker M, et al. Quantification of the influence of preferential flow on slope stability using a numerical modelling approach[J].Hydrology and Earth System Sciences,2015,19(5):2197-2212.

张素,熊东红,张宝军,等.干湿交替下干热河谷冲沟不同土层的抗侵蚀性研究[J].农业机械学报,2016,47(12):152-159,212.

杨丹,熊东红,刘守江,等.土壤理化及力学性质对干热河谷台地边坡沟蚀发育的影响[J].农业工程学报,2018,34(4):170-176.

Zhang S, Xiong D H, Wu H, et al. Effects of the root morphological characteristics of different herbaceous species on soil shear strength and soil anti-scourability in the dry-hot valley region of South-western China[J].Soil Research,2020,58(2):e189.

段青松,何丙辉,余建新,等.金沙江干热河谷乡土草本植物根系固土能力原位测定[J].云南大学学报(自然科学版),2015,37(5):779-785.

文慧,倪世民,王艺彤,等.赣南崩岗区不同植被类型粉砂质土壤抗剪强度及其影响因素[J].土壤学报,2022,59(6):1517-1526.

张红霞,彭新华,郭自春,等.土壤含水量和容重对砂姜黑土抗剪强度的影响及其传递函数构建[J].土壤通报,2022,53(3):524-531.

Zhang J L, Shi D M, Jin H F, et al. Characteristics of cultivated layer soil shear strength for sloping farmland in response to soil erosion in the Three Gorges Reservoir Area, China[J].Catena,2022,215:e106304.

Huang M Y, Sun S J, Feng K J, et al. Effects of

Neyraudia reynaudiana

roots on the soil shear strength of collapsing wall in Benggang, southeast China[J].Catena,2022,210:e105883.

Liu X, Cheng X F, Wang N, et al. Effects of vegetation type on soil shear strength in Fengyang Mountain Nature Reserve, China[J].Forests,2021,12(4):e490.

张学宁,王德成,尤泳,等.基于草地切根的根土复合体本构关系研究[J].农业机械学报,2022,53(7):337-346.

Forster M, Ugarte C, Lamandé M, et al. Root traits of crop species contributing to soil shear strength[J].Geoderma,2022,409:e115642.

毕银丽,罗睿,王双明.接菌对紫花苜蓿根系抗拉性及根菌复合土体抗剪强度影响[J].煤炭学报,2022,47(6):2182-2192.

文孝丽,董一帆,杨己,等.元谋干热河谷冲沟发育区植被恢复对土壤碳氮的影响[J].水土保持学报,2021,35(4):282-288.

杨培岭,罗远培,石元春.用粒径的重量分布表征的土壤分形特征[J].科学通报,1993,38(20):1896-1899.

解璐萌,张英虎,张明祥,等.黄河三角洲刺槐群落土壤优先流及养分分布特征[J].生态学报,2021,41(19):7713-7724.

杜晓晴,牛健植,侯琨,等.华北土石山区优先流区与基质流区土壤特性分析[J].中国水土保持科学,2015,13(3):51-57.

武亚楠,张英虎,张振明,等.黄河三角洲湿地植物根区优先流区和基质流区土壤特性分布差异[J].北京师范大学学报(自然科学版),2021,57(1):69-75.

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