Effects of initial bulk density on soil water characteristic curve
Received date: 2021-12-15
Revised date: 2022-05-05
Online published: 2022-09-26
Soil water characteristic curve is one of the important soil water movement parameters affected by soil texture, bulk density, structure, and temperature. Three types of soil were selected in this study and five initial bulk density treatments were set to explore the effect of initial bulk density on soil water characteristic curve and its corresponding water movement parameters. The soil water characteristic curve and its water movement parameters were obtained by van Genuchten model fitting, and the effect of initial bulk density on soil water characteristic curve and corresponding water movement parameters of different types was analyzed. The results showed that in the near-saturation stage (S < 100 kPa), the water characteristic curves of the three soils under the same soil water suction all showed a gradual increase in soil volumetric water content with the initial bulk density. In the high soil water suction section (S > 100 kPa), the water characteristic surface of black soil gradually increased with the initial bulk density, and the water characteristic surface of red soil decreased with the increase in initial bulk density from 1.3 cm3·cm-3 to 1.4 cm3·cm-3. The difference lies in a remarkably steep increase in the water characteristic surface of loess soil from 1.3 cm3·cm-3 to 1.4 cm3·cm-3. The van Genuchten model had a good fitting effect on the soil water characteristic curve (R2 > 0.99), which was suitable for fitting the water characteristic curve of the three types of soil under different bulk densities. The water movement parameters α and θs of the three soils were significantly negatively correlated with the initial bulk density (P < 0.01), and the water movement parameters α were significantly different from the initial bulk density of the black soil (P < 0.05). The water movement parameter θr of red soil was also significantly negatively correlated with the initial bulk density (P < 0.01), demonstrating a 10% reduction. A significant positive correlation was also found between the initial bulk density of black soil and soil water movement parameter n (P < 0.01). The initial bulk density of red and loess soil was negatively correlated with soil water movement parameter n, but the relationship was insignificant (P > 0.01). The variation range of water movement parameter n of the three soils under different initial bulk density treatments is small, and the variation range remains at approximately 0.1. The results can provide a reference for the acquisition of soil water movement parameters and hydrological process simulation under different types of soil and initial bulk densities.
ZHANG Pengfei,JIA Xiaoxu,ZHAO Chunlei,SHAO Ming’an . Effects of initial bulk density on soil water characteristic curve[J]. Arid Zone Research, 2022 , 39(4) : 1174 -1180 . DOI: 10.13866/j.azr.2022.04.18
| [1] | 雷志栋, 杨诗秀, 谢森传. 土壤水动力学[M]. 北京: 清华大学出版社, 1988. |
| [1] | [Lei Zhidong, Yang Shixiu, Xie Senchuan. Soil Water Dynamics[M]. Beijing: Tsinghua University Press, 1988.] |
| [2] | 林琳, 单博, 卢倩倩, 等. 模拟机械压实黑土持水特征与孔隙分布[J]. 东北林业大学学报, 2014, 42(12): 102-105. |
| [2] | [Shan Bo, Lu Qianqian, et al. Water retention characteristics and pore size distribution of black soil under simulated mechanical compaction[J]. Journal of Northeast Forestry University, 2014, 42(12): 102-105.] |
| [3] | 洪成, 尹殿胜, 陈俊英, 等. 容重对黏壤土土壤水分特征曲线的影响[J]. 节水灌溉, 2018(10): 5-8. |
| [3] | [Hong Cheng, Yin Diansheng, Chen Junying, et al. Impact of bulk density on soil water characteristic curve of clay loam[J]. Water Saving Irrigation, 2018(10): 5-8.] |
| [4] | 舒凯民, 樊贵盛. 基于质地的土壤水分特征曲线参数非线性预测[J]. 人民黄河, 2016, 38(7): 138-141, 145. |
| [4] | [Shu Kaimin, Fan Guisheng. The nonlinear prediction of soil water characteristic curve parameterbased on the soil texture[J]. Yellow River, 2016, 38(7): 138-141, 145.] |
| [5] | 李小刚. 影响土壤水分特征曲线的因素[J]. 甘肃农业大学学报, 1994(3): 273-278. |
| [5] | [Li Xiaogang. Factors affecting soil moisture characteristic curve[J]. Journal of Gansu Agricultural University, 1994(3): 273-278.] |
| [6] | Brooks R H, Corey A T. Hydraulic properties of porous media and their relation to drainage design[J]. Transactions of the ASAE, 1964, 7(1): 26-28. |
| [7] | 王改改, 张玉龙, 虞娜. 砂质土壤持水特性空间变异特征传递函数模型[J]. 辽宁工程技术大学学报(自然科学版), 2012, 31(3): 366-369. |
| [7] | [Wang Gaigai, Zhang Yulong, Yu Na. Spatial variability of water retention capability in aeolian sandy soil and its pedotransfer function[J]. Journal of Liaoning Technology University (Natural Science Edition), 2012, 31(3): 366-369.] |
| [8] | van Genuchten M Th. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils[J]. Soil Science Society of America Journal, 1980, 44(5): 892-898. |
| [9] | 王紫薇, 黄来明, 邵明安, 等. 青海高寒区不同土地利用方式下土壤持水能力及影响因素[J]. 干旱区研究, 2021, 38(6): 1722-1730. |
| [9] | [Wang Ziwei, Huang Laiming, Shao Ming’an, et al. Soil water holding capacity under different land use patterns in the Qinghai alpine region[J]. Arid Zone Research, 2021, 38(6): 1722-1730.] |
| [10] | 秦文静, 樊贵盛. 冲洪积平原土壤低吸力阶段水分特征曲线影响因素研究[J]. 节水灌溉, 2019(10): 38-42. |
| [10] | [Qin Wenjing, Fan Guisheng. Study on influencing factors of water characteristic curve of alluvial-diluvial plain soil at low suction stage[J]. WaterSaving Irrigation, 2019(10): 38-42.] |
| [11] | 李祥东, 邵明安, 赵春雷. 西北干旱区土壤水力参数空间变异与模拟[J]. 干旱区研究, 2019, 36(6): 1325-1332. |
| [11] | [Li Xiangdong, Shao Ming’an, Zhao Chunlei. Spatial variability and simulation of soil hydraulic parameters in arid Northwest China[J]. Arid Zone Research, 2019, 36(6): 1325-1332.] |
| [12] | Kalhoro S A, Xu X, Ding K, et al. The effects of different land uses on soil hydraulic properties in the Loess Plateau, northern China[J]. Land Degradation & Development, 2018, 29(11): 3907-3916. |
| [13] | 邵明安, 吕殿青, 付晓莉, 等. 土壤持水特征测定中质量含水量、吸力和容重三者间定量关系I. 填装土壤[J]. 土壤学报, 2007, 44(6): 1003-1009. |
| [13] | [Shao Ming’an, Lyu Dianqing, Fu Xiaoli, et al. Quantitative relationship between mass water content, pressure head and bulk density in determination of soil water retention characteristics I. Packed soils[J]. Acta Pedologica Sinica, 2007, 44(6): 1003-1009.] |
| [14] | 李卓, 吴普特, 冯浩, 等. 容重对土壤水分蓄持能力影响模拟试验研究[J]. 土壤学报, 2010, 47(4): 611-620. |
| [14] | [Li Zhuo, Wu Pute, Feng Hao, et al. Simulated experiment on effects of bulk density on soil water holding capacity[J]. Acta Pedologica Sinica, 2010, 47(4): 611-620.] |
| [15] | 付晓莉, 邵明安. SWCC测定过程产生的容重变化对SWCC参数的影响[J]. 水土保持学报, 2007, 21(3): 178-182. |
| [15] | [Fu Xiaoli, Shao Ming’an. Effect of changing bulk density during SWCC measurement on SWCC parameters[J]. Journal of Soil and Water Conservation, 2007, 21(3): 178-182.] |
| [16] | 吕殿青, 邵明安, 潘云. 容重变化与土壤水分特征的依赖关系研究[J]. 水土保持学报, 2009, 23(3): 209-212, 216. |
| [16] | [Lyu Dianqing, Shao Ming’an, Pan Yun. Dependent relationship between bulk density changes and soil water characteristics[J]. Journal of Soil and Water Conservation, 2009, 23(3): 209-212, 216.] |
| [17] | Nezhad M S, Nasab S B. Application of RETC model in determining the hydraulic functions of the unsaturated soil[J]. Researcher, 2017, 9(5): 54-57. |
| [18] | Li S, Li D F. Comparison of different approaches for estimating soil water characteristic curves from saturation to oven dryness[J]. Journal of Hydrology, 2019, 577(C): 123971. |
| [19] | 王子龙, 常广义, 姜秋香, 等. 黑土区土壤水分特征曲线模拟及模型优选[J]. 东北农业大学学报, 2018, 49(9): 36-43, 60. |
| [19] | [Wang Zilong, Chang Guangyi, Jiang Qiuxiang, et al. Simulation and models optimization of soil water characteristic curve inblack soil region[J]. Journal of Northeast Agricultural University, 2018, 49(9): 36-43, 60.] |
| [20] | Lu D Q, Shao M A, Horton R, et al. Effect of changing bulk density during water desorption measurement on soil hydraulic properties[J]. Soil Science, 2004, 169(5): 319-329. |
| [21] | 刘小宁, 隆瑞红, 罗珠珠, 等. 甘肃省典型土壤持水特性及影响因素研究[J]. 干旱地区农业研究, 2017, 35(1): 143-151. |
| [21] | [Liu Xiaoning, Long Ruihong, Luo Zhuzhu, et al. Research on water-holding capacity and related factorsin typical soils of Gansu Province[J]. Agricultural Research in Arid Areas, 2017, 35(1): 143-151.] |
| [22] | 张丽娜. 基于CT扫描技术的矿区不同容重土壤水力特性的预测研究[D]. 北京: 中国地质大学, 2020. |
| [22] | [Zhang Li’na. Prediction of Hydraulic Characteristics of Soils with Different Bulk Density Based on CT Technique[D]. Beijing: China University of Geosciences, 2020.] |
| [23] | 聂坤堃, 聂卫波, 马孝义. 离心机法测定土壤水分特征曲线中的收缩特性[J]. 排灌机械工程学报, 2019, 37(11): 978-985. |
| [23] | [Nie Kunkun, Nie Weibo, Ma Xiaoyi. Soil shrinkage property during soil water characteristic curvesbeing measured by centrifugal method[J]. Journal of Drainage and Irrigation Machinery Engineering, 2019, 37(11): 978-985.] |
| [24] | 高露, 张圣微, 赵鸿彬, 等. 退化草原土壤理化性质空间异质性及其对土壤水分的影响[J]. 干旱区研究, 2020, 37(3): 607-617. |
| [24] | [Gao Lu, Zhang Shengwei, Zhao Hongbin, et al. Spatial heterogeneity of soil physical and chemical properties in degraded grassland and their effect on soil moisture[J]. Arid Zone Research, 2020, 37(3): 607-617.] |
| [25] | 汪言在, 苏正安, 周明华. 北方农牧交错带表层土壤孔隙度特征及其影响因素[J]. 草业科学, 2020, 37(7): 1249-1258. |
| [25] | [Wang Yanzai, Su Zheng’an, Zhou Minghua. Characteristics and influence of topsoil porosity in the northern agro-pastoral ecotone[J]. Pratacultural Science, 2020, 37(7): 1249-1258.] |
| [26] | 孙中峰, 张学培, 刘卉芳, 等. 晋西黄土区坡面林地土壤持水性能研究[J]. 干旱区研究, 2004, 21(4): 343-347. |
| [26] | [Sun Zhongfeng, Zhang Xuepei, Liu Huifang, et al. Study on the water-conserving capabilities of soils under the sloped woodlands in the loess area in west Shanxi Province[J]. Arid Zone Research, 2004, 21(4): 343-347.] |
| [27] | 刘思春, 高亚军, 王永一, 等. 土壤水势测定方法的选择及准确性研究[J]. 干旱地区农业研究, 2011, 29(4): 189-192. |
| [27] | [Liu Sichun, Gao Yajun, Wang Yongyi, et al. Preliminary study on selection and accuracy of different methods for measurement of soil water potential[J]. Agricultural Research in Arid Areas, 2011, 29(4): 189-192.] |
/
| 〈 |
|
〉 |