Infiltration models for different textures of water-repellent soils
Song Hongyang1, Li Yi1,2, He Chansheng3
1. College of Water Resources and Architecture Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; 2. Institute of Water-saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, Shaanxi 712100, China; 3. Research School of Arid Environment & Climate Change, Lanzhou University, Lanzhou, Gansu 730000, China
Abstract：In order to study the infiltration characteristics and mechanism in water-repellent soils deeply, one-dimension vertical infiltration experiments were conducted on water repellent soils with four different textures. The accumulation infiltration, infiltration rate and wetting front length were analyzed by using diagram when the infiltration was in progress, the soil moisture profiles were examined as well. The correlation between infiltration rate and time was predicted by means of four different models and compared with the measurements. The relationship between accumulation infiltration and wetting front length was described by a linear function. The results showed that for those hydrophobic soils there is a time instance at which the infiltration characteristic is changed. Thus the infiltration process can be divided into two stages: fore-stage and post-stage. The Kostiakov equation can describe the i-t relationship of hydrophilic soils and that at the fore-stage of hydrophobic soils very well, compared with the other models. Different hydrophobic soils show relatively large difference in infiltration rate during the post-stage of infiltration. The correlation between wetting front depth and accumulation infiltration can be described by a linear model in each of the two stages for hydrophobic soils, respectively. An effect, which the soil moisture in the upper-layer of hydrophobic soil is higher than hydrophilic soil,was observed.
宋红阳, 李毅,, 贺缠生. 不同质地斥水土壤的入渗模型[J]. 排灌机械工程学报, 2013, 31(7): 629-635.
Song Hongyang, Li Yi,, He Chansheng. Infiltration models for different textures of water-repellent soils. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(7): 629-635.
[1]李毅,商艳玲,李振华,等. 国内外土壤斥水性研究进展[J]. 农业机械学报,2012,43(1):68-73. Li Yi, Shang Yanling, Li Zhenhua, et al. Advance of study on soil water repellency[J]. Transaction of the Chinese Society for Agricultural Machinery, 2012,43(1):68-73.(in Chinese)[2]Doerr S H, Shakesby R A, Walsh R P D. Soil water repellency: Its causes, characteristics and hydro-geomorphological significance[J]. Earth-Science Reviews, 2000, 51(1/2/3/4):33-65.[3]Wang Z, Wu Q J, Wu L, et al. Effects of soil water repellency on infiltration rate and flow instability[J]. Journal of Hydrology, 2000,231/232:265-276.[4]Carrillo M L K, Letey J, Yates S R. Unstable water flow in a layered soil: I. Effects of a stable water-repellent layer[J]. Soil Science Society of America Journal, 2000,64(2):450-455.[5]Clothier B E, Vogeler I, Magesan G N. The breakdown of water repellency and solute transport through a hydrophobic soil[J]. Journal of Hydrology, 2000,231/232:255-264.[6]杨邦杰, Blackwell P S, Nicholson D F. 斥水土壤中的水热运动规律与数值模型[J]. 土壤学报, 1996,33(4):351-359. Yang Bangjie, Blackwell P S, Nicholson D F. Modeling heat and water movement in a water-repellent sandy soil[J]. Acta Pedologica Sinica,1996,33(4):351-359.(in Chinese)[7]刘春成,李毅,郭丽俊,等. 微咸水灌溉对斥水土壤水盐运移的影响[J]. 农业工程学报,2011,27(8):39-45. Liu Chuncheng, Li Yi, Guo Lijun, et al. Effect of brackish water irrigation on water and salt movement in repellent soils[J]. Transactions of the CSAE, 2011,27(8):39-45.(in Chinese)[8]Dekker L W, Ritsema C J. Uneven moisture patterns in water repellent soils[J]. Geoderma, 1996,70(2/3/4):87-99.[9]刘春成,李毅,任鑫,等. 四种入渗模型对斥水土壤入渗规律的适用性[J]. 农业工程学报,2011,27(5):62-67. Liu Chuncheng, Li Yi, Ren Xin, et al. Applicability of four infiltration models to infiltration characteristics of water repellent soils[J]. Transactions of the CSAE, 2011, 27(5):62-67.(in Chinese)[10]Goebel Marc-O, Woche S K, Bachmann J. Quantitative analysis of liquid penetration kinetics and slaking of aggregates as related to solid-liquid interfacial properties[J]. Journal of Hydrology, 2012,442/443:63-74.[11]Dekker L W,Ritsema C J.Wetting patterns and moisture variability in water repellent Dutch soils[J]. Journal of Hydrology,2000,231/232: 148-164.[12]陈俊英,吴普特,张智韬,等. 土壤斥水性对含水率的响应模型研究[J]. 农业机械学报,2012,43(1):63-67. Chen Junying, Wu Pute, Zhang Zhitao, et al. Response models for soil water repellency and soil moisture[J]. Transaction of the Chinese Society for Agricultural Machinery, 2012,43(1):63-67.(in Chinese)[13]陈俊英,张智韬,Leionid Gillerman,等.影响土壤斥水性的污灌水质主成分分析[J].排灌机械工程学报,2013,31(5):434-439. Chen Junying,Zhang Zhitao,Leionid Gillerman, et al. Analysis of principal components of wastewater affecting soil water repellency[J].Journal of Drainage and Irrigation Machinery Engineering,2013,31(5):434-439.(in Chinese)
