水土保持学报2017，Vol.31Issue(4)：86-92,7.DOI:10.13870/j.cnki.stbcxb.2017.04.015
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
Effect of Gravel Content and Particle Size on Soil Infiltration in Low Mountainous Upland Region of Western Liaoning Province
摘要
Abstract
The study based on laboratory soil-column experiments to research the effects of different gravel content and particle size on soil infiltration process and the applicability of the traditional soil infiltration model by four models.The results showed that the cumulative infiltration of soil decreased with the increase of gravel content,and the change of the wetting front in soil column was reduced and gradually tend to be level off with the increase of cumulative infiltration.When the gravel content was less than 20％,the cumulative infiltration rate increased with the increase of the particle size,and there was no difference betwee n the cumulative infiltration and wetting front with time when the gravel content increases to a certain value (20％～ 30％).There was a good linear relationship between the amount of cumulative infiltration and wetting front distance.Green-Ampt model,General model,Horton model and Kostiakov model were used to fit the relationship between infiltration rate and infiltration duration.Horton model showed best fitting effect when the gravel content was 5％,but worst in 10％～30％,while general model was more applicable,the fitting effect of other models varied with gravel content and particle size.关键词
土壤入渗/砾石/入渗模型/累积入渗量/辽西低山丘陵区Key words
soil infiltration/gravel/infiltration model/cumulative infiltration/low mountainous upland region of western Liaoning Province分类
农业科技引用本文复制引用
吕刚,王婷,王韫策,翟景轩,李叶鑫..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):86-92,7.基金项目
国家自然科学基金项目“干旱胁迫下科尔沁沙地主要防护林树种CNP化学计量特征及其影响机制”(31400613) （31400613）
