吉林省低山丘陵区土壤抗冲抗剪性研究  

Performances of Soil Anti-Scourability and Anti-Shear Strength of the Low Mountains and Hilly Regions of Jilin Province

作　　者：张瑜[1] 王佩将[1] 许晓鸿[1] 芦贵君[1] 

机构地区：[1]吉林省水土保持科学研究院,吉林长春130033

出　　处：《中国水土保持》2015年第1期41-44,69,共4页Soil and Water Conservation in China

基　　金：水利部公益性行业专项(201401025);吉林省科技发展计划项目(20120409)资助

摘　　要：土壤抗冲性和抗剪性是土壤抗侵蚀性能的重要方面,研究土壤抗冲性和抗剪强度有助于揭示土壤侵蚀规律。以吉林省东辽县杏木小流域为研究区,在蒙古栎林地、杨树林地、落叶松林地、大豆地、玉米地、竹节梯田果园地设置样地,采集林地与坡耕地土壤样品,进行土壤的抗冲性、抗剪性及其影响因素研究,结果表明:林地的土壤抗冲性与抗剪性均好于坡耕地,土壤抗冲刷系数与土壤非毛管孔隙度呈显著负相关,与>0.25 mm水稳性团聚体含量呈极显著正相关;土壤抗剪强度与土壤容重、总孔隙度、非毛管孔隙度、>0.25 mm水稳性团聚体含量、初始入渗率、稳定入渗率、平均入渗率的相关性均未达显著水平。Soil anti-scourabilily arid anti-shear strength are the important aspect of the performance of anti soil erosion. To study soil anti-scourability and anti-shear strength contribute to reveal ihe law of soil erosion. Taking Xingmu small watershed of Dongliao County in Jilin Province as a studied area, the paper set up sample plots in the woodlands of Mongolia oak, poplar and dahurian larch and slope farmland of soybeans,maize and terraced orchards, collected the soil samples of woodland and slope farmland and studied the soil anti-scourability, antishear strength and its affecting factors. The outcomes show that the performances of soil anti-scourability and anti-shear strength of woodland are all better than that of slope farmland. The coefficient of soil anti-scourability and non-capillary porosity show remarkable negative correlation. The coefficient of soil anti-scourability and >0. 25 mm water stable aggregates content shows extremely remarkable positive correlation. The correlation between soil anti-shear strength and soil bulk density, total porosity,non-capillary porosity, >0. 25 mm water stable aggregates content, initial infiltration rate, limiting infiltration rate and average infiltration rate are all not remarkable.

关 键 词：低山丘陵区 抗冲性 抗剪强度 影响因素 

分 类 号：S157[农业科学—土壤学]