地表温度和土壤颗粒组成对抗剪强度的影响  

EFFECTS OF SURFACE TEMPERATURE AND SOIL PARTICLE COMPOSITION ON SHEER STRENGTH

作　　者：逯海叶[1] 李平[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018

出　　处：《内蒙古农业大学学报（自然科学版）》2005年第1期75-78,共4页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10262001);科技部重大基础研究前期研究专项项目(2002ccc03400)

摘　　要：　本文根据内蒙古阴山北部农牧交错带3个试验场地(耕地、普通草地、围封草地)的地表温度、土壤颗粒组成、地表土壤抗剪强度实地观测数据,建立了地表温度与地表土壤抗剪强度之间的定量关系模型.并探讨了土壤颗粒组成对土壤抗剪强度的影响。结果表明,地表土壤抗剪强度随温度的升高而呈线性减小的规律,土壤颗粒级配越好,粘粒含量越多,土壤的抗剪强度越大。Basing on the determination of ground surface soil's temperature、particle composition and sheer strength in three study plots (plough land、common meadow、inclosed meadow)on type zones of the farming –pastroral ecotone in the North of Mount Yin of Inner Mongolia, quantitative relationship model between surface temperature and surface soil sheer strength was set up and the effect of soil particle composition on surface soil sheer strength was discussed. Results indicatesd that the sheer strength of the surface soil is,in general case ,linearly decreased with ground temperature increase. The more well-distributed assortment of particle is and the more clay content is ,the higher the surface soil sheer strength is.

关 键 词：土壤颗粒组成 抗剪强度 地表温度 地表土壤 农牧交错带 试验场地 观测数据 关系模型 颗粒级配 粘粒含量 内蒙古 草地 北部 围封 

分 类 号：S153.61[农业科学—土壤学] TU432[农业科学—农业基础科学]