作　　者： (周明涛）; (杨森）; (秦健坤）; (熊峰）; (王泽光）; (许文年）;

机构地区： 三峡大学三峡库区生态环境教育部工程研究中心,湖北宜昌443002

出　　处： 《土壤通报》 2017年第4期988-995,共8页

摘　　要： 土壤裂隙的发育是土壤自身内在属性在外界条件变化时综合作用的结果,与土壤物理、化学及生物性质息息相关,对农田水肥蓄积、坡体稳定、地下水污染等的危害很大。本文首先阐释了土壤裂隙的内涵及其与孔隙之间的区别与联系,而后从形成机制的角度对土壤裂隙进行了分类,并归纳总结了水平裂隙和垂直裂隙的描述方式及裂隙的评价指标体系,接着对干缩裂隙发育的外因及内因做了较深入的讨论,最后对土壤裂隙日后研究工作的重点提出了建议,旨在为土壤裂隙研究提供有益借鉴。 Soil crack is formed under the interaction between intrinsic soil properties and environment conditions, and closely linked to soil physical, chemical, biological properties. It can affect the transfer of water and fertilizer in farmland. This paper classified soil crack based on its formation mechanism. In addition, the evaluation indices of soil cracks were introduced. Finally the influencing factors of desiccation cracks were discussed and future research focus was proposed.

关 键 词： 土壤裂隙 孔隙 评价 影响因素