first, soil erosion modulus can be estimated by using water erosion model, and the maps of soil density and soil horizon thickness can be derived from soil detailed survey data.
首先,采用侵蚀预报的数学模型来估算土壤侵蚀量,用土壤详查资料编制土层厚度和土壤容重图;
if soil horizon temperature is higher than before, pile capacity will be more strong, pile compression and the settlement of pile top will be smaller;
提出土层温度越高,单桩的承载力越大,桩体的压缩量越小,桩顶的沉降越小;
the soter attribute database consisted of four parts; the map delineation information table, the landscape environment table, the typical pedon table and soil horizon table.
soter属性数据库包括图斑信息表、景观环境数据表、典型单个土体数据表和土壤发生层数据表。
the relationship between soil moisture in various soil horizon and senescence, and irrigation efficiency of different irrigation scheme have been discussed.
文中还就不同层次土壤水分状况与衰老的关系及不同灌水方案的灌溉效益进行了分析。
direction elements of including au, u ore information are enriched in cemented soil horizon of the top of accumulated layer, which has not blocked the most elements.
金、铀含矿信息的直接指示元素主要富集在钙积层上方的弱胶结层中,钙积层对大部分元素没有「隔挡」作用。