Surface and subsurface soil changes of the basic agreement.
表层土壤和亚表层的变化规律基本一致。
The amount of microorganism in topsoil was about 3 times higher than that in subsurface soil.
土壤表层微生物数量约为底层数量的3倍。
Theroot infection rate was higher in top soil than in subsurface soil in Ash and Larch plantation.
水曲柳和落叶松林分表层的侵染率高于亚表层的侵染率。
Lateral routing flow of surface water and subsurface soil water become necessary in land surface simulation in mountainous regions.
地表水以及土壤水的侧向流动成为山区水文过程必须考虑的部分。
Undisturbed soils samples obtained from surface and subsurface soil layers under different forests were used to make thin sections and study micro-morphological characteristics.
分别采制上述不同土壤类型或林型下的土壤表层和表下层的原状土祥，制取土壤薄片，进行土壤微形态学比较研究。
The development and decline of subsurface flow in soil changing slope due to rainfall infiltration were studied with numerical analysis.
用数值解析研讨了降雨渗透变化坡面的地下水流的进展和衰退过程。
N in the main form of nitrate through the subsurface runoff was put into the stream, the vegetation-covered riparian had high on the nutrient in the soil water.
溪流相邻高地通过地下径流向溪流中N素的输入，主要是以硝态氮的形态通过土壤水的输入；
The subsurface erosion of loess is a critical problem that causes the loss of water and soil in loess area.
黄土潜蚀是黄土地区水土流失的重要原因，同时潜蚀作用形成的黄土暗穴是黄土地区主要工程地质问题之一。
Denitrification in subsurface is the important source of N2O emission from soil. It is also a key factor of affecting NO3 content of shallow groundwater.
底层土壤的反硝化作用是土壤排放N_2O的重要来源，同时也是影响浅层地下水硝酸盐含量的重要因素。
Denitrification in subsurface is the important source of N2O emission from soil. It is also a key factor of affecting NO3 content of shallow groundwater.
底层土壤的反硝化作用是土壤排放N_2O的重要来源，同时也是影响浅层地下水硝酸盐含量的重要因素。
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