表层土壤已差不多完全给冲走了。
表层土壤年总热通量为-0。
此外，表层土壤含水量也是一个重要影响因素。
Besides, the moisture of surface soil is also an important factor.
飘泼大雨能很快地冲走那里的平坦开阔的表层土壤。
Heavy rain can quickly wash away the rich top soil on flat, open land.
这部分碱化土壤一般表层碱化度较高，而巨碱化、盐化特点同时存在。
The soil surface are commonly found with a high degree of alkalization.
而在土壤表层水盐变化规律这方面，仍存在研究空间。
However, there exists an amount of space on the study of soil surface variation.
这也是形成火星表层无菌土壤的原因。
It may also be responsible for sterilizing the red planet's top layers of soil.
这也是形成火星表层无菌土壤的原因。
It may also be responsible for sterilizing the red planet's top layers of soil.
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