zonal soils 中文意思是什麼
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Spatial variation of organic matter in horizontal zonal soils in china
我國水平地帶性土壤中有機質的空間變化特徵 -
Collapsible loess is one of the most widely ranged zonal soils in our country. it covers nearly 60 % of the total area of loess in china, which mainly distributes in the middle and downstream of yellow river
我國濕陷性黃土的分佈面積約占黃土分佈總面積的60左右，大部分分佈在黃河中游地區，是我國一種主要的，分佈較廣的區域性土。
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