通过对青海主要土壤类型剖面的有机质、机械组成、阳离子交换量三者之间的关系分析。
The relationship was analysised between organic matter, soil granular composition and cation exchange capacity(CEC) in Qinghai major soil types.
土壤颗粒组成、容重、有机质、孔隙率影响土壤持水性能。
Then, the bulk density, porosity, the type of pore, particle constitute and organic carbon in the soil affected the soil moisture diffusivity.
从而为利用深海沉积有机质碳同位素组成研究古气候变迁提供了依据。
Such a study provides a basis for understanding palaeoclimate shifts by investigation of organic carbon isotopic composition in the deep sea sediments.
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