The composition, distribution and quantity of soil microorganisms might be influenced by landform, existence of biological soil crust and organic matter contents.
土壤微生物的数量变化特征与生物结皮的类型、分布以及土壤有机质含量等因子有一定相关性。
Organic matter often influences the effect of cement solidified soil, humic acid as the main composition of organic was chosen to study the effect on solidification.
针对有机质对疏浚淤泥固化处理效果产生的影响，研究有机质的主要成分腐殖酸对水泥固化的影响。
Dyes and their intermediates have a wide range variety, with a high concentration, color depth, organic matter complex composition, toxic, and poor characteristics of bio-degradable.
染料及其中间体种类繁多，具有浓度高、色度深、有机物成分复杂、毒性大、生物降解性差等特点。
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