根据土管成因不同将其分为四种类型，即土壤动物活动导致的土管、植物根系形成的土管、土壤裂隙形成的土管和土壤水分运动形成的土管。
The pipes can be divided into four kinds based on their cause of formation, namely pipes formed by the animals, by the roots of plants, by the cracks of soil and by the soil water movement.
在未来，上海永清将主要精力用于从事场地及耕地的土壤污染治理业务，逐步形成形成完整的土壤修复产业链。
In the future, Yonker Shanghai will be mainly used to engage in land and farmland soil pollution control business, and gradually formed a complete industrial chain of soil remediation.
土壤-植被系统是土壤和植被在它们形成和演化的过程中形成了一个综合体，两者之间联系密切，相互作用，任何一个因子的变化都会对其它因子产生相应当影响。
Siol-vegetation system is a syntheses in their course of evolution, they have osculating connection and reciprocity, if one of them is changed one will have same result in another.
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