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近来,由松毛虫危害引起的松树的衰退,其保土机能怎样,人们提出了不少疑问.由于松林上层的松树枯死,引起林地植被的变化,这便引起了松树根系固土力发生变化,同时枯死松树本身根系的固土力亦急剧变化.因此松林根系的固土力应看作为以上两种变化相互作用的结果.由于植物根系能固住土壤,因而才能支撑住它的地上部分.一般植物的固土力相当于地上部分对所承受外力的抵抗力,即根系的地上部分的支撑力.其大小为地上部分重量的80—100倍.根系固土力因根系组织形态、分布特性不同而有所不同.
Recently, pine trees caused by pine caterpillar damage caused by the decline, how its soil function, people raised a lot of questions.As the upper pine pines died, causing changes in woodland vegetation, which will cause the pine root system of soil strength changes, At the same time, the solid soil strength of the dead pine root system itself also changes drastically, so the soil fixing force of the pine forest root system should be regarded as the result of the interaction between the above two kinds of changes, because the plant root system can hold the soil and thus can support its aerial part. The soil solid strength of a plant is equivalent to the resistance of the aerial part to the external force, that is, the supporting force of the aerial part of the root system, and its size is 80-100 times the weight of the aerial part.The root soil solidifying force varies according to the root tissue morphology and distribution characteristics And different.