在没有蚯蚓的林地里，落叶成堆地堆积在森林的地表，树木和灌木丛依靠枯枝落叶层生长。
In worm-free woodlands, leaves pile up in drifts on the forest floor. Trees and shrubs in wormless places depend on litter for food.
当木蚁死亡时，寄生菌从其上破头而出，伸出孢子囊，孢子会在晚上播撒到森林地表。
Once an ant has died, the fungus sprouts from its head and produces a pod of spores, which are dropped at night on to the forest floor.
覆盖在森林地表的一层薄土很容易被冲走。
The thin soil that covers the forest floor can be easily washed away.
以荒山为对照，对辽西半干旱低山丘陵区人工林地表层土壤水文效应进行了初步研究。
In comparison with barren slope, a pilot study of hydrology effect of artificial woodland surface soil in semi-arid low mountainous upland region of western Liaoning province was carried out.
该文通过对森林火蔓延模型的研究，建立了一种使用产生式原则的多模型森林地表火蔓延预测系统。
Through the study on the model of forecasting forest fire spreading, this research built a multi-model predicting system based on the production rule.
酸雨对森林地表层的土壤来说，它改变了原来的pH值'。
When acid rain falls on forest floors, it changes the ingredients - the 'PH level' - of the soil.
结果表明：坡耕地、杉木林地的次降雨地表径流量、地表径流侵蚀模数与坡度、降雨量、降雨强度、植被盖度等相关显著。
The results showed that the correlation between total surface runoff and erosion modulus with land use types and those influence factors above was significant.
布设机械沙障可使退化梭梭林地表粗糙度增大，林内近地面层风速、输沙量显著下降。
By setting up mechanical sand barriers on degenerated Haloxylon ammodendron woodland, the roughness of woodland increased; the wind speed an.
应用自行研制的“多坡段固相材料火蔓延实验台”，模拟森林地表火的蔓延过程，对变坡度情况下森林地表上坡火行为规律进行了实验研究。
In this paper, a solid phase material fire experimental bed, which has more slope segments, has been used to simulate upslope forest surface fire.
在这个自然生长的地方，不断伸展的树枝架在上面截断了阳光，阻碍了森林地表植物的生长。
In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor.
系列旋转型割草机主要适用于草场、灌木林地的割草、清理以及地表不平整牧场的更新、改造等作业。
The Model 9G machine is mainly used for cutting and cleaning the grasses on in on the shrubby and grass land, renovating or reforming the ranch.
系列旋转型割草机主要适用于草场、灌木林地的割草、清理以及地表不平整牧场的更新、改造等作业。
The Model 9G machine is mainly used for cutting and cleaning the grasses on in on the shrubby and grass land, renovating or reforming the ranch.
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