In worm-free woodlands, leaves pile up in drifts on the forest floor. Trees and shrubs in wormless places depend on litter for food.
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。
The increased N input may influence C and N turnover during litter decomposition process by changing chemical and microbial environment in forest floor.
外源氮输入可以通过改变土壤中的化学和微生物环境影响凋落物分解过程中的碳氮周转过程。
There were no detailed studies on litter and forest floor of Populus davidiana and Fraxinus mandshurica in this region.
针对帽儿山林区的水曲柳、山杨两种主要林分类型凋落物以及林下凋落物层进行细致的研究较少。
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