求翻译：目前国内外关于森林植被水源涵养及水土保持功能的研究很多，在学术界普遍认为森林的水源涵养作用主要集中在森林的林冠层、林下灌草层、林下枯枝落叶层、林地土壤层四个层面上。是什么意思？

At home and abroad on water conservation and soil conservation functions of forest vegetation in the academic community generally agreed that water conservation role of forests mainly in the forest canopy layer, shrub and grass layer, the understory litter layer, soil layer four levels.

At home and abroad on forest vegetation water resource conservation and the conservation of soil and water feature is a lot of research in academia, the general view that forest water resource conservation role was mainly concentrated in the forest canopy, the slam grass layer, Layer The leaves with

At present domestic and foreign are very many about the forest vegetation water source self-control and the conservation of water and soil function research, in the academic circles thought generally the forest the water source self-control function mainly concentrates in under the forest forest cro

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At present domestic and foreign are very many about the forest vegetation water source self-control and the conservation of water and soil function research, in the academic circles thought generally the forest the water source self-control function mainly concentrates in under the forest forest cro