Because of the shading of wood leaf layers and litter fall, soil evaporation and the range of soil moisture contents changing were small under forest canopy.
受冠层覆盖及植被根系影响，随着树干距离的增加，土壤含水率呈减少趋势。
His strange habit makes sense when you consider that he's an environmental scientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road.
他是一位研究如何减少垃圾的环境科学家，其中包括研究减少垃圾车行驶时掉下来的东西，当你考虑到这一点，自然就能明白他为什么会养成这种奇怪的习惯了。
Using large deployable surfaces to increase the drag on these objects so they fall to Earth rapidly is one possible solution to the space litter problem.
为了解决太空垃圾的问题，科学家们正考虑在这些垃圾的表面安装风帆，增加空气阻力，使它们更快地坠毁在地面上。
By investigating many forest types in 4 different areas, we found that there are great differences in litter-fall in these areas which are influenced by geographical locations and forest types.
对4个地区一些典型林型凋落物进行研究表明森林年凋落量受地理位置和森林群落类型影响而存在明显差异。
The study on the same kind of forest type distributing in different regions showed that the litter-fall in low latitude is always larger than that in higher latitude.
对不同地点的同一林型的研究表明，分布在纬度低的地区森林年凋落量通常大于分布在纬度高的地区。
The study on the same kind of forest type distributing in different regions showed that the litter-fall in low latitude is always larger than that in higher latitude.
对不同地点的同一林型的研究表明，分布在纬度低的地区森林年凋落量通常大于分布在纬度高的地区。
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