... climatic amelioration 气候改良 forest amelioration 森林改良 noise amelioration 环境保护 ; 改善噪音滋扰 ...
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forest land amelioration [林] 林地土壤改良
forest soil amelioration [林] 森林土壤改良
Withered branches and dead leaves in the forest play an important role in amelioration of soil, interception of rainfall, reduction of splashed erosion of raindrop and control of soil loss.
林地枯落物对改良土壤、截持降雨、减少雨滴溅蚀、防止水土流失等都具有重要作用。
The results indicated that the effect of mixed masson pine and oak forest on soil amelioration was the best, that of grass was the second and the pure masson pine forest was the worst.
结果表明：松栎混交林对土壤的改良效果最好，草地次之，马尾松纯林则较差。
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