low quality forest 低质低效林
transformation of low-quality forest 低质林改造
low quality and benefit forest 低质低效林
low quality and yield forest 低质低产林
The results above provide a scientific reference for impact of logging on function of soil and litter and low-quality forest management.
以上研究结果可为采伐对土壤和枯落物功能影响的研究和低质林经营提供科学参考。
There are large areas low-quality forest with low canopy density, low productivity because of over-harvesting operations and natural disasters.
由于多次过量采伐干扰及自然灾害，小兴安岭林区形成大面积郁闭度较低、生产力低下且林相衰败的低质林。
In order to restoring the original forest structure and function, improving the quality of forest stands, it is necessary to transform low-quality forest.
为了改善林分质量、恢复原有森林结构和功能，有必要对低质林分进行改造。
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