最严重的掠夺行为是采伐森林,导致如今海地的森林覆盖率只有2%。
The greatest predation was the deforestation of Haiti, so that only 2 percent of the country is forested today.
巴西说在亚马孙河的采伐森林在2007年最后五个月中到达了一个记录率。
Brazil said that deforestation in the Amazon reached a record rate in the last five months of 2007.
该机主要用于经济林、观赏林苗木的挖掘移栽和胸径12公分以下的半成材林、淘汰林的移栽与采伐,能够保持土球的完整,便于运输,提高成活率。
The machine can adapt small wood and view and admire little trees remove, below 12 centimetres trees remove. And can protect the earth full, transportation convenience, and good survive.
影响油锯择伐作业中保留木损伤率的因素很多,经过分析可知采伐强度、林分密度和采伐木单株材积是影响保留木损伤率的主要因素。
Selective cutting intensity, stand density and felling tree volume per stem were considered as the major influencing factors by analyzing related researches at home and abroad.
影响油锯择伐作业中保留木损伤率的因素很多,经过分析可知采伐强度、林分密度和采伐木单株材积是影响保留木损伤率的主要因素。
Selective cutting intensity, stand density and felling tree volume per stem were considered as the major influencing factors by analyzing related researches at home and abroad.
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