But current forest management practices, including fire suppression, often create forests full of trees of uniform age, which are particularly susceptible.
但是包括扑火在内的现有林务实践,经常创造年龄段均一的树林,这种树林对于环境变化是很敏感的。
Yet after her death at age 100, Grace Groner left Lake Forest College a gift of $7 million to be used for scholarships.
然而当格蕾斯•格鲁诺(Grace Groner)以100岁高龄去世后,她留给森林湖学院(Lake Forest College)700万美元作奖学金之用。
How to manage optimally and make use of the resource will play an important role in sustained-yield forest management in Heilongjiang province and determining the age of harvest cutting is the key.
如何合理地经营利用好这部分资源,对该省森林永续经营利用起到重要作用,其主伐年龄的确定是关键问题。
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