论文部分内容阅读
温室效应对植被的影响是一个无法回避的极其复杂的问题。有资料表明,在最近几十年里,树木的生长速度加快了,法国森林的生产率从每年8000万立方米(木材)增加到了每年9000万立米(木材),仅仅用造林活动的开
The impact of the greenhouse effect on vegetation is an extremely complex issue that can not be avoided. Data show that the growth of trees has accelerated in recent decades and that the productivity of French forests has increased from 80 million cubic meters (timber) per year to 90 million cubic meters (wood) per year, with only open afforestation activities