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在过去的几十年里,对基于对历史上自然干预动力的理解的森林经营方法的开发兴趣日益增加。这一方法的理由是,有利于景观组成和林分结构及自然生态系统的经营活动也应当保持生物多样性和基本的生态功能。在火灾居支配地位的景观,用森林经营替代火灾这一方法只在当前火频率和未来火频率此工业化以前的火频率低得多的情况下才有可能。通过将当前火频率、未来火频率与在加拿大北方森林中再现的森林火灾历史的比较,我们讨论了这一问题。对于多块研究地而言,当前火频率和2倍CO_2及3倍CO_2情形下模拟的未来火频率都低于过去火频率,这暗示着森林经营可以被用于重建受控于火灾的、工业化以前景观的林木年龄结构。但对目前的同龄林经营来说,还有一些重要的限制因子。
Over the past few decades there has been an increasing interest in the development of forest management practices based on an understanding of the power of natural intervention in history. The rationale for this approach is that the activities that contribute to landscape composition and stand structure and natural ecosystems should also maintain biodiversity and basic ecological functions. In a landscape dominated by fires, the alternative to using fire in forest management is only possible if the current and future fire frequencies are much lower for the pre-industrial fire. We discuss this issue by comparing current fire frequencies, future fire frequencies with the history of forest fires reproduced in the forests of northern Canada. For many studies, the simulated future fire frequencies for both current and two-fold CO 2 and three-fold CO 2 are lower than those for the past, suggesting that forest management can be used to reestablish fire-controlled, industrialized Forest age structure of previous landscapes. However, for the current management of the same age forest, there are some important limiting factors.