论文部分内容阅读
现在,研讨会就要结束了,根据现场看到的,大家在会上讲的,结合自己的看法,就以下三个方面的问题讲些意见。1 对天然阔杂林实施有限面积的皆伐,是三十多年来实践经验的总结,是一种较好的选择森林采伐方式,大体不外皆伐、择伐和渐伐三种。诸多方式,不宜笼统地评说其优劣,只能根据具体林分和立地条件来选用最适合的方式。从总体上看,秦巴山区是水源
Now, the seminar is coming to an end. Based on what we saw on the site and what we were talking about at the meeting and in light of our own opinions, we would like to make some comments on the following three issues. 1 The limited area of clear cutting of natural broad-leaved forests is a summary of more than 30 years of practical experience. It is a better choice for forest harvesting methods, but in general there are three types of clear cutting, selective cutting and gradual cutting. Many ways, it is not appropriate to generally comment on its merits, only according to the specific stand and site conditions to choose the most suitable way. Overall, Qinba Mountain is a source of water