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中华人民共和国建国后的几十年里,仅是森林历史长河的瞬间,它既不能发生森林植被地带性的更替,更不会发生寒热带不同树种的大量南迁或北迁等演变过程。但是由于社火主义制度的优越,科学技术的进步,认识水平的不断提高等,使人们对于森林的培育和利用,正在朝着有利于人类的方向演变。另一方面,也有一些不利因素。诸如政策的失误,森林区的过量采伐,培育后备森林资源缓慢等,也在伴随着正常的演变过程,起着阻碍性作用。上述这些有利与不利因素,综合作用于森林的结果,导致森林发生着与地质时期或历史时期迥然不同的新变化。
In the decades following the founding of the People’s Republic of China, it was only the moment when the forest had a long history. Neither the occurrence of regional changes in forest vegetation nor the evolution of a large number of southward or northward migration of different tree species in the cold-tropics occurred. However, due to the superiority of the socialist system of fire, the progress of science and technology, and the continuous improvement of the level of awareness, people are evolving toward the benefit of mankind in the cultivation and utilization of forests. On the other hand, there are some disadvantages. Such as policy mistakes, excessive harvesting in the forest area, cultivation of reserve forest resources is slow, but also with the normal evolutionary process, play a blocking role. These combined advantages and disadvantages, combined with the results of forests, lead to new and very different changes in the forest from the geological or historical periods.