混交林和纯林是森林的两种不同组成形式,它们各自有着自己的特点和优缺点,对自然条件和经营措施也有着不同的要求。所谓纯林,是指只有一个树种组成的林分。在人工林中,完全只有一个树种组成的纯林比较普遍;而在天然林中,完全只有一个树种组成的纯林是非常少的。天然林中的纯林是指某一个树种占绝对优势的林分。纯林和混交林比较起来,虽然缺点不少,但也 Mixed forests and pure forests are two different forms of forests, each with its own characteristics, advantages and disadvantages, and different requirements on natural conditions and management practices. The so-called pure forest, refers to the composition of only one tree stand. In a plantation, a pure forest with only one tree species is more common; in a natural forest, there is very little pure forest with exactly one tree species. Pure forest in natural forest refers to the absolute advantage of a species of forest stand. Pure forest and mixed forest, although a lot of shortcomings, but also