次生林是由原始林经过人为和自然因子多次反复作用(主要是破坏作用),从而形成的一种在次生演替过程中具有自身特点的森林植被。这种植被虽然具有一定的森林环境,但经济和生态效益较低。研究其演替规律和经营技术,对林业的发展具有重要的学术和实用价值。特别是对六盘水这种缺材少林而又水土流失极为严重的地区更为重要。 The secondary forest is a kind of forest vegetation that has its own characteristics in the process of secondary succession because the primary forest repeatedly interacts (mainly destructively) with human and natural factors. Although this kind of vegetation has a certain forest environment, its economic and ecological benefits are low. Studying its succession rules and management techniques has important academic and practical value for the development of forestry. In particular, Liupanshui, an area where materials are scarce and soil erosion is extremely serious, is even more important.