抚育间伐是一项培育速生丰产林的重要措施,而间伐强度又是抚育间伐最关鍵的一个技术指标。间伐强度是否合理决定着间伐效果的好坏。确定间伐强度,由于基础不同,分为定性间伐和定量间伐两大类。定性间伐是以林木分级为基础,按间伐方法划分间伐木和保留 Thinning of tending is an important measure to cultivate fast-growing and high-yielding forests, and thinning intensity is the most important technical index for tending thinning. Thinning intensity is reasonable to determine the effect of thinning good or bad. To determine the thinning intensity, due to different basis, divided into qualitative thinning and quantitative thinning two categories. Qualitative thinning is based on tree grading and is based on the thinning method for deforestation and conservation