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以陕西省永寿县刺槐人工林为研究对象,分别以树高和胸径为基础,计算林分间伐强度。结果表明:以树高与冠幅比值为基础的间伐方式计算得出的间伐强度为39.6%,以胸径与冠幅相关性为基础的间伐方式计算得出的间伐强度为28.0%,以树高与冠幅相关性为基础计算得出的间伐强度分别为31.4%,3种方法实施的技术难度不同,计算依据不同,结果差异显著。根据不同的森林经营实际,在计算间伐强度时可采取不同的计算方法。
Taking Robinia pseudoacacia plantation in Yongshou County of Shaanxi Province as the research object, the thinning intensities of the stands were calculated based on tree height and DBH. The results showed that the thinning intensity calculated by the thinning method based on the tree height to crown ratio was 39.6%, and the thinning intensity calculated by the thinning method based on the correlation between DBH and crown width was 28.0% The thinning strength calculated on the basis of the correlation with the crown amplitude was 31.4%, respectively. The technical difficulties of the three methods were different, and the calculation results were significantly different. According to different forest management practices, different calculation methods may be adopted in calculating the thinning intensity.