Dynamic Growth Response of Pinus Massoniana Plantation on Intensive Thinning in Southwestern Guangxi, China / 桂西南马尾松人工林生长对不同强度采伐的动态响应

• Published in: Forest research (Beijing) Vol. 30; no. 2; p. 335
• Main Authors: 曾冀, 雷渊才, 贾宏炎, 蔡道雄, 唐继新
• Format: Journal Article
• Language: Chinese
• Published: Beijing Chinese Academy of Forestry 01.01.2017
• Subjects: Area; Density; Pine; Pinus massoniana; Plantations; Thinning; Trees; Variance analysis
• ISSN: 1001-1498
• DOI: 10.13275/j.cnki.lykxyj.2017.02.021

[Objective]Growth dynamics of Pinus massoniana were studied under intensive thinning so as to screen out suitable thinning intensity and provide technical support for close-to-nature management of Masson pine plantations. [Method]A thinning trial was conducted in a 14-year-old Masson pine plantation with stand density of 1 100 trees per hectare in October, 2007. Four thinning treatments including 225, 300, 375 and 450 trees left per hectare and the control without thinning were arranged. Since 2008, growth performance such as diameter at breast height (DBH), height, height of crown base and crown area were measured every two years, and wood volumes were calculated at the single tree and stand level. These data were analyzed through one-way variance analysis and Duncan multiple range tests to reveal dynamical responses of these index to all sorts of thinning intensities. [Result]Stand growth performance were significantly influenced by thinning intensity, mean annual increments of DBH, single tree volume, crow