采伐方式及整地对半干旱地区油松天然更新的影响  

Artificial Promoting Measures on Natural Regeneration of Pinus tabulaeformis Plantation in Semiarid Region

作　　者：刘明国[1] 赵伟浩[1] 殷有[1] 孟庆洲[2] 鹿天阁[2] 卢国珍[3] 李从心[1] 

机构地区：[1]沈阳农业大学林学院,沈阳110161 [2]辽宁省建平县林业局．辽宁建平124000 [3]辽宁省干旱地区造林研究所,辽宁建平122400

出　　处：《沈阳农业大学学报》2009年第3期313-317,共5页Journal of Shenyang Agricultural University

基　　金：“十一五”辽宁省科技攻关项目(2006207001)

摘　　要：采用固定标准地观测方法,对朝阳半干旱地区油松天然更新人工促进措施进行了探讨,旨在为半干旱地区油松林的科学经营提供理论与技术依据。结果表明:间伐、带状采伐、带状采伐栽植山杏和整地措施可有效促进天然更新。对于31a生油松人工林,保留株数为225～375株.hm-2的间伐强度更新效果较好,更新幼树株数为2630～3480株·hm-2,更新频率为78%～83%;带状采伐宽度以8～12m为宜,更新幼树株数为2604～4375株·hm-2,更新频率为67%～91%;通过带状采伐栽植阔叶树山杏,可逐渐把现有油松人工纯林向复层异龄混交林方向诱导。In order to promote natural regeneration of Pinus tabulaeformis plantation, 5 artificial measures were discussed by employing the observation of permanent plots. Results showed that some measures were very effective for promoting natural regeneration, such as thinning, strip cutting, planting broad-leaved trees after strip cutting, and site preparation. Suitable final crop stockings after thinning were from 225-375 stem·hm^-2 for 31 years old plantation of Pinus tabulaeformis, in which sapling number was 2630-3480 stem·hm^-2 ,and regeneration frequency was 78%-83%. 8-1m was best width of cutting belt, in which sapling number was 2604-4375 stem·hm^-2,and regeneration frequency was 67%-91%. By means of the measure of planting broad-leaved trees after strip cutting, the large area of pure plantations of Pinus tabulaeformis could gradually become into mixed uneven-aged forests.

关 键 词：人工促进措施 天然更新 油松 半干旱地区 

分 类 号：S791.354[农业科学—林木遗传育种]