基于多元回归分析油锯择伐作业对保留木损伤率的影响  

Effect of Chainsaw Selective Felling Operations on Damage Rate of Residual Trees Based on Multiple Regression Analysis

作　　者：游祥飞[1] 王立海[1] 孟春[1] 

机构地区：[1]黑龙江省森林持续经营与环境微生物工程重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2009年第11期36-37,42,共3页Journal of Northeast Forestry University

基　　金：国家"十一五"科技支撑课题(2006BAD03A08-05)资助

摘　　要：为了研究森林采伐作业对保留木损伤率的影响,降低森林经营和开发利用中资源的损失和浪费,实现现有森林资源的可持续发展,分析了油锯择伐作业中对保留木损伤率的影响,可知:采伐强度、林分密度和采伐木单株材积是影响保留木损伤率的主要因素。在此基础上,利用SPSS软件对择伐强度、林分密度和采伐木单株材积3个影响因素与保留木损伤率的关系进行了多元回归分析。结果表明:择伐强度、林分密度和采伐木单株材积对保留木损伤率有显著影响,它们对保留木损伤率的贡献(解释能力)大小依次为:择伐强度(贡献率为34.7%)>林分密度(贡献率为33.4%)>采伐木单株材积(贡献率为31.9%)。根据各影响因素对保留木损伤率的贡献大小,可以明晰作业、环境与树木之间关系,最大程度地降低采伐作业对保留树木的损伤。How to decrease the damage rate of residual standing trees in the selective cutting sites is quite important for forest land owners to reduce resource waste during wood production and to develop and utilize forest resources in a sustainable way. There are many factors affecting the damage rate of residual trees. Selective cutting intensity, stand density and fell- ing tree volume per stem were considered as the major influencing factors by analyzing related researches at home and abroad. Relationships between selective cutting intensity, stand density, felling tree volume per stem and the damage rate of residual trees were studied using multiple regression analysis with SSPS software. Results indicated that the damage rate of residual trees was significantly correlated with selective cutting intensity, stand density and felling tree volume per stem. The relative contributions （ explanatory power） of the three factors were in the order of selective cutting intensity （ contribution rate 34.7 percent） , stand density （33.4 percent）, and felling tree volume per stem （31.9 percent）. The relationships between felling operation, environment and trees could be cleared and also the damage of residual trees caused by felling operation could be reduced to the greatest extent according to the contributions of influencing factors to the damage rate of residual trees.

关 键 词：择伐作业 保留木 损伤率 油锯伐木 多元回归 

分 类 号：S782.11[农业科学—木材科学与技术]