东北人工林履带式和轮式小型拖拉机集材效率分析

Efficiencies of Tracked Tractor and Wheeled Tractor Skidding for Northeast Forest Plantations

通过大量调查和实测资料,定量地研究分析履带式和轮式小型拖拉机集材对人工针阔混交林的集材效率。履带式小型集材拖拉机的集材效率和生产率优于轮式拖拉机,其中原条集材优于原木。回归分析结果表明:随着集材时间和集材距离的增加,两种拖拉机集材效率均降低,但运载量与集材效率的关系不明显。相关分析结果表明:拖拉机集材效率与集材距离、集材时间、运载量、集材距离与集材时间相互关系、运载量与集材数量相互关系是显著不同的。无论是原条还是原木集材,履带式拖拉机集材生产率都要高于轮式拖拉机集材生产率。

Through lots of survey and testing , we analyzed the efficiencies of tracked tractor and wheeled tractor skidding for northeast mixed broadleaf-conifer forest plantations quantitatively .The efficiency of skidding and productivity of tracked tractor was bigger than wheeled tractor , and the log skidding was better than stem skidding .By the regression , the skidding efficiencies reduced with increasing skidding time and skidding distance .However , the relationships between skidding effi-ciencies and skidding quantity per skidding circle were not evident .By the correlation analysis , the skidding efficiency was significantly different among skidding distance , skidding time , skidding quantity per skidding circle , interaction between skidding distance and time , interaction between skidding quantity and numbers of stem or log .The production rate of tracked tractor was higher than that of wheeled tractor in both stem and log skidding .