不同采伐方式的人工林畜力集材效率比较

Comparison of Efficiencies of Animal Skidding under Different Cutting Modes for Larch Plantations

采用现场数据收集和定量分析的方法,从集材距离、集材时间和趟载量3个方面,对不同采伐方式下,落叶松人工林畜力集材的效率进行比较研究。结果表明:无论采用皆伐还是采用择伐生产方式,随着集材时间和集材距离的增加,集材效率均降低。在皆伐伐区,趟载量与集材效率的关系不明显;在择伐伐区,集材效率随着趟载量的增加而降低。对于平缓坡的落叶松人工林,皆伐伐区的畜力集材生产率要优于择伐伐区畜力集材生产率。

The operation efficiencies of animal skidding under different cutting modes for larch plantations were compared in terms of skidding distance, skidding time and skidding quantity per skidding circle using the methods of data collection on the sites and quantitative analysis. Results showed that for both clear cutting and selective cutting, the skidding efficiencies reduced with increasing skidding time and skidding distance. The relationship between skidding efficiencies and skidding quantity per skidding circle were not evident in clear cutting areas, while in selective cutting areas, the skidding efficiencies declined with increasing skidding quantity. For larch plantations located on the gentle slope, the operation productivity of animal skidding in clear cutting areas is better than that in selective cutting areas.