期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Economic analysis on log damage during logging operation in Caspian Forests 被引量:1
1
作者 Farshad Keivan Behjou 《Journal of Forestry Research》 SCIE CAS CSCD 2013年第3期585-589,共5页
Waste wood was studied in an economic enterprise by logging, function, tree species and log size in four Caspian hardwood sites. Dam- aged logs were recorded with additional information obtained for the location, dime... Waste wood was studied in an economic enterprise by logging, function, tree species and log size in four Caspian hardwood sites. Dam- aged logs were recorded with additional information obtained for the location, dimensions and type of damage. The data were analyzed statis- tically to determine significant differences of damage during logging process. The results indicated that animal harvesting systems cause more volume (40.5% of log volume) and value loss (89.5 $.m^-3) to logs than mechanized harvesting systems (13.9% and 6.0 $.m^-3), also bucking resulted in significantly more volume (9.9% of log volume) and value loss (5.5 $.m-3) when compared to skidding (0.2% of log volume and 0.2 $.m^-3), decking (0.4% of log volume and 0.2 $.m^-3) and loading (0.2% of log's volume and 0.3 $.m^-3) operations. Study showed that the processes of skidding, decking and loading of logs have very little impact on dam- age levels. Volume and value losses of damaged logs are not sensitive to tree species and log size. The information from the field study is impor- tant in creating new guidelines or training to help minimize hardwood log damage during the timber harvesting process. 展开更多
关键词 log damage forest operations caspian hardwood forests
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部