Trends in Lumber Processing in the Western United States. Part II: Overrun and Lumber Recovery Factors
Trends in Lumber Processing in the Western United States. Part II: Overrun and Lumber Recovery Factors
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美国西部木材加工的趋势。
DOI：
10.13073/0015-7473-60.2.140
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发表时间：
2010
影响因子：
0.9
通讯作者：
J. Daniels
中科院分区：
文献类型：
--
作者：
C. E. Keegan;Todd A Morgan;K. Blatner;J. Daniels
本文描述了美国西部锯木厂木材回收的三种措施的趋势：木材超支（LO），木材回收系数（LRF）和立方木材回收（CLR）。在过去的30年里，所有州和地区的LO都有所增加。俄勒冈州和蒙大拿州的比率最高，分别为107和100%。阿拉斯加的LO最低，为31%，其次是四角地区（即亚利桑那州、科罗拉多州、新墨西哥州和犹他州）。由于美国西部的锯木厂使用斯克里布纳原木规则（SLR）作为原木输入的单位，因此较高的LO并不清楚地表明锯木厂正在使用改进的锯木技术和工艺。在最好的情况下，LO是对生产效率的不精确衡量。更好的衡量单位投入木材产量的方法包括LRF和CLR。这些测量方法比LO要好得多，因为它们基于原木中实木纤维的立方体积，从而消除了与SLR相关的一些问题。俄勒冈州，其次是华盛顿州……
This article describes trends in three measures of lumber recovery for sawmills in the western United States: lumber overrun (LO), lumber recovery factor (LRF), and cubic lumber recovery (CLR). All states and regions showed increased LO during the last three decades. Oregon and Montana had the highest LO at 107 and 100 percent, respectively. Alaska had the lowest LO at 31 percent, followed by the Four Corners Region (i.e., Arizona, Colorado, New Mexico, and Utah). Because sawmills in the western United States use the Scribner Log Rule (SLR) as the unit of log input, higher LO is not a clear indication that mills are using improved sawing technology and techniques. At best, LO is an imprecise measure of production efficiency. Better measures of lumber output per unit input include LRF and CLR. These measures are substantially better than LO because they are based on the cubic volume of solid wood fiber in a log, thus eliminating a number of the problems associated with the SLR. Oregon, followed by Washingt...