Wood volume increment in thinned, 50- to 55-year-old, mixed-species Allegheny hardwoods
Wood volume increment in thinned, 50- to 55-year-old, mixed-species Allegheny hardwoods
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DOI：
10.1139/x26-091
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发表时间：
1996-05
影响因子：
2.2
通讯作者：
C. Nowak
中科院分区：
文献类型：
--
作者：
C. Nowak
间伐研究在50至55岁，甚至年龄，混合种阿勒格尼硬木产生高度可变的商品树干体积增量的反应。林分生长（向内生长，死亡率，幸存者的增长，净增长和总增长）的相对林分密度相关参数的回归方程的R2值范围从0.07到0.48。当相似的预处理物种组成的研究地块被分配到四个组使用聚类分析，R2值增加到0.94-0.99。林分相对密度与生长反应变量的关系在各样地组间存在显著差异。在所有密度下，具有高比例的黑樱桃（Prunuscandina Ehrh.）具有最高的体积增量。黑樱桃比例高，糖枫比例低的地块（Acersaccharum Marsh）。结果表明，随着林分相对密度的降低，林分蓄积量增加量减少，内生长量相对较高，死亡率相对较低。情节与...
A thinning study in 50- to 55-year-old, even-aged, mixed species Allegheny hardwoods produced highly variable merchantable stemwood volume increment responses. Regression equations relating parameters of stand growth (ingrowth, mortality, survivor growth, net growth, and gross growth) to relative stand density had R2 values ranging from 0.07 to 0.48. When study plots with similar pretreatment species composition were assigned to four groups using cluster analysis, R2 values were increased to 0.94–0.99. There were significant differences in the relationships between relative stand density and growth response variables among all plot groups. At all densities, plots with a high percentage of black cherry (Prunusserotina Ehrh.) had the highest volume increment. Plots with a high percentage of black cherry and a low percentage of sugar maple (Acersaccharum Marsh.) showed a decrease in volume increment, relatively high ingrowth, and relatively low mortality with a decrease in relative stand density. Plots with ...