Soil compaction and conifer growth after tractor yarding at three coastal Washington locations
Soil compaction and conifer growth after tractor yarding at three coastal Washington locations
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华盛顿三个沿海地区拖拉机堆放后的土壤压实和针叶树生长
DOI：
10.1139/x26-026
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发表时间：
1996
影响因子：
2.2
通讯作者：
J. Hazard
中科院分区：
文献类型：
--
作者：
Richard E. Miller;W. Scott;J. Hazard
我们在三个砍伐地的细质土壤上测量了雨季后的土壤密度和树木生长。在四条打滑路径(重复)上或其附近采集了四种处理条件：未耕作和耕作的主要打滑路径，以及相邻的倾斜处理区域；第四种处理是两个位置的第二次打滑路径和第三个位置的仅记录的对照。16个处理小区被分成4个小区，每个小区随机分配到一个种积型，种植30株苗木。采用随机区组、裂区设计，对栽植后第8年的树木资料进行分析。与非林区相比，采伐后主滑行道0-8 cm深度的容重平均高出41-52%。8年后，初级滑道0-30 cm深度的容重仍比外部滑道高出约20%，但除铁杉外，树木存活率与铁杉相似。Sarg.)在未耕作的小路上生存较差。
We measured soil density and tree growth after wet-season, ground-based yarding on fine-textured soils at three clear-cut sites. Four treatment conditions were sampled on or near four skid trails (replicates): nontilled and tilled primary skid trails, and adjacent slash-treated areas; the fourth treatment was secondary skid trails at two locations and a logged-only control at the third location. The 16 treatment plots were split into 4 subplots, each randomly assigned to a species–stock type and planted with 30 seedlings. Tree data through year 8 after planting were analyzed as a randomized block, split-plot design. Compared with nontrail areas, bulk density in the 0- to 8-cm depth on primary skid trails after logging averaged 41–52% greater. Eight years later, bulk density in the 0- to 30-cm depth of primary skid trails still exceeded that outside trails by about 20%, yet tree survival was similar except for western hemlock (Tsugaheterophylla (Raf.) Sarg.) having poorer survival on nontilled trails at on...