The Impact of Harvesting and Site Preparation on the Physical Properties of Lower Coastal Plain Forest Soils
The Impact of Harvesting and Site Preparation on the Physical Properties of Lower Coastal Plain Forest Soils
复制标题
采伐和整地对沿海平原森林土壤物理性质的影响
DOI：
10.2136/sssaj1983.03615995004700030041x
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
A. Hassan
中科院分区：
文献类型：
--
作者：
J. A. Gent;R. Ballard;A. Hassan
集约化森林管理的做法对土壤物理性质的影响进行了研究，收集完整的，7.6厘米直径的土芯样品，深度为30厘米收获前，收获后，和后，在建立在主要的防滑小径和地区接受整树和传统的树长收获治疗的地块准备。所有地块的场地准备工作是剪，烧，砍，和床。采伐增加了容重，降低了通气孔隙度在所有样品领域。在这些属性的显着变化被检测到30厘米的深度在滑迹图。然而，显着的变化，在整个树和树的长度地块仅限于上15厘米的土壤。收获也显着降低饱和导水率的深度为8厘米的滑道图和15厘米的树长图，但没有显着的效果在全树图。垫料被证明是有效的抵消土壤压实在整棵树和树长的地块形成一个新的土壤表面，19厘米的高度，在收获期间被贩运的表面。在滑道试验区，垫层可能不那么有效，因为在垫层下原始表面发现的土壤被破坏到可能抑制根系生长的程度。«少
The impact of intensive forest management practices on soil physical properties was examined by collecting intact, 7.6 cm diameter soil core samples to a depth of 30 cm before harvest, after harvest, and after site preparation in plots established in primary skid trails and areas receiving whole-tree and conventional tree-length harvesting treatments. Site preparation for all plots was shear, burn, chop, and bed. Harvesting increased bulk density and decreased aeration porosity in all samples areas. Significant changes in these properties were detected to the 30-cm depth in the skid trail plots. However, significant changes in the whole-tree and tree-length plots were limited to the upper 15 cm of soil. Harvesting also significantly decreased saturated hydraulic conductivity to a depth of 8 cm in the skid trail plots and 15 cm in the tree-length plots but had no significant effect in the whole-tree plots. Bedding proved to be effective in offsetting soil compaction in the whole-tree and tree-length plots by forming a new soil surface, 19 cm in height, over the surface which was trafficed during harvest. Bedding may not be as effective in the skid trail plots because the soil found at the original surface under the bed was compactedmore » to the extent that root growth may be inhibited.« less