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首页> 美国政府科技报告 >Review of the Sustained Yield Plan/Habitat Conservation Plan for the Propertiesof The Pacific Lumber Company, Scotia Pacific Holding Company, and Salmon Creek Corporation
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Review of the Sustained Yield Plan/Habitat Conservation Plan for the Propertiesof The Pacific Lumber Company, Scotia Pacific Holding Company, and Salmon Creek Corporation

机译：审查太平洋木材公司，scotia pacific Holding Company和salmon Creek Corporation的物业的持续产量计划/栖息地保护计划

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Downstream impacts to aquatic environments and property generally occur ascumulative watershed impacts, which are usually caused by changes in the transport of woody debris, water, and sediment through a watershed. The downstream cumulative impacts that are likely to accrue from implementation of the Sustained Yield Plan / Habitat Conservation Plan for the properties of The Pacific Lumber Company, Scotia Pacific Holding Company, and Salmon Creek Corporation (referred to here as the 'SYP/HCP') are thus assessed by evaluating the plan's likely effects on woody debris, water, and sediment. As currently written, the SYP/HCP will contribute to increased severity of cumulative impacts arising from an inadequate woody debris regime over the 50-year-period considered by the SYP/HCP. This increased level of cumulative impact will occur primarily because (1) a high proportion of the few remaining trees large enough to provide properly functioning wood will be cut from areas of residual old-growth within one old-growth tree height of streams; (2) there will be permanent removal of effective wood from Class III streams; (3) woody debris loadings in Class II channels will be permanently held at 21% or less of the levels that would be present in unmanaged stands; and (4) woody debris loadings in Class I channels will be permanently held at 39% or less of the levels that would be present in unmanaged stands.

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