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首页> 外文会议>AWRA's 2000 Summer Specialty Conference on Riparian Ecology and Management in Multi-Land USE Watersheds Aug 28-31, 2000 Portland, Oregon >RIPARIAN MANAGEMENT STRATEGIES FOR THE INTERIOR COLUMBIA RIVER BASIN
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RIPARIAN MANAGEMENT STRATEGIES FOR THE INTERIOR COLUMBIA RIVER BASIN

机译：哥伦比亚内河盆地的RIPARIAN管理策略

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摘要

Competition between ecological and economic values in riparian forests creates a management dilemma that is not easily resolved. For the Interior Columbia River Basin, we propose a solution that tailors management practices to fit local conditions described by riparian, stream channel, and fish habitat requirements. Riparian stand conditions on Plum Creek Timber Company lands in Montana, Idaho, and eastern Washington were described using 640 randomly distributed sample plots. Nine dominant riparian stand types were identified. A forest growth model and a large woody debris-loading model were used to simulate outcomes of different riparian management options in these stand types. Five of nine stand types have limited ability to provide LWD and consequently are most sensitive to timber harvest. The remaining four can withstand timber harvest and still provide LWD. Adjusting the number and location of leave trees within 15 m of streams can greatly affect future LWD loads with little additional costs to landowners. Montana's existing riparian management guidelines appear adequate to protect the LWD recruitment function in most cases. Where fish habitat is most vulnerable to LWD loss, and where fish species or life-stages are most vulnerable to such losses, increased riparian protection can provide the greatest conservation benefit. These situations include stream reaches with gradients between 1.5% and 3%, and areas prone to channel avulsion.
机译：河岸带森林中的生态价值和经济价值之间的竞争造成了管理难题，这一难题很难解决。对于内陆哥伦比亚河流域，我们提出了一种解决方案，该解决方案可以根据河岸，河道和鱼类栖息地要求来量身定制适合于当地条件的管理实践。使用640个随机分布的样地描述了位于蒙大拿州，爱达荷州和华盛顿东部的Plum Creek木材公司土地上的河岸林地条件。确定了九种优势河岸林分类型。使用森林生长模型和大型木质碎片装载模型来模拟这些林分类型中不同河岸管理方案的结果。九种林分类型中有五种提供随钻测井的能力有限，因此对木材采伐最敏感。其余四个可以抵御木材采伐，并且仍然提供随钻测井。调整溪流15 m内的落叶树的数量和位置可以极大地影响未来的随钻测井负荷，而对土地所有者的附加成本却很小。在大多数情况下，蒙大拿州现有的河岸管理指南似乎足以保护随身随行者的招募职能。在鱼类栖息地最容易遭受随身残疾损失的地方，以及鱼类种类或生命阶段最容易遭受此类损失的地方，增加河岸保护可以提供最大的保护效益。这些情况包括溪流的坡度在1.5％和3％之间，以及容易发生河道撕裂的区域。

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