我们检查了河岸站达到规模变化,树死亡率,木招聘,阴影,和土壤扰动与河岸处方收获毗邻源头溪流常年在华盛顿州西部森林实践规则。我们比较未收获的参考站点(REF)和三个治疗:无缓冲的明确的收获(CC), 15米宽的缓冲区(BUF),和缓冲区的起始点(PIP)。十年收获后,累计住断面积变化是积极的参考站(+ 3%)和消极的缓冲区(-14%)和脉冲(-39%)。累积死亡率(底面积百分比)是在PIP和BUF站高于参考站(分别为48岁,27岁,9%)。收获后死亡率缓冲区之前最高年5年5和10之间大幅下降;风能是死亡率的代理。累积招募木材体积缓冲区和皮普达到两倍和四倍REF卷,分别。缓冲区的许多倒下的树木被连根拔起,下降横跨在狭窄的通道。后一年丰收,郁闭于缓冲区(76%)和低脉冲(52%)相比,达到REF达到(89%),但超过85%增加了十年。郁闭一年期收获后在CC达到12%,增加37%,第五年,72%年十由于生长的灌木和小树。 Harvest-related soil disturbance occupied 6% of surface area in 30-foot wide equipment limitation zones adjacent to CC reaches but was minimal in buffers. Twice as many uprooted trees delivered sediment to streams in BUF reaches as in REF reaches, but the percentage of root-pits that delivered sediment was greater in REF reaches. Mean horizontal distance to the stream for root-pits that delivered sediment was 8 feet. Overall, 50-foot buffers reduced change in shade and wood input regimes compared to unbuffered reaches.