Riparian trees, shrubs, and forest regeneration in the coastal mountains of Oregon
Riparian trees, shrubs, and forest regeneration in the coastal mountains of Oregon
复制标题
俄勒冈州沿海山区的河岸树木、灌木和森林再生
DOI：
10.1007/bf00025371
复制
发表时间：
1994
期刊：
影响因子：
2.2
通讯作者：
H. G. Weatherly
中科院分区：
文献类型：
--
作者：
D. Minore;H. G. Weatherly
河岸的树木和灌木是重要的提供商的树荫，银行的稳定性，并需要最佳的流质量和鱼类栖息地在俄勒冈州的沿海山区的木质残体，但需要更多的数据，这种木质植被的环境变量。在22个河岸环境中研究了树木，灌木和森林再生，以提供这些数据。针叶树断面积增加与海拔，流梯度，时间干扰，距离流，它减少与流的宽度。三文鱼浆果（悬钩子Pursh）覆盖和臭醋栗（茶藨子bracteosum Dougl。ex Hook.）溪流附近的覆盖率最高。矮俄勒冈州葡萄（Berglenervosa Pursh）覆盖和沙巴（白珠树shallon Pursh）覆盖最低的溪流附近。虽然各地的森林更新都很差，但随着灌木总覆盖率的降低而降低，随着河流坡度的增加而增加。在需要持续供应粗木质残体的地方，应维持现有的河岸针叶林。
Riparian trees and shrubs are important providers of shade, bank stability, and woody debris needed for optimal stream quality and fish habitat in the coastal mountains of Oregon, but more data are needed to relate this woody vegetation to environmental variables. Trees, shrubs, and forest regeneration were studied in 22 riparian environments to provide those data. Conifer basal area increased with elevation, stream gradient, time since disturbance, and distance from the stream; it decreased with stream width. Salmonberry (Rubus spectabilis Pursh) cover and stink currant (Ribes bracteosum Dougl. ex Hook.) cover were highest near the streams. Dwarf Oregon grape (Berberis nervosa Pursh) cover and salal (Gaultheria shallon Pursh) cover were lowest near the streams. Although forest regeneration was poor everywhere, it decreased with total shrub cover and increased with stream gradient. Existing riparian conifer stands should be maintained wherever a continuing supply of coarse woody debris is required.