Emergency watershed protection measures in highly unstable terrain on the Blake Fire, Six Rivers National Forest, 1987
Emergency watershed protection measures in highly unstable terrain on the Blake Fire, Six Rivers National Forest, 1987
复制标题
六河国家森林布莱克火灾高度不稳定地形的紧急流域保护措施，1987 年
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
K. Wright
中科院分区：
文献类型：
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作者：
Mark E. Smith;K. Wright
布莱克大火烧毁了加州西北部南福克山西坡约730公顷的成熟木材。许多陡峭的内谷和滑坡端墙地区燃烧得非常热，杀死了大多数大树，消耗了不稳定排水系统中的大部分有机碎片。这可能会对下游渔业造成不利影响，因为滑坡和释放以前留在大型有机废弃物后面的沉积物。紧急修复工作的重点是通过倾倒和倾倒倒下的原木和枯树以及抢救死亡的“高风险”树木来改善河道状况，这些树木可能会因倾倒或滑动而将土壤直接排入这些排水系统。稻草捆被夹在“替代”原木后面，以促进滑坡碎片和其他沉积物的保留。目前的实地观察表明，其中一些紧急措施在短期内是有效的。需要进一步收集和分析数据，以评估长期有效性。
The Blake Fire burned about 730 ha of mature timber on the west slope of South Fork Mountain in northwestern California. Many steep innergorge and landslide headwall areas burned very hot, killing most large trees and consuming much of the large organic debris in unstable drainages. This created a potential for adverse effects on downstream fisheries from landsliding and the release of sediment formerly retained behind large organic debris. Emergency rehabilitation focused on enhancing channel conditions by falling and bucking downed logs and dead trees and by salvaging dead "high-risk"-trees that could displace soil directly into these drainages by toppling or sliding. Straw bales were wedged behind "replacement" logs to promote retention of landslide debris and other sediment. Current field observations indicate that some of these emergency measures have been effective in the short term. Further data collection and analysis will be needed to evaluate long-term effectiveness.