Characteristics of Sediment and Organic Carbon Export from Pristine Boreal Forest Watersheds
Characteristics of Sediment and Organic Carbon Export from Pristine Boreal Forest Watersheds
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原始北方森林流域沉积物和有机碳输出的特征
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
R. Naiman
中科院分区：
文献类型：
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作者：
R. Naiman
对每年从陆地生态系统流入海洋的物质数量的估计主要是基于对整个水文年发生的事件的不完全理解，对控制这种输出的流中过程的理解也很模糊。从1979年到1981年，在五条原始魁北克河流中测量了排放量、悬浮泥沙、颗粒有机物（POM;> 0.5 μ m）、溶解有机碳（DOC;直径<0.5μm）和有机物百分比：第一选择河（一级;流域面积：0.25 km 2）、海狸河（二级; 1.83 km 2）、麝鼠河（五级; 204 km 2）、马塔梅克河（六级; 673 km 2）和莫河（九级; 19871 km 2）。 除第一选择溪外，所有溪流在年流量的43-55%发生时都有强烈的春季径流。通过描述整个年水文循环中的泥沙和有机碳输出，1表明在2个月的春季洪峰期间，年泥沙量的71-92%被输出。
Estimates of the amount of material moving annually from terrestrial ecosystems to the ocean are largely based on an incomplete understanding of events occurring throughout the hydrologic year, and only a vague comprehension of in-stream processes controlling that export. Discharge, suspended sediment, particulate organic matter (POM; > 0.5 μm), dissolved organic carbon (DOC; <0.5 μm diameter), and the percentage of organic matter were measured from 1979 to 1981 in five pristine Quebec streams: First Choice Creek (1st order; watershed area: 0.25 km2), Beaver Creek (2nd order; 1.83 km2), Muskrat River (5th order; 204 km2), Matamek River (6th order; 673 km2), and the Moisie River (9th order; 19 871 km2). All streams, with the exception of First Choice Creek, have a strong spring freshet when 43–55% of the annual discharge occurs. By describing sediment and organic carbon export throughout the annual hydrologic cycle, 1 showed that during the 2-mo spring freshet 71–92% of the annual sediment load is exported...