Functional Effects of Vegetation on the Radiant Energy Budget of Boreal Forest
Functional Effects of Vegetation on the Radiant Energy Budget of Boreal Forest
复制标题
植被对北方森林辐射能量收支的功能影响
DOI：
10.1139/t74-038
复制
发表时间：
1974
影响因子：
3.6
通讯作者：
L. C. Bliss
中科院分区：
文献类型：
--
作者：
R. Haag;L. C. Bliss
与苔原相比，植被质量较低，对能量交换的影响相对较小，北方森林植被对进出地表的能量通量具有更重要的缓冲作用。冠层下方的空气流动减少，相对较高比例的太阳辐射被冠层直接吸收，以显热或潜热的形式损失掉。去除分层植被提供的缓冲会导致土壤热通量和地面温度增加，以及活动层深度增加，这在富含冰的永久冻土地区可能导致地表沉降。
In contrast to tundras, where the mass of vegetation is low and its effect on energy exchange relatively small, boreal forest vegetation exerts a more important buffering effect on energy flux to and from the ground surface. Air movement below the canopy is reduced, and a relatively high proportion of solar radiation is absorbed by the canopy directly, to be lost as sensible or latent heat. Removal of the buffer provided by stratified vegetation results in increased soil heat flux and ground temperatures, and increased depth of the active layer, which in areas of ice rich permafrost can lead to surface subsidence.