抄録
Spatial and temporal variability of soil moisture is considered to have significant effects on energy and water transfer between land surface and atmosphere. One of the key effects on soil moisture distribution is topographic effect, that is, wet valley and dry hill top affected by surface and sub-surface flow along slope. Then, upward and downward heat and moisture fluxes controlled by Bowen ratio and soil heat transfer parameters determined by soil moisture also vary according to topography. In the permafrost regions, the effect of topography on heat and water transfer can be observed more clearly during melting season.
The purpose of this study is to understand the topographic effect on heat and water transfer in permafrost regions. The topographic effects on permafrost hydrological conditions were examined by the pit observations which were carried out on the Tibetan Plateau as a part of the GAME-Tibet project.
