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由于土壤与大气之间的能量和水分交换主要发生在界面层,因此在研究地气相互作用时,浅层土壤的冻融状况尤为重要.根据中日国际合作项目CEOP/CAMP-Tibet的观测结果分析发现,就青藏高原中部那曲附近而言,表层土壤真正冻结的日数较少(1个月左右).而存在日冻融循环过程的日数则较多(6个月左右).土壤冻融状态的频繁变化,会极大地影响土壤和大气之间的水分和能量的交换过程.指出土壤在不同状态(完全消融、完全冻结和存在日冻融循环)下,土壤与大气之间的相互作用过程是个值得深入研究的问题.
Since the exchange of energy and water between the soil and the atmosphere takes place mainly in the interface layer, the freeze-thaw condition of the shallow soil is particularly important in studying the interaction between ground and atmosphere.According to the CEOP / CAMP-Tibet observations The analysis shows that in the middle of the Qinghai-Tibet Plateau, the real freezing days of the surface soils are less (about 1 month), while the days of the freeze-thaw cycles are more (about 6 months) , The process of exchange between soil and atmosphere will be greatly influenced by the frequent changes of soil and atmosphere.It is pointed out that the interaction process between soil and atmosphere under different states (complete ablation, complete freezing and the existence of daily freeze-thaw cycles) It is a question that deserves further study.