CAJ | 학술논문

　　在黑河上游青海省祁连县阿柔乡取得陆面过程观测资料，分析了冻融过程中土壤水热变化及其对地表反照率、辐射平衡各分量和净辐射的影响。结果表明：下层土壤的始冻期和解冻期均滞后于上层土壤的。冻结速率与气温表现为明显的反相位变化，而自上融化的速率则与气温表现出相同的变化趋势。土壤水分在始冻期和解冻期前后变化很大，而在完全冻结期变化较小。在始冻期前后土壤水分的变化主要是由土壤水的相变和土层间的水分迁移造成的，而解冻期前后的则是土壤水的相变、降水过程和地表蒸散共同作用的结果。完全冻结期的地表反照率大于始冻期和解冻期的。冻融过程中的总辐射和反射辐射的变化可以分为三个阶段：减小?增加?略微减小。地表向上长波辐射和大气逆辐射的变化则可分成减小?增加?略微增加三个阶段。受太阳短波辐射的控制，净辐射依次表现为减小?增大?增大的变化趋势。
　　재흑하상유청해성기련현아유향취득륙면과정관측자료，분석료동융과정중토양수열변화급기대지표반조솔、복사평형각분량화정복사적영향。결과표명：하층토양적시동기화해동기균체후우상층토양적。동결속솔여기온표현위명현적반상위변화，이자상융화적속솔칙여기온표현출상동적변화추세。토양수분재시동기화해동기전후변화흔대，이재완전동결기변화교소。재시동기전후토양수분적변화주요시유토양수적상변화토층간적수분천이조성적，이해동기전후적칙시토양수적상변、강수과정화지표증산공동작용적결과。완전동결기적지표반조솔대우시동기화해동기적。동융과정중적총복사화반사복사적변화가이분위삼개계단：감소?증가?략미감소。지표향상장파복사화대기역복사적변화칙가분성감소?증가?략미증가삼개계단。수태양단파복사적공제，정복사의차표현위감소?증대?증대적변화추세。
The land surface process observation data used here came from Arou Town, Qilian County in Qinghai Province in the upper reaches of Heihe River, analyzed the soil moisture and thermal changes and its impact on the ground surface albedo and each component of the ground surface radiation balance in the freezing and thawing processes. The results showed that the beginning and ending date of freezing were both lagging behind the upper layer. The freezing rate obviously followed air temperature undulation inversely, while the thawing rate downwards showed the same trend with air temperature. Soil moisture changed much before and after the beginning dates of freezing and thawing, while it changed little in the freezing period. Changes in soil moisture were mainly caused by the soil water phase change and migration between different layers before and after the beginning date of freezing, while they were the effect of the soil water phase change, precipitation processes and the ground surface evapotranspiration before and after the beginning date of thawing. Ground surface albedo in the freezing period was bigger than that in the beginning and ending dates of freezing. Changes of the total radiation and the reflected radiation in the freezing and thawing period were both divided into three stages, i.e. a decrease stage to an increase stage and then to a slight decrease stage. While changes in upward long wave radiation and downward long wave radiation were both divided into a decrease stage to an increase stage and then to a slight increase stage. Controlled by the solar shortwave radiation, the net radiation showed a decreasing trend to an increasing trend and then to an increasing trend in turn.