| 积雪对冻土热状况的影响 |
| |
| 引用本文： | 马虹,胡汝骥.积雪对冻土热状况的影响[J].干旱区地理,1995,18(4):23-27. |
| |
| 作者姓名： | 马虹 胡汝骥 |
| |
| 作者单位： | 中国科学院新疆地理研究所!乌鲁木齐830011 |
| |
| 摘 要： | 研究表明季节性积雪对其下覆冻土的热状况有显著的影响，雪盖的存在不仅阻隔了冻土层的热能散失，从而有提高地温的作用；而且由于积雪本身所具有的低导热性和较大容积热容量等特点，延滞外部气候条件对冻土热状况的影响。反映冻土热状况的一个重要指标－冻土深度的变化与气温，太阳辐射的变化密切相关，因此，地理位置和地形在地一气系统之间的能量交换中，对冻土的状况也重要的影响作用。
|
| 关 键 词： | 积雪 季节性 冻土 热状况 |
EFFECTS OF SNOW COVER ON THERMAL REGIME OF FROZEN SOIL |
| |
| Ma Hong,Hu Ruji.EFFECTS OF SNOW COVER ON THERMAL REGIME OF FROZEN SOIL[J].Arid Land Geography,1995,18(4):23-27. |
| |
| Authors: | Ma Hong Hu Ruji |
| |
| Abstract: | This study demonstrates the snow cover has a signilicant effect on thermal state of underlying frozen soils. The existencc of .snow will not only insulate the heat loss from ground, thus raising the ground temperature, but also delay the effects of external conditions on thermal state of frozen soil due to it,s low conductivity and large capadty of heat.The variation of frozen soil depth is closely relatcd to varying air temperaturc and sloar radiation. Therefore, geographical locahon probably plays a more dominant role in affecting the process of energy exchange between ground and atmosphere, and hence the thermal reghe of underlying frozen soil. |
| |
| Keywords: | seasonal snow cover seasonal frozen soil thermal regime |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
