五道梁地区土壤热状况的讨论  

SOIL HEAT CONDITION DISCUSSION OF WUDAOLIANG REGION

作　　者：李韧[1] 季国良[1] 李述训[1] 杨文[1] 赵剑琦[1] 周晓平[1] 吕兰芝[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所,兰州730000

出　　处：《太阳能学报》2005年第3期299-303,共5页Acta Energiae Solaris Sinica

基　　金：中国科学院青藏高原综合观测站项目;中国科学院寒区旱区环境与工程研究所创新项目:青藏高原能量平衡的观测与模拟研究的共同资助。

摘　　要：利用五道梁1994-1999年之辐射观测资料及0cm地温资料,结合五道梁附近的较深层的地温观测资料,从土壤温度梯度、土壤热通量、土壤导热率、地表净辐射、季节性冻土的融化深度以及2.0m地温的变化等方面分析了五道梁地区的土壤热状况。通过计算分析,得到(1)该地区土壤温度梯度5至8月份为负,10月份至来年3月份为正;(2)土壤热通量的变化规律与土壤温度梯度一致;(3)土壤导热率呈双峰型,4月份最大,9月份次大;(4)土壤温度梯度与地表净辐射负相关,线性相关系数达-0.95;(5)季节冻融层的融化深度有增大的趋势;2.0m处地温有增大的趋势。In this paper, with radiative data observed and 0 cm soil temperature at Wudaoliang weather station cooperated with deeper soil temperature observation nearby, the soil heat condition is analyzed at aspects such as soil temperature gradient (Gra), soil heat flux (H2), soil heat conduction rate (λ), surface net radiation (B), melt depth of seasonal frozen earth (Md) and the variation of earth temperature at 2.0 m (Ts2). By calculation and analysis, the following results were obtained that the Gra is positive from Apr. to Sep, from Oct. to March next year, negative; the variation character of H2 is the same as Gra; the value of A with two peaks, the largest peak is at Apr., the second large is at Sep.; there is negative relevance between B and Gra, linear correlation coefficient is -0.95; Md is with deepening trend; TS2 is with trend of increasing.

关 键 词：土壤温度梯度 土壤热通量 净辐射 季节性冻融层 

分 类 号：TK512[动力工程及工程热物理—热能工程]