干旱区生态环境知识资源中心(Arid): 塔克拉玛干沙漠地表浅层土壤热扩散率、温度和热通量计算方法的比较研究

Arid

	塔克拉玛干沙漠地表浅层土壤热扩散率、温度和热通量计算方法的比较研究
其他题名	Comparison of the Different Methods to Estimate Soil Thermal Diffusivity, Temperature and Heat Flux in Sub-surface of Taklimakan Desert
	李火青 1; 吴新萍 2; 买买提艾力·买买提依明 3; 霍文 3; 杨兴华 3; 何清 3; 刘永强 4
来源期刊	土壤通报
ISSN	0564-3945
出版年	2016
卷号	47 期号:4 页码:805-813
中文摘要	利用塔克拉玛干沙漠大气环境观测站2008年7月30日至8月4日的土壤温度、湿度和土壤热通量观测资料,定量分析了沙漠土壤热扩散率、温度、热通量的变化规律。采用谐波法、振幅法、相位法和热传导对流法分别计算了5~ 20 cm沙漠土壤的热扩散率,在此基础上,以5 cm深度的土壤层为上边界条件,计算了10和20 cm深度的土壤温度和8 cm深度的土壤热通量。结果表明:谐波法计算沙漠土壤温度的精度最高,10和20 cm深度的土壤温度计算值与观测值的标准误差分别为0.167 ℃和0.127 ℃;热传导对流法对土壤温度的计算结果好于振幅法和相位法。同样,谐波法计算的沙漠土壤热通量值与观测值的误差最小,计算值与观测值的相关系数R~2达到0.976,热传导对流法次之,振幅法和相位法的误差最大。
英文摘要	The observed soil temperature, humidity and heat fluxes from July 30 to August 4, 2008 at Tazhong station over the hinterland of the Taklimakan Desert in China were analyzed to estimate the variations of soil thermal diffusivity, temperature and heat flux. The soil thermal diffusivities at depth of 5-20 cm were evaluated by different methods of Harmonic, Amplitude, Phase, and Conduction-convection, respectively. Based on the analysis of soil thermal diffusivities, the layer of soil depth of 5 cm was regarded as top boundary condition, and soil temperature at depth of 10 and 20 cm and soil heat fluxes at depth of 8 cm were estimated. It demonstrated that the Harmonic method had the most accuracy to estimate soil temperature, and the standard errors, between the values estimated by the different methods and the observed ones, were 0.167 ℃ and 0.127 ℃ at depth of 10 and 20 cm, respectively. Moreover, the results confirmed the Conduction-convection method was better than the Amplitude and Phase methods to estimate soil temperature. Similarity, the Harmonic method had the minimum error to estimate soil heat flux, and the correlation coefficient R~2 between the simulated and the observed values reached to 0.976. Furthermore, Conduction-convection method also was better than the Amplitude and Phase methods to estimate soil heat flux.
中文关键词	塔克拉玛干沙漠 ; 土壤热扩散率 ; 土壤温度 ; 土壤热通量
英文关键词	Taklimakan Desert Soil Diffusivity Soil Temperature Soil Heat Flux
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5849868
来源机构	新疆大学 ; 中国气象局乌鲁木齐沙漠气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235077
作者单位	1.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国; 2.新疆且末县塔中气象站, 塔中, 新疆 841000, 中国; 3.中国气象局乌鲁木齐沙漠气象研究所, 乌鲁木齐, 新疆 830002, 中国; 4.新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	李火青,吴新萍,买买提艾力·买买提依明,等. 塔克拉玛干沙漠地表浅层土壤热扩散率、温度和热通量计算方法的比较研究[J]. 新疆大学, 中国气象局乌鲁木齐沙漠气象研究所,2016,47(4):805-813.
APA	李火青.,吴新萍.,买买提艾力·买买提依明.,霍文.,杨兴华.,...&刘永强.(2016).塔克拉玛干沙漠地表浅层土壤热扩散率、温度和热通量计算方法的比较研究.土壤通报,47(4),805-813.
MLA	李火青,et al."塔克拉玛干沙漠地表浅层土壤热扩散率、温度和热通量计算方法的比较研究".土壤通报 47.4(2016):805-813.