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DOI	10.1007/s11430-012-4433-0
	Parameterizing soil organic carbon's impacts on soil porosity and thermal parameters for Eastern Tibet grasslands
	Chen YingYing; Yang Kun; Tang WenJun; Qin Jun; Zhao Long
通讯作者	Chen, YY (通讯作者)
发表日期	2012
ISSN	1674-7313
EISSN	1869-1897
起始页码	1001
结束页码	1011
卷号	55 期号:6
英文摘要	This study investigates the stratification of soil thermal properties induced by soil organic carbon (SOC) and its impacts on the parameterization of the thermal properties. Soil parameters were measured for alpine grassland stations and North China flux stations, with a total of 34 stations and 77 soil profiles. Measured data indicate that the topsoils of alpine grasslands contain high SOC contents than underlying soil layers, which leads to higher soil porosity values and lower thermal conductivity and bulk density values in the topsoils. However, this stratification is not evident at the lowland stations due to low SOC contents. Evaluations against measured data show that three thermal conductivity schemes used in land surface models severely overestimate the values for soils with high SOC content (i.e. topsoils of alpine grassland), but they are better for soils with low SOC content. A new parameterization is then developed to take the impacts of SOC into account. The new one can well estimate the soil thermal conductivity values in both low and high SOC content cases, and therefore, it is a potential candidate of thermal conductivity scheme to be used in land surface models.
关键词	LAND-SURFACE MODEL CONDUCTIVITY PARAMETERIZATION FLUX MEASUREMENTS NUMERICAL-MODEL MOISTURE TEMPERATURE HEAT SIMULATION SYSTEM COMMON
英文关键词	soil organic carbon; soil thermal parameters; alpine grassland; parameterization
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000305436400014
来源期刊	SCIENCE CHINA-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257976
推荐引用方式 GB/T 7714	Chen YingYing,Yang Kun,Tang WenJun,et al. Parameterizing soil organic carbon's impacts on soil porosity and thermal parameters for Eastern Tibet grasslands[J]. 中国科学院青藏高原研究所,2012,55(6).
APA	Chen YingYing,Yang Kun,Tang WenJun,Qin Jun,&Zhao Long.(2012).Parameterizing soil organic carbon's impacts on soil porosity and thermal parameters for Eastern Tibet grasslands.SCIENCE CHINA-EARTH SCIENCES,55(6).
MLA	Chen YingYing,et al."Parameterizing soil organic carbon's impacts on soil porosity and thermal parameters for Eastern Tibet grasslands".SCIENCE CHINA-EARTH SCIENCES 55.6(2012).