干旱区生态环境知识资源中心(Arid): CoLM陆面模式对中亚干旱荒漠草地生态系统陆面过程的数值模拟

Arid

	CoLM陆面模式对中亚干旱荒漠草地生态系统陆面过程的数值模拟
其他题名	Simulation analysis of land surface processes in central Asian desert grassland ecosystems using CoLM
	井长青; 安沙舟
来源期刊	草业学报
ISSN	1004-5759
出版年	2017
卷号	26 期号:3 页码:13-21
中文摘要	鉴于陆面模式在干旱半干旱区模拟性能较差,本研究运用Common Land Model(CoLM)陆面模式对中亚干旱荒漠草地生态系统进行了站点验证,检验其在该区域的模拟性能,并分析了其陆面特征。结果表明,不同水分状况的草地生态系统在能量分配上表现出明显的差异性,干旱特征明显的阜康站和咸海站能量分配表现为以感热通量为主;水分状况较好的巴尔喀什湖站能量分配以潜热通量为主。CoLM陆面模式对典型干旱荒漠草地生态系统的陆面过程有较好的模拟性能,能正确描述能量通量的日变化特征。模型对研究站点夜晚感热通量、土壤热通量的模拟效果不太理想,夜间感热通量模拟值略高于观测值,土壤热通量模拟明显低于观测值,在3个研究站点土壤热通量偏差均大于50W/m~2,不能很好地描述昼夜温差较大的干旱区夜间较强的土壤热通量交换过程。
英文摘要	The performance of a land surface heat flux model known as the Common Land Model(CoLM)was investigated in arid and semi-arid areas,in desert grassland ecosystems over Central Asia.The model performance was tested for three sites;Fukang,the Aral sea,and Balhash Lake,and the characteristics of the land surface were also analyzed for these three sites.It was found that water status of the grassland ecosystem had a major impact on the pattern of energy flux.Sensible heat flux was the dominant component of the diurnal energy balance at the Fukang site and Aral sea sites,which displayed obvious drought characteristics.The dominant energy component was the latent heat flux at Balhash Lake site,which was less arid than the other sites. CoLM performed well in typical desert grassland ecosystems,and correctly described the diurnal variation in energy fluxes.The simulations for sensible heat flux and ground heat flux overnight were less accurate.At night,the simulated sensible heat flux was higher than the observed values,and the simulated ground heat flux was significantly lower than the observed data.The deviation was greater than 50W/m~2 at each site.The model does not adequately describe the soil heat flux exchange process at night in arid areas which have a large temperature differential between day and night.
中文关键词	干旱区 ; 荒漠草地 ; 陆面过程 ; 湍流通量
英文关键词	CoLM arid area desert grassland land surface process CoLM turbulent fluxes
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5942053
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235691
作者单位	新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	井长青,安沙舟. CoLM陆面模式对中亚干旱荒漠草地生态系统陆面过程的数值模拟[J]. 新疆农业大学,2017,26(3):13-21.
APA	井长青,&安沙舟.(2017).CoLM陆面模式对中亚干旱荒漠草地生态系统陆面过程的数值模拟.草业学报,26(3),13-21.
MLA	井长青,et al."CoLM陆面模式对中亚干旱荒漠草地生态系统陆面过程的数值模拟".草业学报 26.3(2017):13-21.