干旱区生态环境知识资源中心(Arid): 陇中黄土高原夏季地表能量平衡观测研究

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	陇中黄土高原夏季地表能量平衡观测研究
其他题名	Experimental Study on Surface Energy Balance over Loess Plateau of Middle Part Gansu in Summer
	杨兴国; 张强; 王润元; 马鹏里; 杨启国; 刘宏宜
来源期刊	高原气象
ISSN	1000-0534
出版年	2004
卷号	23 期号:6 页码:828-834
中文摘要	利用2003年6～8月的实际观测资料,分析了陇中黄土高原夏季地表通量特征.在春小麦下垫面,无论晴天或阴天,能量主要消耗于农田蒸散.在裸地下垫面各能量通量表现出同样的变化特征,但由于降雨量的增加,导致潜热占净辐射的比例比春小麦地的还高.在晴天或阴天地气之间能量传输引起土壤温度变化的深度,主要出现50 cm以上,其日变化均呈现准正弦曲线形式,50 cm以下的土壤温度不存在日变化.在半干旱区云和降水对地表辐射和能量平衡造成的影响不容忽视.波文比在日出以后逐渐增大,到正午达最大值; 春小麦下垫面时的波文比大于裸地时的值,两者的极值分别是1.01和0.75.
英文摘要	The surface energy flux characteristic of Loess Plateau in middle part of Gansu is analyzed based on the experimental energy flux data observed over Dtngxi Arid Meteorology and Ecological Environ-ment Experimental Stations in June-August 2003. The result shows that the net radiation is mainly used up field evapotranspiration either in spring wheat field or in bare field on fine or cloudy days, which lead to the rate of latent flux to net radiation is higher at bare field than that at spring wheat one because of the rainfall increasing. The diurnal temperature variations of the surface and soil show the approximately sine curve on clear and cloudy days either at the surface or 5 cm and 10 cm depths, but the anti-phase variation on the weak extent at 20 cm depths, even no diurnal variation under 50 cm. Furthermore, the cloud and precipitation can bring about great influence on surface radiation and energy balance in semi-arid region. The Bowen rate is increasing after sunrise and the maximum value occurs at midday time and under zero with large fluctuation during night. Meanwhile the Bowen rate in spring wheat field is bigger than one in bare one and the both maximum values are 1. 01 and 0. 75 respectively.
中文关键词	陇中 ; 黄土高原 ; 地表感热 ; 地表潜热
英文关键词	Middle part of Gansu Province Loess Plateau Surface sensible heat Surface latent heat
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:1793969
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205181
作者单位	中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	杨兴国,张强,王润元,等. 陇中黄土高原夏季地表能量平衡观测研究[J]. 中国气象局兰州干旱气象研究所,2004,23(6):828-834.
APA	杨兴国,张强,王润元,马鹏里,杨启国,&刘宏宜.(2004).陇中黄土高原夏季地表能量平衡观测研究.高原气象,23(6),828-834.
MLA	杨兴国,et al."陇中黄土高原夏季地表能量平衡观测研究".高原气象 23.6(2004):828-834.