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中文摘要: 本文采用防风林干旱裸田和湿润小麦植被农田中的实测资料,应用热量平衡方法,计算了近地面层各通量密度。结果表明:在干旱防风林裸田中,净辐射的45%左右作为感热而散失,蒸发潜热只占35%左右,而土壤贮存的热量约占20%,并且林网具有明显的湿润空气效应。在湿润的小麦植被农田上,几乎净辐射的全部热量都用于潜热蒸散。有较强热平流时,潜热蒸发项甚至大于净辐射项。而感热几乎全天为负值。土壤热通量密度的比例只占净辐射的5%左右。文中对波文比及各通量密度做了误差分析。
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Abstract:In this paper, the sensible heat flux and the latent heat flux have been calculated using the heat balance method and the information based on the dry bareland with windbreak and the moist winter wheat field. The results are. in the dry bareland with windbreak, 45% of the net radiation is dispersing as sensible heat flux,.35% as latent heat flux, and only 20% is stored in soil. The Bowen ratio is greater, usually within range -2<β<2. In the moist winter wheat field, almost all the net radiation contributes to the latent heat flux. But the sensible heat flux almostly appears negative in the whole day.The soil heat flux content is only 5% of the net radiation. The Bowen ratio usually within range - 1<β<1. In this paper, the errors of the Bowen ratio and the flux are also discussed.
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基金项目:国家自然科学基金
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引用文本：
刘树华,张霭琛,陈家宜,1990.防风林裸田与湿润农田热量平衡比较[J].气象,16(12):15-20.
,1990.Comparison of the heat balance between the dry bareland with windbreak and the moist wheat field[J].Meteor Mon,16(12):15-20.
刘树华,张霭琛,陈家宜,1990.防风林裸田与湿润农田热量平衡比较[J].气象,16(12):15-20.
,1990.Comparison of the heat balance between the dry bareland with windbreak and the moist wheat field[J].Meteor Mon,16(12):15-20.