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作 者 ：肖薇,郑有飞,于强

期 刊 ：生态学报 2005年 25卷 7期 页码：1626~1634

关键词：SHAW；小气候；能量平衡；表面辐射温度；叶温；土壤温度；玉米；

Keywords:SHAW, micrometeorological, energy balance, radiometric temperature, leaf temperature, soil temperature, maize,

摘 要 ：能量平衡是作物冠层水热传输的基础,气象因子(如空气温度、湿度、风速和土壤温度)是影响作物活动的外界条件,而叶温反映作物的整体健康状况。对冠层状况的理解和模拟有利于了解小气候特征并加强农田管理。采用SHAW(theSimultaneousHeatandWater)模型模拟:冠层表面能量平衡,表面辐射温度,冠层中叶温、气象要素和土壤温度廓线,模型的输入数据来源于华北平原禹城综合试验站。模型很好的模拟了表面能量平衡、冠层表面辐射温度、土壤温度、冠层2/3高度以下叶温和2/3高度以上气象要素。模型模拟净辐射(Rn)的效率达到0.97,潜热(LE)和感热通量(Hs)的模拟效率分别为0.81和0.78,模拟的表面辐射温度与实测值吻合较好,其模拟效率为0.91,冠层2/3高度以下的叶温模拟效率为0.76～0.86,但该高度以上的模拟结果不理想。除了2cm深度外,各层土壤温度模拟较好。

Abstract:Yucheng is a typical city in the North China plain, which is one of the most important growing districts of grain. Research on it will benefit to the agriculture of the whole region. Furthermore, energy balance is the basis for simulating heat and water transfer in crop canopy. Temperature reflects the condition of plant objectively. Meteorological factors such as air temperature, humidity and wind speed as well as soil temperature are the ambient conditions that affect the activity of plants. Canopy temper...

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