| 内蒙古奈曼麦田和沙丘微气象特性研究 |
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| 引用本文： | 李胜功,原园芳信.内蒙古奈曼麦田和沙丘微气象特性研究[J].高原气象,1993,12(4):400-408. |
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| 作者姓名： | 李胜功 原园芳信 |
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| 作者单位： | 中国科学院兰州沙漠研究所，日本农业环境技术研究所，中国科学院兰州沙漠研究所，中国科学院兰州沙漠研究所 甘肃省 兰州市730000，日本筑波，甘肃省 兰州市730000，甘肃省 兰州市730000 |
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| 摘 要： | 本文分析了内蒙古奈曼旗尧勒甸子村麦田冠层上方和流动沙丘的微气象特性，结果表明：（１）麦田和沙丘的反射率分别为２１％和３４％；（２）麦田白天约有６０％的净辐用于潜热交换，夜里净辐的大部分来自土壤热交换（３５％）和潜热交换（４１％）；沙丘白天的４８％的净辐射用于土壤热交换，夜里有５２％的净辐射由土壤热交换补给。（３）波文比在麦田和沙丘都是早晨和夜里大，白天小，（４）白天麦田上方的水汽压低于近麦层的，夜
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| 关 键 词： | 微气象 麦田 沙丘 内蒙古 |
STUDY ON MICROMETEOROLOGICAL CHARACTERISTICS OVER WHEAT FIELD AND SAND DUNE AT NAIMAN, INNER MONGOLIA, CHINA |
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| Li Shenggong.STUDY ON MICROMETEOROLOGICAL CHARACTERISTICS OVER WHEAT FIELD AND SAND DUNE AT NAIMAN, INNER MONGOLIA, CHINA[J].Plateau Meteorology,1993,12(4):400-408. |
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| Authors: | Li Shenggong |
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| Abstract: | In this paper, the micrometeorological characteristics and the heat budget over the wheat field and the sand dune in Yaoledianzi village, Naiman, Inner Mongolia are analyzed. The results show that: (1) Albedo for the wheat field and the sand dune is about 21% and 34%, respectively. (2) Over the wheat field, about 60% of the net radiation in daytime is spent for the latent heat flux, and about 41 % of the net radiation at night is supplied by the latent heat flux, about 35% by the soil heat flux. Over the sand dune, 48% of the net radiation in daytime is spent for the soil heat, and about 52% of the net radiation at night is provided by the soil heat. (3) Bowen ratio in the early morning and at night is higher than that in daytime. (4) The ratio of the wind speed (u5), at the lowest measurement site to that (u1) at the highest site is higher in daytime than at night, and higher over the sand dune than over the wheat field. Ratio of the friction velocity (u*) to the wind speed (u1) is lower in daytime than at night, and lower over the sand dune than over the wheat field. |
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| Keywords: | Micrometeorology Wheat field Sand dune |
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