| 通辽市近45年农业水资源变化分析 |
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| 引用本文： | 张冬梅,王芳,杨恒山,刘霞,牛敏.通辽市近45年农业水资源变化分析[J].内蒙古民族大学学报,1999(3). |
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| 作者姓名： | 张冬梅 王芳 杨恒山 刘霞 牛敏 |
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| 作者单位： | 哲里木畜牧学院农学系!通辽028042(张冬梅，王芳，杨恒山，刘霞)，通辽市河西镇中学!通辽028000(牛敏) |
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| 摘 要： | 分析了通辽市近４５ 年降水、潜在蒸散及农田水分盈亏的变化，结果表明：年降水量在周期变化中具有减小的趋势，年降水量的稳定性增加，潜在蒸散波动上升。本世纪６０ 年代以来，春旱有所缓减，秋旱有所加剧
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| 关 键 词： | 降水 潜在蒸散 水分盈亏 |
The Change of Water Resources of Agriculture in Recent Forty-five Years in Tongliao City |
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| Zhang Dongmei,et al.The Change of Water Resources of Agriculture in Recent Forty-five Years in Tongliao City[J].Journal of Inner Mongolia University for Nationalities,1999(3). |
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| Authors: | Zhang Dongmei |
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| Abstract: | The change of precipitation, potential evapotranspiration and profit and loss of soil moisture in Tongliao city for the last forty-five years were analysed. The results show that: the trend of yearly precipitation has decreased, at the same time its fluxuation has also lessened; evapotranspiration, on the other hand has been increasing in a wave pattern; since the 1960s, spring drought has lightened in somewhat while autumn drought has become more serious. |
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| Keywords: | Precipitation Potential evapotranspiration Profit and loss of soil moisture |
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