| 有效水下限在土壤墒情评估中的应用 |
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| 引用本文： | 代海燕,孙小龙,那顺.有效水下限在土壤墒情评估中的应用[J].农学学报,2013,3(5):31-33. |
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| 作者姓名： | 代海燕 孙小龙 那顺 |
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| 作者单位： | 内蒙古气象局生态与农业气象中心,呼和浩特,010051 |
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| 基金项目： | 公益性行业(气象)科研专项"中国北方农牧交错带生态系统监测评估技术开发" |
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| 摘 要： | 现行干旱和土壤墒情评估都是以田间持水量为土壤有效水的上限,然后根据经验值划分评定,此方法不能体现较低土壤相对湿度在不同地区上的差异。因此,笔者把有效水下限(土壤凋萎湿度)应用到墒情评估工作中,改进了以往土壤墒情评定单一性。该方法充分利用各站点信息,评定结果在土壤有效性上直观、准确,对地方干旱监测和土壤墒情评估具有重要指导意义。
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| 关 键 词： | 干旱 土壤墒情 墒情等级 土壤水分物理性质 |
| 收稿时间： | 2013/3/12 0:00:00 |
| 修稿时间： | 2013/4/16 0:00:00 |
The Application of Effective Water Lower Limit in the Assessment of Soil Moisture |
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| Dai Haiyan
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Sun Xiaolong
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Na Shun
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Yang Xiaohua.The Application of Effective Water Lower Limit in the Assessment of Soil Moisture[J].Journal of Agriculture,2013,3(5):31-33. |
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| Authors: | Dai Haiyan Sun Xiaolong Na Shun Yang Xiaohua |
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| Institution: | (Ecology and Agricultural Meteorology Centre of Inner Mongolia,Hohhot 010051,Inner Mongolia,China) |
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| Abstract: | The current drought and soil moisture content evaluation all using field capacity for available soil water cap classification evaluation, this method can not reflect low relative humidity of soil in different area differences. The paper based on soil water physical properties of automatic meteorological soil water station, put forward the new soil moisture level, through making full use of the site information provide more specific and accurate evaluation criteria, which avoided the soil sampling random error. It was important for automatic soil moisture station applied to regional drought monitoring and evaluation. |
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| Keywords: | Soil Water Physical Properties |
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