| 近50年内蒙古东部水热变化及对农业的影响 |
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| 引用本文： | 李喜仓,郭瑞清,杨丽桃,侯琼.近50年内蒙古东部水热变化及对农业的影响[J].地理科学,2009(5). |
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| 作者姓名： | 李喜仓 郭瑞清 杨丽桃 侯琼 |
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| 作者单位： | 内蒙古气候中心;内蒙古气象信息中心;内蒙古气象科学研究所; |
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| 基金项目： | 沈阳大气环境研究所环境安全研究开放实验室基金资助 |
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| 摘 要： | 利用内蒙古东部农业区25个气象站近50 a降水量、气温、日照时数和相应的产量资料,研究内蒙古东部主要产粮区水热变化与农业的关系。结果表明:近50 a该区气温增温速率高于全国平均增温速率,降水和日照时数存在减少趋势,增温幅度从西向东递增,有明显时段差异,尤其20世纪90年代以后暖干化趋势明显,水热匹配格局发生变化。降水是影响产量的主导因素,其次是温度因子。降水在Ⅰ-Ⅲ区主要影响时段是6~8月,而Ⅳ区是4~5月;生长季或夏季温差和平均最高气温对产量影响较显著,水分短缺和高温胁迫是造成减产的重要原因。
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| 关 键 词： | 水热变化 对农业的影响 胁迫 内蒙古东部 |
Changes of Precipitation and Temperature and Its Impacts on Agriculture in Recent 50 Years in Eastern Inner Mongolia |
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| Li Xi-cang,Guo Rui-qing,Yang Li-tao,Hou Qiong.Changes of Precipitation and Temperature and Its Impacts on Agriculture in Recent 50 Years in Eastern Inner Mongolia[J].Scientia Geographica Sinica,2009(5). |
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| Authors: | Li Xi-cang Guo Rui-qing Yang Li-tao Hou Qiong |
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| Institution: | Li Xi-cang1,Guo Rui-qing2,Yang Li-tao1,Hou Qiong3(1.Inner Mongolia Climate Center,Hohhot,Inner Mongolia 010051,2.Inner Mongolia Meteorological Information Center,3.Inner Mongolia Institute of Meteorological Sciences,Inner Mongolia 010051) |
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| Abstract: | Based on data of precipitation,air temperature and sunshine duration of 25 weather stations in recent 50 years and relevant yields data in the eastern farming belt of Inner Mongolia,the relationship between climate change and agriculture in main grain-produced area of the eastern Inner Mongolia was researched.The results showed that the warming rate of temperature in recent 50 years in the region was faster than that of the national average,however,precipitation and sunshine duration tended to decrease.The ... |
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| Keywords: | precipitation temperature impact on agriculture stress eastern Inner Mongolia |
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