气候因子对科尔沁草原植物物候期的影响研究

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为深入探究气候因子对草原植物物候期的影响,选择内蒙古科尔沁草原为研究区域,基于1993-2019年科尔沁草原植物蒲公英、苍耳、车前子的生长期物候资料和气象预测资料,运用数理统计方法,分析气候因子对蒲公英、苍耳、车前子的萌芽期和开花期及枯黄期的影响.结果 表明,科尔沁草原植物物候期主要是受气温的影响,其次是降水量的影响,日照影响最小;1993-2019年,科尔沁草原植物的物候期总体呈现提前趋势,说明气候因子对科尔沁草原植物影响较大;蒲公英、苍耳、车前子的物候期中,萌芽期和开花期呈现提前趋势,枯黄期呈现推后趋势.此为进一步研究草原植物的季节性现象与环境的周期性变化关系提供参考.
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