气象要素对浅层土壤水分影响的灰色关联分析  

Grey Correlation Analysis of Influence of Meteorological Factors on Shallow Soil Moisture

作　　者：武艳娟[1] 吕景华 

机构地区：[1]内蒙古自治区气象局,呼和浩特010051 [2]呼和浩特市气象局,呼和浩特010020

出　　处：《中国农学通报》2015年第20期160-165,共6页Chinese Agricultural Science Bulletin

摘　　要：为深入研究呼和浩特市土默特左旗作物生长期,气象要素对土壤水分的影响,利用2012年4—9月土默特左旗气象站连续观测的有关数据,采用灰色关联分析方法,分析有降水天气和无降水天气条件下,日平均风速、日平均地面温度、日平均气温、日平均相对湿度4个气象要素对日10 cm土壤水分的影响。结果表明,有降水天气,各气象因素重要性排序为:日平均风速>日平均相对湿度>日平均气温>日平均地面温度;无降水天气,各气象因素重要性排序为:日平均相对湿度>日平均风速>日平均气温>日平均地面温度。研究表明,不同天气条件下,同一气象因素可能对同一层土壤水分的影响程度不同。因此,关注土壤水分的变化,应根据天气条件的不同,进一步深入细致的研究影响的主要因素及影响程度,以便更好地掌握土壤水分变化的规律,有效利用土壤水分资源。Based on the continuous observation data from April to September in 2012 of Tumotezuoqi Meteorology Station, the author discussed the influence of meteorological factors on shallow soil moisture with grey correlation analysis. The results showed that, under rainfall weather condition, the order was daily average wind speed〉daily average relative humidity〉daily average air temperature〉daily average ground temperature, and under no rainfall weather condition, the order was daily average relative humidity〉daily average wind speed〉daily average air temperature〉daily average ground temperature. The research showed that one meteorological factor might have different impacts on soil moisture of the same layer under different weather conditions. In order to understand the change detailed research on major influencing factors different weather conditions. of soil moisture and make full use of water resource in soil, and their influencing degree should be conducted according to

关 键 词：气象因素 土壤水分 浅层 灰色关联分析 

分 类 号：S161.9[农业科学—农业气象学]