包头地区近46年农业热量资源的时空变化特征  

Temporal and Spatial Variation Characteristics of Agricultural Heat Resources in Baotou Area in Recent 46 Years

作　　者：李宏伟[1] 李秀华[2] 王林海[1] 麻旭东[1] 胡雪[2] 王玉静[2] 乌兰[2] LI Hong-wei;LI Xiu-hua;WANG Lin-hai(Meteorological Bureau of Baotou,Baotou,Inner Mongolia 014030;Institute of Agricultural Sciences of Baotou,Baotou,Inner Mongolia 014013)

机构地区：[1]内蒙古自治区包头市气象局,内蒙古包头014030 [2]内蒙古自治区包头市农业科学研究所,内蒙古包头014013

出　　处：《安徽农业科学》2018年第35期149-154,共6页Journal of Anhui Agricultural Sciences

基　　金：包头市气象局科技创新基金项目

摘　　要：依据1970—2015年包头地区7个气象台站年均气温、≥10℃年活动积温和无霜期的数据,采用气候倾向率法和IDW插值法,研究包头地区近46年气温、积温和无霜期的时空变化特征。结果表明:包头地区近46年年均气温、≥10℃活动积温和无霜期年代际变化为大致随年代的增加而增加,增温幅度为0.46℃/10 a,年平均气温46年升高约2.12℃;≥10℃年活动积温以99.38℃·d/10 a的倾向率升高,46年增加约457.2℃·d;年均无霜期以4.76 d/10 a的倾向率延长,46年延长约22 d;平均气温、≥10℃年活动积温和无霜期的空间特征为包头市区和土默特右旗明显高于达茂旗和固阳县,年代间变化特征大致为低值区范围在逐渐缩小,高值区范围在逐渐扩大,年代间增暖的空间特征明显。Based on the data of annual mean temperature,≥10℃accumulated temperature and mean frost free period during1970-2015from7meteorological stations in Baotou area,using the linear regression analysis and IDW interpolation,the temporal and spatial variation characteristics of heat resources were analyzed.The results showed that:Interdecadal change of agricultural heat resources in Baotou area generally increased in recent46years;Annual mean temperature was increased by the tendency rate of0.46℃/10a and rose about2.12℃in recent46years;≥10℃accumulated temperature was increased by the tendency rate of99.38℃·d/10a and increased by457.2℃·d;Frost free period was extended by the tendency rate of4.76d/10a and extended for22d.The spatial characteristics of annual average temperature,≥10℃accumulated temperature and frost-free period were as higher in Baotou,Tumd Right Banner and lower in Darhan Muminggan Joint Banner,Guyang County.The variation feature of the low value region was gradually narrowing,and the high value area was gradually expanding.The spatial characteristics of warming were obvious during decades.

关 键 词：农业热量资源 时空变化 包头地区 

分 类 号：S161.2[农业科学—农业气象学]