近40a新疆阿拉尔垦区初终霜日及无霜期的变化特征  

Characteristics of the first and last frost dates and frost-free periods from 1961 to 2000 in Alar irrigated area of Xinjiang Province

作　　者：王建勋[1] 朱晓玲[2] 

机构地区：[1]塔里木大学植物科学学院,阿拉尔843300 [2]塔里木大学经济管理学院,阿拉尔843300

出　　处：《干旱区资源与环境》2011年第9期183-186,共4页Journal of Arid Land Resources and Environment

基　　金：国家软科学研究计划(2006GXQ3D172)子课题资助

摘　　要：根据阿拉尔气象站1961-2000年日平均气温资料,求其逐年初终霜日及无霜期持续天数,用最小二乘法分析时间序列变化特征及趋势。结果表明:近40a新疆阿拉尔垦区初霜日提前,终霜日推后,无霜期持续天数以0.359d/10a的不显著趋势减少;初终霜日及无霜期持续天数年际差异不明显,变化相对稳定。结论:鉴于无霜期持续天数缩短,种植业品种选择应以早熟为主。According to the daily average temperature material of Alar irrigated area 1961-2000 the first and last frost dates and the frost-free periods were calculated.Using least squares method time sequence change characteristic and tendency were analyzed.The results indicated： Near 40a first frost date of Xinjiang Alar irrigated area was ahead of time,the last frost date retarded,frost-free period reduced by the 0.359d/10a;Initially the difference of last frost date and the frost-free period among years was not obvious,its change was relatively stable.

关 键 词：阿拉尔垦区 初终霜日 无霜期 变化 

分 类 号：P467[天文地球—大气科学及气象学]