陕西关中西部近50年气候生长期的变化特征  

Change Characteristics of Climate Growing Period in Western Guanzhong Shaanxi in Recent 50 Years

作　　者：王春娟 床晨阁 

机构地区：[1]凤翔县气象局,陕西凤翔721400 [2]凤翔县西街中学,陕西凤翔721400

出　　处：《农学学报》2015年第11期53-57,共5页Journal of Agriculture

基　　金：陕西省气象局科技创新基金项目"宝鸡主要农作物对气候变化的响应研究"(2010M-28)

摘　　要：为了研究气候变暖背景下关中西部气候生长期的变化规律,用现代气候变化理论与数理统计方法,分析宝鸡市11个气象站1961—2010年逐日平均气温记录。结果表明,在近50年中,宝鸡市日平均气温≥0℃和≥10℃的气候生长期显著增加,1981—2010年是气候生长期增加趋势最明显的时期,2007年是近50年气候生长期最长的年份。渭河川道区气候生长期最长,塬区及千河河谷一带增长趋势最明显,北部山区比南部山区气候生长期长。近50年,关中西部气候生长期显著增加,总农事季节延长,作物生长发育空间扩展,利于作物产量的提高。The paper aims to study the change law of climate growing period in western Guanzhong under thebackground of global climate warming. The author used modern climate variation theory and mathematicalstatistics to analyze the data of daily average temperature from 11 stations in Baoji City between 1961 and2010. The results showed that in the recent 50 years, there was a significant increase of climate growing periodthat had daily average temperature more than 0℃ and more than 10℃. Growing period had the most obviousrising trend during 1981- 2010. Particularly, it had the longest period in 2007. Weihe River Area had thelongest climate growing period, while that of Yuan Area and Qianhe Valley had the most remarkable growingtrend. What’s more, there was a longer growing period in the northern mountainous area than that in the south.The growing period in western Guanzhong increased rapidly in the recent 50 years, so that both the farmingseason and the crop growing time extended, which were good for yield increase.

关 键 词：气候生长期 趋势变化 关中西部 陕西 

分 类 号：S162.3[农业科学—农业气象学]