近30a新疆哈密地区的径流变化特征  

Runoff variation characteristics in Hami region during recent 30 years

作　　者：张昕[1] 李忠勤[1,2] 张国飞[1] 孙美平[1] 

机构地区：[1]西北师范大学地理与环境科学学院,甘肃兰州730070 [2]中国科学院寒区旱区环境与工程研究所、冰冻圈科学国家重点实验室,中国科学院天山冰川站,甘肃兰州730000

出　　处：《甘肃农业大学学报》2014年第3期113-119,共7页Journal of Gansu Agricultural University

基　　金：国家自然科学基金创新研究群体项目(41121001);国家自然科学基金项目(91025012、1141001040、41101066);国家重点实验室自主项目(SKLCS-ZZ-2012-01-01);国家自然科学青年基金(41201065)

摘　　要：以哈密地区近30a的气象和径流观测数据为基础资料,利用线性趋势和Mann-Kendall突变法对该地区的径流变化特征及其径流变化与气候变化的关系进行了分析.结果表明：哈密地区径流量主要集中在5-9月份,且7月份径流量达到高峰,而10月至次年3月的径流量相对较少.哈密地区径流的年际变化主要分为2种情况,有冰雪融水补给的区域径流量呈递增趋势,无冰雪融水补给区的径流量表现出明显的递减趋势.分析表明该区月径流量与消融期气温呈明显的指数关系,当消融期气温大于15℃时,径流量呈加速增长.By using meteorological date and runoff date of Hami region during recent 30 years and Mann-Kendall method,runoff change characteristics and the relationship between runoff and climate were analyzed.The results showed that runoff was mainly concentrate in May and September,runoff reached to peak in July,October to the following in March was relatively small.The interannual runoff change was mainly divided into two situations,for the area which supplied by ice and snow melt water had an increasing trend,with the area which supplied by no ice and snow melt water showed obvious decreasing trend.Analysis showed that the monthly runoff and the temperature of ablation period had obvious index relationship,when the temperature of ablation period was greater than 15℃,runoff was accelerated growth.

关 键 词：哈密地区 径流变化 MANN-KENDALL 气候变化 

分 类 号：P426.6[天文地球—大气科学及气象学]