[1]杨晓玲,丁文魁,孙占峰,等.近60年河西走廊东部气象干旱演变特征[J].水土保持研究,2022,29(01):242-248.
　YANG Xiaoling,DING Wenkui,SUN Zhanfeng,et al.Evolution Characteristics of Meteorological Drought in Eastern Hexi Corridor During Recent 60 Years[J].Research of Soil and Water Conservation,2022,29(01):242-248.
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近60年河西走廊东部气象干旱演变特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 29 期数: 2022年01期 页码: 242-248 栏目: 出版日期: 2022-02-20
Title:
Evolution Characteristics of Meteorological Drought in Eastern Hexi Corridor During Recent 60 Years
文章编号:
1005-3409(2022)01-0242-07
作者:
杨晓玲1,2, 丁文魁1, 孙占峰1, 聂 鑫2
(1.甘肃省武威市气象局, 甘肃 武威 733099; 2.中国气象局兰州干旱气象研究所, 兰州 730020)
Author(s):
YANG Xiaoling1,2, DING Wenkui1, SUN Zhanfeng1, NIE Xin2
(1.Wuwei Meteorological Bureau of Gansu Province, Wuwei, Gansu 733099, China; 2.Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China)
关键词:
河西走廊东部;  气温;  降水;  干旱;  演变特征
Keywords:
eastern Hexi corridor;  temperature;  precipitation;  drought;  evolution characteristics
分类号:
S423
文献标志码:
A
摘要:
为提高河西走廊东部气象干旱预测预警水平、防御干旱灾害、降低农业经济损失。以河西走廊东部5个自动气象站1960—2019年气温和降水量为基础,运用统计学方法分析了河西走廊东部的气温、降水和气象干旱的时空演变特征。结果显示:河西走廊东部年和农业季气温均为荒漠区和绿洲平原区明显高于浅山区,浅山区明显高于高寒山区; 年和农业季降水均为高寒山区多于浅山区,浅山区多于荒漠区和绿洲平原区。年和农业季气温随年份、年代呈显著升高趋势,年和农业季降水随年份、年代呈增多趋势。河西走廊东部年景干旱年数为北部浅山区多于绿洲平原区和南部浅山区,绿洲平原区和南部浅山区多于高寒山区,高寒山区多于荒漠区; 农业季干旱年数为高寒山区多于荒漠区,荒漠区多于绿洲平原区和南部浅山区,绿洲平原区和南部浅山区多于北部浅山区。年景和农业季干旱年随年数代呈先减少后明显增多趋势。年景和农业季各级别干旱年数变率较大,随着干旱级别的加重,干旱年数总体在减少,特旱年数最少。使用Д·A·ⅡeДb提出的大气干旱指数识别出的气象干旱事件和实际干旱事件基本一致,干旱等级也相对一致,说明该指数能够较好地监测到河西走廊东部干旱年份及干旱等级。
Abstract:
In order to improve the prediction and early warning level of meteorological drought, prevent drought disasters and reduce agricultural economic losses in eastern Hexi Corridor, based on the daily temperature and precipitation data of 5 automatic meteorological stations in eastern Hexi Corridor during 1960—2019, spatio-temporal evolution characteristics of temperature, precipitation and meteorological drought in eastern Hexi Corridor were analyzed by using statistical method. The result showed that annual and agricultural seasonal temperature in desert area and oasis plain area was higher than that in shallow mountain area, and that in shallow mountain area was higher than that in alpine mountain area; annual and agricultural season precipitation was more in alpine mountain area than that in smhallow mountain area, and that in shallow mountain area was more than that in desert area and oasis plain area in eastern Hexi Corridor; annual and agricultural seasonal temperature increased significantly over years, and annual and agricultural seasonal precipitation increased overs; drought years in northen shallow mountain area were more than those in oasis plain area and southern shallow mountain area, and those were more in oasis plain area and southern shallow mountain area than those in the alpine mountain area, and those were more in alpine mountain area than those in desert area; agricultural seasonal drought years were more in alpine mountain area than in desert area, and those were more in desert area than those in oasis plain area and southern shallow mountain area, and those are more in oasis plain area and southern shallow mountain area than those in northen shallow mountain area in eastern Hexi Corridor; annual and agricultural seasonal drought years decreased first and then increased obviously over years; variation rate of annual and agricultural seasonal drought years at all levels was larger, drought years decreased with increase of drought degree, and extra-drought years were the least. Meteorological drought events identified with atmospheric drought index proposed by Д·A·ⅡeДb are basically consistent with actual drought events, so that the index can monitor drought year and drought grade in eastern Hexi Corridor.

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备注/Memo

收稿日期:2021-01-20 修回日期:2021-02-19
资助项目:甘肃省基础研究创新群体项目(20JR5RA121); 武威市市列科研项目“气候变暖背景下石羊河流城农业干旱风险评估研究”(WW190103); 干旱气象科学资助项目“石羊河流域高影响灾害天气气候特征及形成机理分析研究”(IAM202016)
第一作者:杨晓玲(1971—),女,甘肃民勤县人,学士,高级工程师,主要从事天气预报及气候变化研究。E-mail:wwqxj6150343@163.com

更新日期/Last Update: 2022-02-20