| 李新国,阿斯耶姆·图尔迪,刘彬,海米提·依米提.近50年开都河流域下游降水和气温变化特征分析[J].干旱地区农业研究,2013,31(3):252~259 |
| 近50年开都河流域下游降水和气温变化特征分析 |
| Variation features of precipitation and air temperature in lower reaches of Kaidu River Basin of Xinjiang during recent 50 years |
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| DOI：10.7606/j.issn.1000-7601.2013.03.41 |
| 中文关键词: 降水 气温 变化特征 开都河流域下游 |
| 英文关键词:precipitation air temperature change characteristics the lower reaches of Kaidu River Basin |
| 基金项目:国家自然科学基金项目(41061025，U1138302)；新疆维吾尔自治区高校科研计划重点项目(XJEDU2011139) |
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| 中文摘要: |
| 采用开都河流域下游焉耆县、和静县、和硕县三个气象站1960-2009年气温和降水观测资料,以线性趋势函数,M-K突变检验等方法,分析开都河流域下游气温和降水的年际变化、季节变化特征。研究结果表明:(1)焉耆县、和静县与和硕县的年平均气温呈上升趋势,年平均气温线性拟合增长率分别为0.366℃·10a-1、0.256℃·10a-1、0.033℃·10a-1。(2)和硕县月平均最低气温呈现下降趋势,而焉耆县与和静县平均最高气温、最低气温均呈上升趋势；从季节年际变化来看,三个县四季气温均有增加趋势,冬季增温明显,秋季平均气温的年际变化幅度与年平均气温的年际变化幅度相似。(3)三个县年降水量距平值呈下降-上升-下降特征,降水量有微弱增多趋势。(4)和静县与和硕县两站气温异常,焉耆县降水异常,气温突变均出现在20世纪90年代,而且突变发生较频繁。 |
| 英文摘要: |
| Through the data of air temperature and precipitation from 1960 to 2009 at the three stations of Yanqi, Hejing, and Heshuo County, and using methods of linear fitting and Mann-Kendall test, seasonal and annual changes of air temperature and precipitation in lower reaches of Kaidu River Basin were
characterized in this study. The results indicated that:(1)Annual average temperature of these three counties showed an escalating trend. The linear fitting growth rates of these three counties are 0.366℃·10a-1,0.256℃·10a-1 and 0.033℃·10a-1. (2)Mean maximum tempera-ture and the mean minimum temperature of Yanqi
and Hejing County showed an ascending trend, while monthly
mean minimum temperature in Heshuo county showed a decreasing trend. As for as seasonal and annual temperature alterna-tions are concemned, seasonal temperature of all these three counties showed an increasing trend. Temperature increase in winter is significant. The inter-annual alternation extent of fall average temperature is at same range of inter-annual alter-nation of annual average temperature. (3)Annual precipitation anomalies of three counties appeared down-up-down trend. (4)Lapse rate was abnormal in three counties, and precipitation rate was abnormal in Yanqi county. Abrupt at-mospheric temperature change occurred frequently and all of them ocurred in the 1990s. |
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