| 近36年新疆巴州潜在蒸散量变化特征分析 |
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| 引用本文： | 谢新,陈仲梅,陈晓燕,等.近36年新疆巴州潜在蒸散量变化特征分析[J].新疆气象,2008,2(2):19-22. |
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| 作者姓名： | 谢新 陈仲梅 陈晓燕 等 |
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| 作者单位： | [1]巴州气象局,新疆库尔勒841000 |
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| 摘 要： | 在利用巴州11个地面气象观测站1971—2006年的逐月历史气候资料和联合国粮农组织（FAO）推荐的Penman—Monteith公式计算出巴州各地逐年潜在蒸散量的基础上，采取线性回归、最大熵谱、Mann-Kendall以及自然正交分解（EOF）等方法，对近36a巴州潜在蒸散量的时空变化特征进行了分析，结果表明：①近36a巴州潜在蒸散量总体呈递减趋势，递减倾向率为-42．1mm·（10a）^-1；②平均潜在蒸散量的年代际变化为：70-90年代，在蒸散量呈持续递减趋势，但进入21世纪以来的2001--2006年又呈回升之势；③近36a，巴州潜在蒸散量的变化不存在小于36a的显著周期；④突变检测表明，巴州潜在蒸散量于1980年发生了突变性的减小；⑤巴州ll站年潜在蒸散量的最主要空间分布特征均是同向变化；⑥巴州各地年平均潜在蒸散量与海拔高度和地理纬度具有良好的多元线性回归关系。
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| 关 键 词： | 新疆巴州 潜在蒸散量 变化特征 |
The Variation Characteristics of Annual Potential Evapotranspiration in Bazhou Region of Xinjiang in recent 36 years |
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| XIE Xin,CHEN Zhong-mei and CHEN Xiao-yan,et al.The Variation Characteristics of Annual Potential Evapotranspiration in Bazhou Region of Xinjiang in recent 36 years[J].Bimonthly of Xinjiang Meteorology,2008,2(2):19-22. |
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| Authors: | XIE Xin CHEN Zhong-mei and CHEN Xiao-yan |
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| Institution: | XIE Xin, CHEN Zhong-mei, CHEN Xiao-yan, REYANGULI (Bazhou Meteorological Bureau, Kuerle 841000, China) |
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| Abstract: | Make use of the climatic data during 1971--2006 observed by 11 meteorological stations in Bazhou regions of Xinjiang, the potential evapotranspiration in every station were calculated with the Penman-Monteith equation recommended by FAO in 1998, and the spatio-temporal changes of the variation characteristics of potential evapotranspiration in Bazhou regions were analyzed. The main results show that ： （ 1 ）The reduced tendency of potential evapotranspiration was remarkable in recent 36a, the decline tendency rate was -42.1mm ·（10a）^-1; （2）The interdecadal variation characteristics of potential evapotranspiration were declined sequentially at 1970s, 1980s and 1990s, but since the beginning of the 21st century, 2001--2006, it was presented to rise again; （3） In recent 36a, it does not have remarkable cyclical change on less than 36 years; （4）The abrupt change detection indicated that the annual potential evapotranspiration reduces suddenly in 1980; （5）The most main spatial distribution characteristics about the annual potential evapotranspiration were the synchronous variations; （6）the annual mean potential evapotranspiration have good multidimensional linear Regression relations with the altitude and latitude in Bazhou regions. |
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| Keywords: | Bazhou regions of Xinjiang potential evapotranspiration variation characteristic |
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