摘要
基于乌鲁木齐站和喀什站1954—2008年气象资料,运用P-M法计算了各站点的潜在蒸散发量,运用Mann-Kendall非参数统计检验法统计分析了两站气象要素的变化趋势,并分析了各气象要素与潜在蒸散发量的相关性。结果表明:①1954—2008年,喀什站气温和相对湿度呈显著上升趋势,风速呈显著下降趋势,乌鲁木齐站气温呈显著上升趋势,风速和日照时数呈显著下降趋势;②气象要素的变化趋势不具有规律性,不同季节的变化趋势不同;③气温、风速、日照时数与潜在蒸散发量均呈正相关关系,相对湿度与潜在蒸散发量呈负相关关系,气温和相对湿度是乌鲁木齐站潜在蒸散发量的主要影响因素,气温和风速则是喀什站潜在蒸散发量的主要影响因素。
Based on the meteorological data of Urumqi and Kashi Stations during 1954 -2008, the Penman-Monteith method was selected to calculate the potential evapotranspiration, and the variation trends of meteorological factors, the correlation between meteorological factors and potential evapotranspiration of two stations were studied by using Mann-Kendall method. The results show that： ①during 1954 -2008, it has a significant rising trend of temperature and relative humidity in Kashi Station while the wind speed decreases significantly ; in Urumqi Station the temperature has a significant upward trend while the wind speed and sunshine hours decrease signifieantly;② the variation trends of meteorological factors have not any regular, the trend is different in four seasons; ③the correlation between the temperature, wind speed, sunshine hours and potential evapotranspiration is positive respectively, while it has a negative correlation between the relative humidity and potential evapotranspiration, the temperature and relative humidity are two main factors influencing the potential evapotranspiration in Urumqi Station, the temperature and wind speed are two main factors influencing the potential evapotranspiration in Kashi Station.
出处
《人民黄河》
CAS
北大核心
2012年第10期77-79,共3页
Yellow River
关键词
P—M法
趋势分析
相关分析
潜在蒸散发量
气象要素
新疆地区
P-M method
trend analysis
correlation analysis
potential evapotranspiration
meteorological elements
Xinjiang region
