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当前位置: 首页 > 文章 > 阿勒泰地区不同时间尺度参考作物蒸散量的时空变化及影响 中国农业气象 2018 (8) 502-511
Position: Home > Articles > Spatio-Temporal Variation and Influencing Factors of Reference Crop Evapotranspiration at Different Time Scales in Altay Region Chinese Journal of Agrometeorology 2018 (8) 502-511

阿勒泰地区不同时间尺度参考作物蒸散量的时空变化及影响

作  者：
康丽娟;巴特尔·巴克;罗那那;薛亚荣;王孟辉
关键词：
参考作物蒸散量;时空变化;贡献率;气候变化;阿勒泰地区
摘  要：
基于阿勒泰地区7个气象站1961-2016年逐日气象数据和联合国粮农组织推荐的Penman-Monteith公式,估算该区域近56a参考作物蒸散量(ET_0),利用气候倾向率和反距离加权插值法分析ET_0及主要气象因子的时空变化特征,并采用相关系数和多元回归分析相结合的方法对不同尺度ET_0变化成因进行分析。结果表明:阿勒泰地区年平均ET_0为928.46mm,其气候倾向率为-10.90mm·10a~(-1)(P<0.01)。季节ET_0平均值由大到小依次为夏季、春季、秋季和冬季,夏季、秋季ET_0呈极显著降低趋势(P<0.01),冬季ET_0呈显著增加趋势(P<0.05)。6-7月ET_0最大,1月和12月ET_0最小,年内变化呈抛物线形。总体来看,各时间尺度ET_0空间分布特征基本一致,且呈现中西部地区ET_0显著减少趋势,年ET_0减少是夏季ET_0减少所致。各尺度ET_0变化主要贡献因子不一,但平均风速的极显著降低对ET_0减少的影响最大。
译  名：
Spatio-Temporal Variation and Influencing Factors of Reference Crop Evapotranspiration at Different Time Scales in Altay Region
作  者：
KANG Li-juan;Batur Bake;LUO Na-na;XUE Ya-rong;WANG Meng-hui;College of Pratacultural and Environmental Sciences, Xinjiang Agricultural University;
单  位：
KANG Li-juan%Batur Bake%LUO Na-na%XUE Ya-rong%WANG Meng-hui%College of Pratacultural and Environmental Sciences, Xinjiang Agricultural University
关键词：
Reference crop evapotranspiration;;Spatio-temporal variation;;Contribution rate;;Climate change;;Altay region
摘  要：
Based on the daily data of 7 meteorological stations in Altay region from 1961 to 2016, spatio-temporal change characteristics of ET_0 and meteorological factors were analyzed with climate change rate and inverse distance weighted interpolation method after calculation with the Penman-Monteith model. Then the multiple regression analysis method were combined with the correlation coefficient to study the causes of change of different time scales of ET_0. The results showed that the average annual ET_0 of Altay Region was 928.46 mm, the climate change rate of-annual ET_0 was-10.90 mm·10 y1(P<0.01). The seasonal average ET_0 from high to low was summer, spring, autumn and winter, summer ET_0 and autumn ET_0 showed a significant decrease trend(P<0.01), and winter ET_0 showed a significant increase(P<0.05). The maximum monthly average ET_0 appeared at June and July, the minimum value appeared at January and December, and annual distribution presented parabolic shape. Overall, the spatial distribution characteristics of ET_0 in difference time scales were basically consistent, and showed a significant decrease in ET_0 in the middle and west region, and the decrease in annual ET_0 was caused by the decrease of ET_0 in summer. The main contribution factor of different time scales of ET_0 change was different, but the significant decrease of average wind speed had the greatest effect on ET_0 reduction.

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