景电灌区降水与气温随时间变化特征分析  

Analysis of precipitation and temperature characteristics with time in Jingdian Irrigation District

作　　者：费良军[1] 李巧丽 史中兴 李静思[1] 刘利华[1] FEI Liangjun;LI Qiaoli;SHI Zhongxing;LI Jingsi;LIU Lihua(State Key Laboratory of Ecological Water Researches in Northwest Arid Region Cosponsored by Province and Ministry,Xi′an University of Technology, Xi′an,Shaanxi 710048, China;Gansu Jingtaichuan Irrigation Management Bureau, Jingtai, Gansu 730400, China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,陕西西安710048 [2]甘肃省景泰川电力提灌管理局,甘肃景泰730400

出　　处：《排灌机械工程学报》2021年第8期838-843,850,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51779205);甘肃省景泰川电力提灌灌区退(回归)水监测与利用研究项目(ZKGK-2016-023)。

摘　　要：为探明景电灌区近年来气候变化规律,深化对灌区气候变化的认识和理解,以甘肃省景泰县1983—2017年的降水及气温日数据为基础,运用线性倾向分析、Mann-Kendall趋势检验及小波分析等方法,研究了景电灌区降水与气温不同时间尺度的变化,并预测了灌区降水的发展趋势,结果表明:近35 a景电灌区降水量呈缓慢上升趋势,气候倾向率为0.38 mm/a,冬灌降水呈显著上升趋势,其余灌季均呈下降趋势;灌区年降水量变化存在7 a和11 a这2个主要的周期尺度;灌区近35 a平均气温和极高气温均呈显著上升趋势,气候倾向率分别为0.056,0.050℃/a,而极低气温上升趋势不明显;灌区各灌季平均气温均呈上升趋势.由此看出,景电灌区气候变化整体呈暖湿化趋势,灌季尺度上,仅冬灌期间呈现明显的暖湿化趋势,其余灌季呈暖干化趋势.In order to deepen the understanding of the climate change laws in Jingdian Irrigation District in recent years,based on the precipitation and temperature data from Jingtai Meteorological Station in Gansu Province from 1983 to 2017,the variation of precipitation and temperature at different time scales was studied and the abundance of precipitation in Jingdian Irrigation District by using linear trend analysis,Mann-Kendall trend test and wavelet analysis were predicted.The results show that the precipitation show a slow increase trend,the climate tendency rate is 0.38 mm/a,the precipitation in winter irrigation shows a significant upward trend and the others show a downward trend.There are two main periodic scales of annual precipitation change:7 years and 11 years,respectively.The average temperature and extremely high temperature show a significant upward trend,and the climate tendency rates are 0.056 and 0.050℃/a,respectively.But the trend of extremely low temperature is not obvious.The average temperature in all irrigation seasons show a upward trend.It can be seen that the climate change in Jingdian Irrigation District show a warm-humid trend.On irrigation season scale,winter irrigation shows an abvious warm-humid trend,but the other irrigation seasons show a warming and drying trend.

关 键 词：景电灌区 降水和气温 Mann-Kendall趋势检验 小波分析 降水预测 

分 类 号：S271[农业科学—农业水土工程]