引用本文:[点击复制]
[点击复制]
【打印本页】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览次   下载 本文二维码信息
码上扫一扫!
基于Penman-Monteith的江南丘陵地区地表参考蒸散量 和水分盈亏量特征分析
刘燕,刘友存,陈明,边晓辉,丁倩倩
0
(江西理工大学资源与环境工程学院,赣州 341000;江西理工大学建筑与测绘工程学院,赣州 341000)
摘要:
依据69个气象站点1951—2013年的气象资料,运用 Penman-Monteith方程计算出参考蒸散量,同时结合累积距平、反比距离插值、Mann-Kendall检验和小波分析等方法,从参考蒸散量和水分盈亏量的角度分析了江南丘陵地区地表水分变化特征。结果表明:①江南丘陵地区参考蒸散量夏季最高,冬季最低;水分盈亏量则是春季最高,秋季最低。年参考蒸散量呈缓慢上升趋势,且受气温突变影响,在1954年出现突变点;而年水分盈亏量呈波动下降趋势,受降水量突变影响,在1956年、1962年和2007年出现突变点,二者发生突变的时间都集中在20世纪50和60年代。②参考蒸散量的低值和水分盈亏量的高值区域主要出现在高海拔地区,空间上东部地区的参考蒸散量和水分盈亏量都高于西部地区。除少数站点外,参考蒸散量的趋势系数均为正值,呈现缓慢上升;水分盈亏量的趋势系数均为负值,呈现缓慢下降。③江南丘陵地区的参考蒸散量和水分盈亏量由于分别受到相对湿度和降水量周期变化的影响,都存在以短周期震荡为主的变化特征,其中水分盈亏量在秋季还存在中长周期震荡。
关键词:  参考蒸散量  水分盈亏量  突变分析  小波分析  江南丘陵
DOI:10.13610/j.cnki.1672-352x.20190619.001
基金项目:国家自然科学基金(41861002, 51664025), 江西省自然科学基金项目(20181BAB203026), 江西省创新创业高层次人才“知名专家”知名专家长期项目(青年类), 赣州市重点研发计划项目(赣市财教字[2017]179号)和江西理工大学“清江学者”拔尖人才科研启动项目(JXUSTQJBJ2017002)资助。
Analysis on the variation characteristics of surface water in the Jiangnan Hills based on the Penman-Monteith method
LIU Yan,LIU Youcun,CHEN Ming,BIAN Xiaohui,DING Qianqian
(School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000;School of Architectural and Surveying &Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000)
Abstract:
In this paper, the meteorological data of 69 meteorological stations from 1951 to 2013 were selected and the reference evapotranspiration was calculated using the Penman-Monteith equation. Combined with the methods of cumulative and inverse distance interpolation, Mann-Kendall test, wavelet analysis, etc. the surface water condition was analyzed from the aspect of reference evapotranspiration and water deficit. The results showed: ①the reference evapotranspiration in the Jiangnan hills from 1951 to 2013 showed a slowly increasing trend, and there was an abrupt point around 1954. The water deficit showed a fluctuating declining trend and appeared abrupt points in 1956, 1962, and 2007 respectively. The time of abrupt points in weather stations was concentrated in the 50s and 60s of the 20th century. The reference evapotranspiration was the highest in summer and the lowest in winter; the water deficit was the highest in spring and lowest in autumn. ② In the Jiangnan hills for nearly 63 years, the low value of reference evapotranspiration and the high value of water deficit mainly occur in high altitude areas, but in the space, the east is higher than the west. Except for a few sites, the reference evapotranspiration trend coefficient is positive, showing a slow rise; the water deficit coefficient is negative, showing a slow decline.③ As affected by the cyclical changes of relative humidity and precipitation respectively, the reference evapotranspiration and water deficit in the Jiangnan hills are variations in the characteristics of short- period
Key words:  reference evapotranspiration  water deficit  mutation analysis  wavelet analysis  Jiangnan hills

用微信扫一扫

用微信扫一扫