Geographical Research, Volume. 39, Issue 10, 2415(2020)
Figures & Tables(10)
Fig. 2. Spatial pattern of precipitation variations in China from 1961 to 2016
Fig. 3. The changes in frequency and amount of precipitation in daytime and nighttime over China from 1961 to 2016; (a) and (b) are frequency of precipitation in daytime and nighttime, respectively; (c) and (d) are amount of precipitation in daytime and nighttime, respectively
Fig. 4. The changes of daytime and nighttime extremes precipitation (including heavy rain and torrential rain) in China from 1961 to 2016; (a) and (b) are frequencies of daytime and nighttime extreme precipitation, respectively; (c) and (d) are amount of daytime and nighttime extreme precipitation, respectively
Fig. 5. The changes in the frequencies (day) and amounts (mm) of daytime and nighttime extremes precipitation (heavy rain and torrential rain) in the nine river basins of China from 1961 to 2016. (a) and (b) are the heavy rain and torrential rain of daytime, (c) and (d) are the heavy rain and torrential rain of nighttime
Fig. 6. The contributions of annual daytime and nighttime heavy rain and torrential rain to annual precipitation in the nine river basins of China during 1961-2016
Fig. 7. The contributions of annual daytime and nighttime heavy rain and torrential rain to annual precipitation in the nine river basins of China in different periods. (a) represents the contribution of daytime heavy rain, (b) represents the contribution of daytime torrential rain, (c) represents the contribution of nighttime heavy rain, and (d) represents the contribution of nighttime torrential rain
Table 1. The study on daytime and nighttime precipitation changes based on station data in China
View tableView in ArticleTable 1. The study on daytime and nighttime precipitation changes based on station data in China
区域 时间序列 主要结论 文献来源 淮河流域 1961—2009年 昼夜降水总体呈北少南多分布;不同季节和不同强度等级降水昼夜差异显著。 [ 20 ]西南地区 1961—2016年 昼夜降水均呈递减趋势,其变化与大气环流因子变化密切相关。 [ 21 ]华北地区 1960—2014年 由东南向西北递减;夏季昼降水的显著减少是华北地区降水减少的主要原因之一。 [ 19 ]西北干旱区 1961—2005年 昼、夜降水量均呈显著增加趋势;降水量增加的主要由降水日数的增多所致。 [ 22 ]青藏高原 1961—2006年 大部分地区年均和季节的夜雨率均呈减少趋势,冬半年除外;昼雨天数大部分地区年、季都呈增多趋势。 [ 23 ]
Table 2. Average annual precipitation and arid/humid conditions in the nine river basins of China
View tableView in ArticleTable 2. Average annual precipitation and arid/humid conditions in the nine river basins of China
流域 年均白昼降水(mm) 年均夜间降水(mm) 年均总降水(mm) 干湿条件 内陆河流域 66.8 66.2 133.0 干旱区 松花江-辽河流域 282.5 257.7 540.2 湿润-半湿润区 海河流域 247.0 255.2 502.2 半湿润区 淮河流域 408.9 435.2 844.1 湿润区 珠江流域 837.0 741.4 1578.4 湿润区 东南诸河流域 842.4 755.1 1597.5 湿润区 西南诸河流域 347.3 463.8 811.1 湿润区 长江流域 522.5 633.3 1156.1 湿润区 黄河流域 219.0 230.9 449.9 半湿润-半干旱区
Table 3. Daytime and nighttime precipitation changes in the nine river basins of China during 1961-2016
View tableView in ArticleTable 3. Daytime and nighttime precipitation changes in the nine river basins of China during 1961-2016
流域名称 白昼降水量趋势 (mm/a) 白昼降水量 趋势标准差 夜间降水量趋势 (mm/a) 夜间降水量 趋势标准差 流域内站 点个数 内陆河流域 0.39 0.39 0.30 0.36 109 海河流域 -0.41 0.74 -0.32 0.63 37 淮河流域 -0.72 0.98 0.14 1.03 46 珠江流域 0.86 1.92 0.20 1.57 73 松花江-辽河流域 0.01 0.52 -0.15 0.58 110 东南诸河流域 2.40 0.88 2.06 1.05 36 西南诸河流域 0.28 0.89 -0.15 0.78 34 长江流域 -0.004 1.24 0.07 1.37 212 黄河流域 -0.09 0.53 -0.21 0.53 85
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Haijun DENG, Bin GUO, Yongqiang CAO, Zhongsheng CHEN, Yuqing ZHANG, Xingwei CHEN, Lu GAO, Ying CHEN, Meibing LIU.
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Received: Feb. 17, 2020
Accepted: --
Published Online: Apr. 23, 2021
The Author Email: CAO Yongqiang (caoyongqiang@lnnu.edu.cn)
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