近60年来大伙房水库降水特征分析
|
摘要
利用大伙房水库站1950-2016年降水量资料,采用多指标、多方法对水库降水量的年内和年际变化特征进行分析。结果表明:降水量年内分配不均匀、年际变化大且具有阶段性。从年降水量变化趋势看,近60年来水库年降水量呈不显著减少趋势。
Based on the precipitation data from 1950 to 2016 on Dahuofang Reservoir station,the variation characteristics of precipitation are analyzed with multiple indexes and a series of methods.The results show that:1)Distribution of precipitation is uneven, and mainly focuses on July and August.The inter-annual variations are great,with significant difference between the wet year and dry year.2) The trend of precipitation reduction is insignificant in recent 60 years,with the abrupt points happening in 1961 and 1974.
Based on the precipitation data from 1950 to 2016 on Dahuofang Reservoir station,the variation characteristics of precipitation are analyzed with multiple indexes and a series of methods.The results show that:1)Distribution of precipitation is uneven, and mainly focuses on July and August.The inter-annual variations are great,with significant difference between the wet year and dry year.2) The trend of precipitation reduction is insignificant in recent 60 years,with the abrupt points happening in 1961 and 1974.
引文
[1]党皓飞,赵琳娜,巩远发.中国夏季降水的时空分布特征分析[J].成都信息工程学院学报,2015,30(6):609-615.
[2]许荷兰,宋子岭,马云东.全球变化下东北地区降水时空特征研究[J].长春理工大学学报(自然科学版),2007,30(3):114-117.
[3]刘新平,何玉惠,赵学勇,等.科尔沁沙地奈曼地区降水变化特征分析[J].水土保持研究,2011,18(2):155-158.
[4]王富强,李玉娟,吕振豫.东江流域降水演变特征及其影响因素分析[J].人民珠江,2016,37(1):49-54.
[5]陈仁升,康尔泗,杨建平,等.甘肃河西地区近50年气象和水文序列的变化趋势[J].兰州大学学报(自然科学版),2002,38(2):163-170.
[6]于延胜,陈兴伟.R/S和Mann-Kendall法综合分析水文时间序列未来的趋势特征[J].水资源与水工程学报,2008,19(3):41-44.
[2]许荷兰,宋子岭,马云东.全球变化下东北地区降水时空特征研究[J].长春理工大学学报(自然科学版),2007,30(3):114-117.
[3]刘新平,何玉惠,赵学勇,等.科尔沁沙地奈曼地区降水变化特征分析[J].水土保持研究,2011,18(2):155-158.
[4]王富强,李玉娟,吕振豫.东江流域降水演变特征及其影响因素分析[J].人民珠江,2016,37(1):49-54.
[5]陈仁升,康尔泗,杨建平,等.甘肃河西地区近50年气象和水文序列的变化趋势[J].兰州大学学报(自然科学版),2002,38(2):163-170.
[6]于延胜,陈兴伟.R/S和Mann-Kendall法综合分析水文时间序列未来的趋势特征[J].水资源与水工程学报,2008,19(3):41-44.