干旱区生态环境知识资源中心(Arid): 宁夏典型牧区盐池县降水及可利用降水多时间尺度变化特征分析

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	宁夏典型牧区盐池县降水及可利用降水多时间尺度变化特征分析
其他题名	Analysis on multi-time scale variation characteristics of precipitation and available precipitation during 1954~2019in Yanchi area of Ningxia
	汤英; 丁成翔; 徐利岗; 周乾
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2021
卷号	56 期号:5 页码:101-109
中文摘要	【目的】掌握宁夏半干旱风沙草原区降水及可利用降水年内和四季分配、丰枯振荡周期及未来变化趋势,为当地天然草场修复、人工草地及作物科学灌溉提供依据.【方法】以盐池县为研究区,利用区域内国家标准气象站1954~2019年月降水及气温资料,运用Morlet小波分析、Mann-Kendall法及气候趋势系数等方法分析盐池县降水量(P)、陆面蒸发量(E)及可利用降水量(Pe)的时空变化及其未来趋势.【结果】盐池县多年平均降水297.4mm,Pe为55.4mm,6~9月降水占全年的80.9%,6月蒸发系数最高为0.94;夏季的Pe最大为35.2mm;占全年的65.3%,冬季最小为0.5mm;Pe存在3a、5a和10a主周期.【结论】预测未来年降水量将以5.3mm/10a增幅显著增加,年可利用降水量则以1.5mm/10a的降幅减少,夏季、秋季和冬季Pe呈增加趋势,变幅0.1~1.3mm/10a.
英文摘要	【Objective】To find out the distribution of precipitation and available precipitation during the year and seasons,the cycle of abundant and shortage and the changing trend in the future in the semi-arid sandy grassland area of Ningxia,at the same time,to provide the basis for the restoration of natural grassland, artificial grassland and scientific irrigation of crops.【Method】Focus on Yanchi County,using the Morlet wavelet analysis,Mann-Kendall method and climate trend coefficient method,the characteristics of precipitation on the multiple-time scale change and variability tendency and gradient of precipitation(P), continental evapotranspiration(E)and available precipitation(Pe)are analyzed by the monthly precipitation and temperature data of the national standard weather station in the region from 1954to 2019.【Result】 The average annual precipitation in Yanchi area is 297.4mm,and the Peis 55.4mm.The maximum Peis 21.7mm in August,80.9%of the whole year is from June to September,and the highest evaporation coefficient is 0.94in May and June.The maximum Peis 35.2mm in summer,accounting for 65.3% of the whole year,and the minimumPeis 0.5mm in winter.Pehas a main cycle of 3a,5aand 10a,which has been dominated by 10aoscillation cycle since the 1960s.【Conclusion】Annual precipitation will increase significantly by 5.3mm/10a,and available precipitation will be reduced by 1.5mm/10a,and Pe will increase in summer,autumn and winter.The trend is not significant,the amplitude is 0.1~1.3mm/10a.
中文关键词	宁夏典型牧区 ; 降水量 ; 可利用降水量 ; 多时间尺度分析 ; 趋势分析
英文关键词	Mann-Kendall法 typical pastoral areas in Ningxia precipitation available precipitation multiple time scales analysis trend analysis Mann-Kendall method
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:7104853
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377610
作者单位	汤英, 宁夏水利科学研究院, 银川, 宁夏 750021, 中国.; 徐利岗, 宁夏水利科学研究院, 银川, 宁夏 750021, 中国.; 周乾, 宁夏水利科学研究院, 银川, 宁夏 750021, 中国.; 丁成翔, 青海大学畜牧兽医科学院,青海省畜牧兽医科学院, 西宁, 青海 810016, 中国.
推荐引用方式 GB/T 7714	汤英,丁成翔,徐利岗,等. 宁夏典型牧区盐池县降水及可利用降水多时间尺度变化特征分析[J],2021,56(5):101-109.
APA	汤英,丁成翔,徐利岗,&周乾.(2021).宁夏典型牧区盐池县降水及可利用降水多时间尺度变化特征分析.甘肃农业大学学报,56(5),101-109.
MLA	汤英,et al."宁夏典型牧区盐池县降水及可利用降水多时间尺度变化特征分析".甘肃农业大学学报 56.5(2021):101-109.