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1961 -2014 年黄土高原地区 降水和气温时间变化特征研究
顾朝军; 高鹏; 孙文义; 赵广举
2017
Source Publication干 旱 区 资 源 与 环 境
Volume31Issue:3Pages:136-08
Abstract

 降水和气温是影响黄土高原地区生态建设的关键气象要素。以黄土高原 73 个气象站 1961 -
2014 年降水和气温实测资料为基础,采用 Mann - Kendall 法、Hurst 指数和小波分析等方法,研究了降水和气温
时间变化特征。结果表明:黄土高原地区年、春、夏及秋季平均降水量年际变化趋势均不显著(P >0. 05),但冬
季以 1. 41mm/10a 的倾向率显著上升(P <0. 01),且在 1971 年发生突变。年、春、秋、冬季平均气温均呈显著上
升趋势,且突变时间发生于 20 世纪 80 年代中期和 90 年代中期。73 站中,73. 9% 的站表现为朝着暖干化方向
发展,19. 2%的站呈现暖湿化态势,但冬季整个黄土高原暖湿化现象明显。降水量具有 5a 的第一主周期,气温
存在 13a 的第一主周期。

Other Abstract

Precipitation and temperature are the key meteorological elements that affect the vegetation restoration
in the Loess Plateau. Characteristics of climate changes in the Loess Plateau was analyzed by linear regression
method,Mann - Kendall test,Hurst exponent and wavelets analysis method based on daily precipitation and dai-
ly air temperature data observed at 73 meteorological stations across the Loess Plateau from 1961 to 2014. The
result showed that mean precipitation covered the Loess Plateau had no significant temporal trends in annual,
spring and summer,while precipitation in winter was in a significantly increasing trend with a rate of 1. 41mm/
10a,and emerged abrupt change in 1971. Annual mean temperature showed significantly increase trend with the
increasing rate of 0. 31℃ /10a,and nearly about 85% of stations showed significantly increase trend. The in-
creased rate of seasonal temperature is as follows: winter > spring > autumn > summer. Change points of an-
nual and seasonal temperature mostly appeared during mid - 1980s and mid - 1990s. Hurst exponent revealed
that climate change in the Loess Plateau was overall towards to warmer and dryer,but in some areas tended to be
warmer and wetter. The annual mean precipitation fluctuated significantly with the periods of 14 years,but annu-
al mean temperature fluctuated with periods of 13 years. Annual precipitation in the Loess Plateau was negatively
correlated with NOI,and there were also some correlation between seasonal precipitation and atmospheric circu-
lation index. Annual temperature showed no significant correlation with atmospheric circulation index,while
summer temperature was negatively correlated with PDO and winter temperature was positively correlated with
WP.

Keyword降水量 气温 Hurst 指数 Morlet 小波分析 黄土高原
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8355
Collection水保所知识产出(1956---)
Corresponding Author高鹏
Affiliation1.西北农林科技大学 水土保持研究所,杨凌 712100
2.中国科学院水利部 水土保持研究所,杨凌 712100
Recommended Citation
GB/T 7714
顾朝军,高鹏,孙文义,等. 1961 -2014 年黄土高原地区 降水和气温时间变化特征研究[J]. 干 旱 区 资 源 与 环 境,2017,31(3):136-08.
APA 顾朝军,高鹏,孙文义,&赵广举.(2017).1961 -2014 年黄土高原地区 降水和气温时间变化特征研究.干 旱 区 资 源 与 环 境,31(3),136-08.
MLA 顾朝军,et al."1961 -2014 年黄土高原地区 降水和气温时间变化特征研究".干 旱 区 资 源 与 环 境 31.3(2017):136-08.
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