人民黄河Issue(7)：16-21,6.DOI:10.3969/j.issn.1000-1379.2015.07.005
近52a黄河源区降水量和气温时空变化特征
Characteristics of Precipitation and Temperature in Source Region of the Yellow River in Recent 52 Years
摘要
Abstract
Using the precipitation and temperature data of 8 meteorological stations over the source region of the Yellow River from 1960 to 2012,the spatial-temporal variability characteristics of precipitation and temperature were analyzed by linear trend analysis,moving average method,cumulative anomaly methods and regression analysis,and the differences of precipitation and temperature change in the source re-gion of the Yellow River were revealed. The results show that a)the temperature of the source region of the Yellow River rises quickly with a rise rate of 0. 29 ℃ / 10 a. The rise rate is higher than that of the whole Qinghai-Tibet Plateau,and is considered as an abnormal warming area in China. The annual precipitation increases slightly with a rate of 1. 92 mm/ 10 a. The increase rate is lower than that of the whole Qinghai-Tibet Plateau;b)from the moving average curve for five years,the variation trends of precipitation and temperature are different in the source region of the Yellow River from 1960 to 2012,the precipitation is significant higher in the late 1970s to the mid-1980s,after 1986,the precipitation decreases rapidly until 2004,after that the precipitation continues to rise. The temperature is significant lower in the late 1970s to the mid - 1980s,after 1986,the temperature quickly rises and comes into the high temperature period;c)the seasonal varia-bility trend of precipitation and temperature is different. Precipitation in spring,summer,and winter is increased. However,precipitation in autumn shows a trend of decrease and;d)the spatial distribution of precipitation is remarkable in the source region of the Yellow River,and precipitation decreases from southeast to northwest. Temperatures are increased from west to east,north,southeast area,showing a concen-tric circle that the western region as the center,and temperatures are increased to the surroundings.关键词
时空变化/降水量/气温/1960-2012年/黄河源区Key words
spatial-temporal change/precipitation/temperature/period of 1960 - 2012/source region of the Yellow River分类
天文与地球科学引用本文复制引用
李晓英,姚正毅,王宏伟,肖建华..近52a黄河源区降水量和气温时空变化特征[J].人民黄河,2015,(7):16-21,6.基金项目
国家重大科学研究计划项目（2013CB956000）。 （）
