1961~2020年三江源区气温时空分布特征  

ANALYSIS OF SPATIAL AND TEMPERATURE CHARACTERISTICS OF TEMPERATURE IN SANJIANGYUAN REGION FROM 1961 TO 2020

作　　者：李兴 李金凤 祁栋林[2] 陈宏松 石秀云 LI Xing(Qinghai Geermu Meteorological Bureau,Geermu Qinghai 816009,China)

机构地区：[1]青海省格尔木市气象局,青海格尔木816099 [2]青海省气象科学研究所,青海西宁810001

出　　处：《青海草业》2024年第2期61-68,共8页Qinghai Prataculture

摘　　要：为深入研究三江源区气温变化特征及升温机制,利用三江源区14个气象站1961~2020年近60a气温资料,通过滑动平均、插值法、滑动t检验等方法对气温变化的特征和突变进行分析和检验。结果表明:三个源区年、季气温出现多次冷暖波动过程,整体均呈显著增温趋势;长江、黄河和澜沧江源区增温幅度分别为0.37℃/10a、0.30℃/10a和0.38℃/10a,澜沧江源区升温幅度最大;冬季升温幅度最大,秋季次之,春季最小;长江源区以久治县,黄河源区以玛多县,澜沧江源区以囊谦县为增温中心,自西向东,由北向南呈逐渐增加的趋势;气温上升趋势中三个源区均存在突变性,长江源区发生在2004年,黄河和澜沧江源区均发生在1997年;海拔高度和下垫面的差异是导致增温幅度不同的主要原因。In order to study the characteristics of temperature change and the mechanism of temperature rise in the Sanjiangyuan region,the characteristics and abrupt changes of temperature change were analyzed and tested by moving average,interpolation method and sliding t test based on the temperature data of 14 meteorological stations in the Sanjiangyuan region from 1961 to 2020.The results showed that the annual and seasonal temperatures in the three source regions have experienced multiple cold and warm fluctuations,and the overall trend was significantly warming.The warming amplitudes of the Yangtze River,the Yellow River and the Lancang River source region were 0.37℃/10a,0.30℃/10a and 0.38℃/10a,respectively,and the Lancang River source region had the largest warming amplitude.The temperature rise was the largest in winter,followed by autumn,and the smallest rise in spring.The source of the Yangtze River to Jiuzhi area,the source of the Yellow River to Maduo area,the source of the Lancang River to Nangqian area were the warming center,which showed gradually increasing trend from west to east and north to south.In the rising trend of temperature,there were mutations in the three source regions.The source region of the Yangtze River occurred in 2004,and the source regions of the Yellow River and Lancang River occurred in 1997.The differences in altitude and underlying surface were the main reasons for the different warming rates.

关 键 词：三江源区 气温 时空差异 

分 类 号：S812.1[农业科学—草业科学]