1960—2019年安康市气候季节及不同等级积温变化特征  

Temporal Variations of Climate Seasons and Different Levels of Integrated Temperature in Ankang City from 1960 to 2019

作　　者：安彬[1,2,3] 肖薇薇 朱妮[4] AN Bin;XIAO Weiwei;ZHU Ni(School of Chemistry&Environment/Academician and Expert Workstation of Shanxi Province,AnkangUniversity,Ankang 725000,Shaanxi,China;Research Center for Rural Revitalization in Southern Shaanxi,Ankang 725000,Shaanxi,China;Shaannan Eco-economy Research Center,Ankang 725000,Shaanxi,China)

机构地区：[1]安康学院化学与环境学院/陕西省科协院士专家工作站,陕西安康725000 [2]安康市汉江水资源保护与利用工程技术研究中心,陕西安康725000 [3]陕南乡村振兴研究中心,陕西安康725000 [4]陕南生态研究中心,陕西安康725000

出　　处：《安康学院学报》2024年第3期122-128,共7页Journal of Ankang University

基　　金：陕西教育厅自然科学计划项目“汉江生态经济带生态系统服务演变及其驱动机制研究”(22JK0233);安康学院校级科研平台项目“汉江生态经济带高质量发展与水资源保护利用关系研究”(2023AYPY07)。

摘　　要：揭示气候变暖背景下安康市气候季节、积温等气温指标的变化特征,为区域人类活动适应气候变化、调整农业生产提供科学依据。基于安康站1960—2019年逐日平均气温数据,利用5 d滑动平均、线性拟合等方法,探讨安康市气候季节和不同等级积温(≥5℃、≥10℃、≥15℃、≥20℃)的初日、持续日数和气(积)温的时序变化规律。结果表明:(1)1960—2019年安康年均气温以0.012℃·a^(-1)的速率显著上升(P<0.01),并在1997年发生升温突变;气候季节和不同等级积温的初日、持续日数等气温指标的年代际变化特征各异。(2)1960—2019年安康气候季节平均气温均呈不显著微弱上升趋势,其中以春季(0.012℃·a^(-1))增温幅度最大;春季的初日(持续日数)显著提前(增加),夏、秋和冬季一致表现为初日不显著推迟、持续日数不断缩短的趋势,其中推迟(缩短)程度以夏(秋)季最为突出。(4)1960—2019年安康≥5℃、≥10℃、≥15℃和≥20℃积温一致表现出初(终)日提前(推迟)、持续日数和活动积温增加的趋势。其中以≥15℃积温的初日、持续日数和活动积温提前(增加)最多,终日以≥10℃积温推迟最为明显。因此,安康市气候季节和积温对全球气候变暖现象响应明显。Revealing variation characteristics of temperature indicators such as climate season and integrated temperature(IT)in Ankang city under the background of climate warming,provides scientific basis for regional humans to adapt to climate change and adjust agricultural production.Based on the daily average temperature data from Ankang meteorological station during 1960~2019,this paper uses methods such as 5d exponential moving average and linear fitting to explore the temporal variation patterns of the initial day,duration days and temperature,including climate seasonal temperature(CST)or active integrated temperature(AIT)of the climate season and four ITs in Ankang city with the thresholds of≥5,≥10,≥15,and≥20℃,respectively.The results showed that the average temperature in Ankang increased significantly at a rate of 0.012℃·a^(-1)(P<0.01)from 1960 to 2019,and an abrupt warming change occurred in 1997.The interdecadal variation characteristics of temperature indicators such as the initial day and duration days of climate seasons and four AITs vary.The average CST showed an insignificant and weak upward trend from 1960 to 2019 in Ankang,with the spring CST of 0.012℃·a^(-1) being the largest increase in all CSTs.The beginning date of spring was significantly earlier,and the duration day was significantly increasing;on the contrary,summer,autumn,and winter showed a consistent trend of no significant delay in the beginning date and a continuous shortening of the duration days,with the summer(autumn)season being the most prominent in terms of the degree of delay(shortening).From 1960 to 2019,all four AITs(≥5,≥10,≥15,and≥20℃)showed a of early(delayed)initial(final)days,and an increasing trend in duration days and AITs.Among them,the initial day,duration days,and AIT with≥15℃advanced(increased)the most,and the final day was most significantly delayed with≥10℃.In the future,multi cropping and late maturing crops can be achieved in the region,which can effectively enhance food security.As a c

关 键 词：平均气温 气候季节 积温 5 d滑动平均 安康市 

分 类 号：P467[天文地球—大气科学及气象学]