基于DEM的黑龙江省10℃界限温度时空变化特征分析  

Analysis of Spatiotemporal Variation Characteristics of 10℃Critical Temperature Based on DEM in Heilongjiang Province

作　　者：张金峰[1] 陈农 闫敏慧[1] 徐占胜 杨宁 高玲[1] 吕欣陆 ZHANG Jinfeng;CHEN Nong;YAN Minhui;XU Zhansheng;YANG Ning;GAO Ling;LV Xinlu(Heilongjiang Meteorological Service Center,Harbin 150030;Nanjing University of Information Science and Technology,Nanjing 210044)

机构地区：[1]黑龙江省气象服务中心,哈尔滨150030 [2]南京信息工程大学,南京210044

出　　处：《中国农学通报》2023年第27期81-85,共5页Chinese Agricultural Science Bulletin

基　　金：黑龙江省自然科学基金联合引导项目“气候变化背景下黑龙江玉米生育期气候资源利用率评估研究”(LH2021D020)。

摘　　要：本研究基于黑龙江省1991-2020年逐日气温资料,探讨了黑龙江省≥10℃界限温度初日、终日的时空变化以及≥10℃有效积温与经纬度、海拔高度之间的参数关系和时空分布特征。结果表明:黑龙江省≥10℃有效积温与经纬度和海拔高度的相关性达到了极显著水平,有效积温地理计算模型模拟效果较好;研究期内≥10℃界限温度的起始日期呈提前态势,其提前趋势山地>平原,终止日期呈延后态势,其延后趋势平原>山地,初日提前和终日延后皆有利于有效积温累积;研究期内≥10℃有效积温呈增加态势,其分布具有明显地域特征,总体呈现由南向北逐渐减少,由山地向平原逐渐增多态势。Based on daily temperature data in Heilongjiang Province from 1991 to 2020,this study explored the temporal and spatial variations of the critical temperature of≥10℃at the beginning and the end of the day,as well as the parameter relationship and spatial-temporal distribution characteristics between the effective accumulated temperature of≥10℃and the longitude,latitude and altitude.The results showed that the correlation between the effective accumulated temperature≥10℃and the latitude,longitude and altitude in Heilongjiang Province had reached a very significant level,and the effective accumulated temperature geographic calculation model had a good simulation effect.During the study period,the initial date of the critical temperature≥10℃was in advance,the trend of advance was mountainous>plain,and the final date was delayed,the trend of delay was plain>mountainous.The advance of the initial day and the delay of the final day were conducive to the accumulation of effective accumulated temperature;during the study period,the effective accumulated temperature≥10℃showed an increasing trend,and its distribution showed obvious regional characteristics.In general,it gradually decreased from south to north,and gradually increased from mountains to plain.

关 键 词：黑龙江 DEM 10℃界限温度 时空变化 

分 类 号：S162.3[农业科学—农业气象学]