1961～2010年云南省≥10℃活动积温时空变化格局  

Spatial-temporal Patterns of ≥10 ℃ Active Accumulated Temperature during Recent 50 Years in Yunnan Province

作　　者：王连超[1] 郝成元[1] WANG Lian-chao HAO Cheng-yuan(College of Surveying ＆ Land Information Engineering, He＇ nan Polytechnic University, Jiaozuo 454000, Chin)

机构地区：[1]河南理工大学测绘与国土信息工程学院,河南焦作454000

出　　处：《河北农业科学》2016年第4期100-104,共5页Journal of Hebei Agricultural Sciences

基　　金：国家自然科学基金项目(41371105)

摘　　要：活动积温与植被演替、农作物生长关系密切,对区域生态状况和粮食安全具有决定性作用。基于GIS平台,研究了云南省31个气象站50 a的≥10℃活动积温时空分布格局及其变化特征。结果表明：（1）1961-2010年云南省≥10℃活动积温呈增长趋势,增幅为9.080℃/a,其中,1961-1978年≥10℃活动积温为负距平,1998-2010年为正距平,1979-1997年≥10℃活动积温距平以振荡为主;（2）5个代际≥10℃活动积温代际内最高值和均值随时间推移逐渐增大;（3）基本以景洪-思茅-元江-元谋为线,≥10℃活动积温向西、东2个方向逐渐减少;同时,空间差异程度随着时间推移有减小趋势。The active accumulated temperature plays a decisive role on ecological conditions and food security,closely related with vegetation succession and crop growth. Supported by Arc GIS software,spatialtemporal patterns and its characteristic of ≥10 ℃ active accumulated temperature were studied in Yunnan Province based on long time series from 1961 to 2010. On the overall pattern,it showed growing trend by9.080 ℃/a. And there are three periods in both 1979 and 1997 for the sector,positive anomaly in 1961-1978 and negative anomaly in 1998-2010, and oscillating in 1979-1997. On the temporal characteristic hand, both maximum and mean of active accumulated temperature increased gradually with time passing during five periods,especially the comparison of two periods between 1961-1970 and 2001-2010. On the spatial characteristic hand, active accumulated temperature decreased successively both westwardly and eastwardly from a boundary line,named Jinghong City- Simao City- Yuanjiang Ctiy- Yuanmou City. At the same time,the degree of spatial variation decreased with time passing in this whole research time.

关 键 词：GIS空间分析 ≥10℃活动积温 时空格局 云南省 

分 类 号：P468.0[天文地球—大气科学及气象学]