引用本文:尚升海, 角媛梅, 刘澄静, 章侃丰, 李绒.哀牢山区降水时空变化及其阻隔效应研究[J].西南大学学报(自然科学版),2019,41(8):92~98
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哀牢山区降水时空变化及其阻隔效应研究
尚升海, 角媛梅, 刘澄静, 章侃丰, 李绒
云南师范大学 旅游与地理科学学院, 昆明 650500
摘要:
为了揭示滇中地区降水的时空分异特征,以哀牢山区7年(2008-2014年)来110个模拟气象站点逐日降水数据为基础,运用普通克里金插值、T检验等方法对哀牢山区降水的时空格局进行多尺度分析,并探讨了哀牢山降水阻隔效应.结果表明:①从降水站点尺度看,哀牢山西侧站点的降水量均高于东侧对应站点,哀牢山北端和中部两侧降水差异最小,南段两侧降水差异最大;②从等降水量线尺度看,800 mm与1 200 mm等降水量线在不同降水类型年份走势存在差异,降水偏多年份等降水量线分布杂乱,降水偏少年份等降水量线与哀牢山走势相近;③从降水量插值面尺度看,哀牢山区降水的空间分异特征可划分为东部高原区、中西部三角岭谷区、以及南部水平丘陵区.总体上看,哀牢山北段较南段降水阻隔效应更明显,体现了较高的时空异质性.
关键词:  时空变化  降水插值  阻隔效应  尺度
DOI:10.13718/j.cnki.xdzk.2019.08.014
分类号:P462
基金项目:国家自然科学基金项目(41271203,41761115).
A Study of the Spatio-Temporal Variation of Precipitation in the Ailao Mountain Area and Its Barrier Effect
SHANG Sheng-hai, JIAO Yuan-mei, LIU Cheng-jing, ZHANG Kan-feng, LI Rong
School of Tourism and Geography, Yunnan Normal University, Kunming 650500, China
Abstract:
In order to reveal the spatial and temporal differentiation characteristics of precipitation in central Yunnan, based on the daily precipitation data of 110 simulated meteorological sites in the Ailao Mountain Area in the 7 years from 2008 to 2014, ordinary Kriging interpolation and T-test are used to make a multi-scale analysis of the spatial and temporal pattern of precipitation in this mountainous area, and the precipitation barrier effect of the Ailao Mountains is discussed. The results show that from the scale of precipitation sites, the precipitation of the side west of the Ailao Mountains is higher than that of the east side, and the difference in precipitation between the two sides is the smallest in the northern and central sections of the Ailao Mountains and the largest in the southern section. From the scale of the equipluve (equivalent precipitation line), the 800 mm and 1 200 mm equipluves have different trends in different precipitation types. In years with more precipitation, the equipluves are distributed in greater disorder, while in years with less precipitation, they run in a similar trend to that of the Ailao Mountains. From the scale of precipitation interpolation, the spatial differentiation characteristics of precipitation in the Ailao Mountains can be divided into the eastern plateau area, the central and western triangle gorge area, and the southern horizontal hilly area. Generally speaking, the precipitation barrier effect of the northern part of the Ailao Mountains is more obvious than that of the southern part, which reflects a higher spatial and temporal heterogeneity.
Key words:  spatio-temporal change  precipitation interpolation  barrier effect  scale
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