[1]李军.山区气温空间分布模拟的DEM尺度影响[J].山地学报,2012,(06):688.
　LI Jun.Spatialscaling Effect of DEM on the Simulation of Spatial Distribution of Temperature in Mountain Area[J].Mountain Research,2012,(06):688.
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山区气温空间分布模拟的DEM尺度影响()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年06期
页码:
688
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
Spatialscaling Effect of DEM on the Simulation of Spatial Distribution of Temperature in Mountain Area
作者:
李军;
重庆师范大学 地理科学学院，GIS应用研究重庆市高校重点实验室，重庆400047
Author(s):
LI Jun
College of Geography Science, Key Laboratory of GIS Application, Chongqing Normal University, Chongqing 400047, China
关键词:
DEM; 空间尺度; 山区; 气温
Keywords:
DEM;  spatialscaling;  mountainous area;  temperature
分类号:
P463
文献标志码:
A
摘要:
以浙江省仙居县为实验区,通过气温空间分布的地形调节统计模型,并使用了10个气象站(哨)的气温资料和不同空间分辨率的DEM(均来源于1∶1万的数字化地形图),模拟了不同空间尺度的年平均气温空间分布,比较了它们的误差大小以及随宏观地形(海拔)和微观地形(坡度和坡向)的分布差异。结果表明:基于不同空间分辨率DEM模拟的平均气温呈现较大的空间分布差异性;随着DEM空间分辨率的减小,误差逐渐增加(最大绝对误差为2.04℃,相对误差为15.10%),且空间差异性降低。而且微观地形因子(坡度和坡向)随着空间分辨率的变化产生显著变化,进而明显影响气温的空间分布,不同坡度之间的年平均气温差最大为9.5℃,最小为...
Abstract:
In mountainous areas, the terrain factors are the main factors that affect the spatial distribution of air temperature. DEM and digital terrain analysis of GIS technology provide the very good technical method for the research on spatial distribution of temperature in mountainous areas. The terrain factors derived from DEM with different spatial resolutions have obvious difference because of the effect of DEM scale, and then it will have great effect on spatial distribution simulation of temperature. In this paper, we take Xianju County in Zhejiang province as test area. After that we apply topographyadjusted statistical model to simulate annual temperature with different resolutions based on temperature data from 10 meteorological stations and different resolution DEM data from 1∶10 000 digital topographic map. We hypothesize the temperature map with 12.5 m resolution is accurate and the errors between the other temperature map with different resolutions and 12.5 m temperature map are analyzed. Moreover, the temperatures with different grid cell sizes differ significantly with topography in macro and micro scale. The results show that the spatial distribution of the simulated temperature based on different resolution DEM has great different characteristics. The simulated temperature error increases gradually with the decrease of DEM resolution and the spatial heterogeneity decreases. The maximum absolute error is 2.04℃ and the maximum relative error is 1510%. The terrain factors such as slope gradient and aspect in micro topography scale have significant change with DEM resolution and then have great effect on the spatial distribution of temperature. The maximum temperature difference in different slope gradient is 9.5℃, while the minimum difference is only 1.8℃. The maximum temperature difference in different aspect may reach 12.4℃, while the minimum difference is 2.4℃.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2012-03-27；改回日期(Accepted) : 2012-05-05。
基金项目（Foundation item）：公益性行业（气象）科研专项项目(GYHY201106025)；国家自然科学
基金项目(40701148)；重庆师范大学
基金项目(11XLB050)资助。 \[Supported by Special Scientific Research Project for Public Welfare Industry (meteorology)(No. GYHY201106025), National Natural Science Foundation of China(No.40701148), and Foundation of Chongqing Normal University(No.11XLB050).\]
作者简介（Biography）：李军（1974-），男，天津杨柳青人，博士，副研究员，主要从事农业遥感和地理信息系统应用研究。\[LiI Jun(1974-), Ma1e, born in Tianjin, China, Doctor, Associate Research Fellow, research fields mainly covering Agricultural Remote Sensing and application of Geography Information System.\] E-mail：junli@cqnu.edu.cn\]
更新日期/Last Update: 1900-01-01