基于MOD IS的祁连山地区陆面温度空间分布研究

J4 ›› 2008, Vol. 26 ›› Issue (2): 41-47.

基于MOD IS的祁连山地区陆面温度空间分布研究

李粉玲^{1, 3} ,李京忠²,刘　勇³

1. 西北农林科技大学资源环境学院,陕西　咸阳　712000; 2. 西北大学城市与资源学系,陕西　西安　710000; 3. 兰州大学资源环境学院,甘肃　兰州　730000

收稿日期:2007-12-12 修回日期:2008-05-23 出版日期:2008-06-30 发布日期:2008-06-30
作者简介:李粉玲(1981 - ) ,女,陕西西安人,助教,硕士,主要从事GIS和环境遥感研究. E-mail: fenlingli@nwsuaf. edu. cn

Spa tia l D istr ibution of Land Surface Tempera ture in Qilian M oun ta in Area Ba sed on MOD IS

L I Fenling^{1, 3}, L I J ingzhong ² , L IU Yong³

1. College of Resources and Environm ent, N orthwest A&F University, Yangling 712100, China;2. Departm ent of U rban and Resource Science, N orthwest Universit, X i’an 710069, China;3. College of Resources and Environm ent, Lanzhou University, Lanzhou 730000, China

Received:2007-12-12 Revised:2008-05-23 Online:2008-06-30 Published:2008-06-30

摘要/Abstract

摘要：

利用Becker - L i的算法,获取了祁连山地区不同时相的陆面温度空间分布规律。研究发现:瞬时陆面温度的空间分布与同步气温数据的宏观变化规律基本一致。多样的地形地貌和不同的下垫面地表覆盖类型,决定了其陆面温度的空间分布格局。进而讨论了陆面温度随海拔高度的垂直分异规律。祁连山地区区域陆面温度垂直递减率的变化范围为5. 42～6. 56 ℃/km,正北、正东、正南和正西方位上陆面温度的垂直递减率分别为6. 56、5. 73、5. 42和5. 84 ℃/km。其中朝向太阳方向的南、东坡梯度值最小,而背向太阳方向的西、北坡值最大。高海拔地区地表温度的垂直递减率要高于低海拔地区。

关键词: 祁连山区, 陆面温度, 空间分布, 陆面温度垂直递减率

Abstract:

The spatial distribution of land surface temperature (LST) in different seasons in the Qilian Mountain area were derived based on Becker - L i (1990) ’s algorithm. The results show that the distribution of instantaneous LSTwas in general accord with macroscop ical variation of coinstantaneous air temperature data, and the diverse topography and different cover types of underlying surfacedecided spatial distribution patterns of LST. The vertical distribution of LST was also discussed. The results show when the Terra -MOD IS collects data, the LST lap se rate varies from 4. 52 - 6. 56 ℃/km, and the minimum value happens in the direction of sunshine, which app roximates to 4. 52 ℃/km on the right south side of the mountains; the maximal value happens at the opposite side of sunshine, which is 6. 56 ℃/km at the north side of the mountains. The LST lap se rate in high altitude regions is higher than that in low altitude regions.

Key words: QilianMountain area, land surface temperature, spatial distribution, LST lap se rate

中图分类号:

K909

李粉玲, 李京忠, 刘　勇. 基于MOD IS的祁连山地区陆面温度空间分布研究[J]. J4, 2008, 26(2): 41-47.

LI Fen-Ling, LI Jing-Zhong, LIU 　Yong. Spa tia l D istr ibution of Land Surface Tempera ture in Qilian M oun ta in Area Ba sed on MOD IS[J]. J4, 2008, 26(2): 41-47.

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