新疆老君庙煤矿火区地表温度反演及时空变化分析
投稿时间:2017-03-27  修订日期:2017-06-14  点此下载全文
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作者单位E-mail
唐梦迎 新疆大学 2278869665@qq.com 
丁建丽 新疆大学 412239648@qq.com 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:通过Landsat TM5和Landsat 8/OLI分别选取新疆老君庙煤矿区2006、2010和2015年7月份过境的遥感影像,运用单窗算法反演研究区地表温度(LST)并进行煤火区时空变化监测,得出:LST最大值在2015年,为46.19℃;最小值在2006年,为26.47℃,各年均温度呈现递增趋势。2006和2010年LST变异系数小于0.1,属低变异;2015年为0.12,属中变异,随时间变化受人类影响逐渐加剧。各年LST变化幅度分别为5.38℃、8.37℃和14.88℃,说明受到某些地表因素变化的影响,LST分布差异性逐年增大。监测各年煤火区时空变化得出:2006年地下火区面积为0.53 ha(公顷),2010年为1.44 ha,2015年为6.57 ha。2006~2015年地下火区面积年均增长率为25.72%,且增速逐年加快,长此下去,煤炭资源损失将会更加严重。
中文关键词:煤田火区  LST  遥感监测  时空分析
 
Space-time variation analysis and monitoring of the land surface temperature of coal fire area in Laojunmiao, Xinjiang
Abstract:This article is witnessed to retrieve the land surface temperature (LST) in Laojunmiao coal fire area in Xinjiang by using the Monowindow method with images of Landsat 5 and 8/OLI taken in July, 2006, 2010 and 2015, respectively. The results showed that the highest value of LST was 46.19℃ in 2015, while the lowest of that was 26.47℃ in 2006. The mean LST had increasing trend. Variation coefficients of 2006 and 2010 were lower than 0.1 belonged slight variation, while that of 2015 was 0.12 belonged moderate variation showing that LST was subjected to?human?disturbance over?time. The variation ranges of each year was 5.38℃,8.37℃ and 14.88℃, respectively, indicating that LST distribution was changed over time that affected by the changes of some factors. The result of monitoring coal fire was that the increasing rate of underground fire area between 2006 and 2015 was 25.72%, which was?intensifying?year after year. If things continue this way, coal lost issues will be more serious.
keywords:coal fire  LST  remote sensing monitoring  space-time analysis
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