| 摘要: |
| 该文以北京市昌平区为研究区域，利用3期不同时间Landsat TM遥感影像，沿着13条不同海拔高 度等高线构建特征剖面，提取了研究区不同海拔高度上地表亮度温度、植被指数和植被覆盖度数据，分析 了其时空变化特征。结果发现，植被覆盖度和亮度温度的关系随着海拔高度及时间变化而呈现一定变化规 律。在区域尺度内，随着海拔高度上升，植被覆盖度和亮度温度呈负相关关系。去除海拔因素的影响，在 同一海拔高度时，大部分情况下，植被覆盖度与亮度温度两者呈负相关关系，某些条件下，两者可呈正相 关关系。 |
| 关键词: 植被覆盖度 亮度温度 特征剖面 北京昌平 |
| DOI：10.7621/cjarrp.1005-9121.20110502 |
| 分类号: |
| 基金项目:科技部国际科技合作项目（2010DFB10030）,农业部“948计划”项目（2009-Z31，2010-S2）支持，国家自然科学基金（批号：40701183）资助 |
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| A STUDY ON THE RELATIONSHIP BETWEEN VEGETATION COVERAGE AND LAND SURFACE BRIGHTNESS TEMPERATURE BY REMOTE SENSING |
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Ding Yaping1, Zhang Xuexia2, Chen Zhongxin1
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1.Laboratory of Resources Remote Sensing and Digital Agriculture， MOA， Beijing 100081/Institute of Agricultural Resources & Regional Planning， CAAS， Beijing 100081;2.Institute of Soil & Water Conservation， Beijing Forestry University， Beijing 100083
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| Abstract: |
| Taking Changping District of Beijing as the case study region， the authors investigated the relationship between vegetation coverage and land surface brightness temperature， based on 3 Landsat TM images. Firstly， the experimental dataset of land surface brightness temperature， NDVI and vegetation coverage was extracted along 13 contour lines of different altitude. Then the authors analyzed the spatial and temporal changes of the relationship be- tween land surface temperature and vegetation coverage in the study region.. The results showed that correlation be- tween land surface brightness temperature and vegetation coverage varied at different time and altitude. In the study region， with the increasing of the altitude， vegetation coverage and brightness temperature showed a negative corre- lation. After removal of the impact of altitude， the two parameters were negatively correlated in most areas， but positively correlated in certain other conditions. |
| Key words: brightness temperature vegetation coverage feature profile Beijing Changping |
