| 利用MODIS卫星资料分析北京地区地表反照率时空分布及变化特征 |
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| 引用本文： | YANG Juan,杨娟,陈洪滨,王开存,王振会. 利用MODIS卫星资料分析北京地区地表反照率时空分布及变化特征[J]. 遥感技术与应用, 2006, 21(5): 403-406. DOI: 10.11873/j.issn.1004-0323.2006.5.403 |
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| 作者姓名： | YANG Juan 杨娟 陈洪滨 王开存 王振会 |
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| 作者单位： | (1. 南京信息工程大学大气物理与大气环境, 江苏南京 210044;2. 中国科学院大气物理研究所中层大气与探测实验室, 北京 100029) |
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| 基金项目： | 受973项目“空间微波遥感地海表和大气数据验证”(2001CB309402)，国家自然科学基金“中国气溶胶特性及辐射强迫的地面观测和卫星遥感研究”(40520120071)，遥感科学国家重点实验室开放基金“MODIS地表反照率和地表温度产品精度检验及地表净辐射的计算”(SK050012)联合支持 |
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| 摘 要： | 利用2000～ 2005 年MOD IS 地表双向反照率(MOD43B3) , 植被指数(MOD13A 2) 和地表覆盖类型(MOD12Q 1) 资料, 分析了北京及周边地区地表反照率的时空分布, 计算了2000～ 2005 年平均地表反照率的时间变化。结果表明, 北京城区年平均地表反照率为0. 12, 山区森林(0. 11) 明显小于平原地区(0. 15) , 而永定河流域反照率较大(0. 18) , 这主要是因为永定河流域植被覆盖度较低(植被指数低) , 山区地表反照率季节性变化不明显。2000～ 2005 年6 年的统计回归显示北京平原地区反照率呈略有下降。
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| 关 键 词： | MODIS 北京地区 地表反照率 NDVI 地表覆盖 |
| 文章编号： | 1004-0323（2006）05-0403-04 |
| 收稿时间： | 2006-03-16 |
| 修稿时间： | 2006-03-162006-05-31 |
Analysis of the Surface Albedo Distribution and Variation in Beijing Region by Using the MODIS Data |
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| YANG Juan,CHEN Hong-bin,WANG Kai-cun,WANG Zhen-hui. Analysis of the Surface Albedo Distribution and Variation in Beijing Region by Using the MODIS Data[J]. Remote Sensing Technology and Application, 2006, 21(5): 403-406. DOI: 10.11873/j.issn.1004-0323.2006.5.403 |
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| Authors: | YANG Juan CHEN Hong-bin WANG Kai-cun WANG Zhen-hui |
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| Affiliation: | (1. Department of Atmospheric Physics and Environment, Nanjing University of Information Science and Technology , Nanjing 210044, China; 2. Lab. for Middle Atmosphere and Global Environment Observation (LAGEO ) , Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing 100029, China) |
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| Abstract: | Using MODIS surface albedo(MOD43B3),vegetation indices(MOD13A2),land cover(MOD12Q1) and land cover products during the year 2000~2005,the spatial and temporal distribution of surface albedo over Beijing region are investigated.Temporal variation surface albedo during 2000~2005 is calculated,and the relationship between the NDVI and surface albedo is checked.The results show that the surface albedo is lower in northwest mountainous area(0.11) than in southeast plain (0.15).The albedo over Beijing urban area(0.12) is nearly equal in summer and autumn.The albedo over the Yongding River basin demonstrates high value(0.18) for its lower vegetation cover.According to the topography and vegetation cover around Beijing area,we also find that the NDVI is negatively related to the surface albedo,and the data show that the surface albedo is descending in most part of Beijing during the six years,but ascending in mountainous areas and the urban area. |
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| Keywords: | MODIS Beijing region Surface albedo NDVI Vegetation cover |
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