| 不同分辨率影像反演植被覆盖度的参数确定与尺度效应分析 |
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| 引用本文： | 江淼,张显峰,孙权,童庆禧.不同分辨率影像反演植被覆盖度的参数确定与尺度效应分析[J].武汉大学学报(信息科学版),2011(3):311-315. |
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| 作者姓名： | 江淼 张显峰 孙权 童庆禧 |
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| 作者单位： | 北京大学遥感与地理信息系统研究所;中国冶金地质总局矿产资源研究院; |
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| 基金项目： | 国家科技支撑计划资助项目(2007BAH12B05); 国家863计划资助项目(2008AA12ZZ112) |
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| 摘 要： | 选择新疆古尔通班古特沙漠南缘的石河子地区作为研究区,针对统计回归模型需要大量实测数据,而像元二分模型(dimidiate pixel model,DPM)参数难以确定的缺点,提出了利用统计回归的结果反推像元二分模型参数来建立研究区遥感反演植被覆盖度的方法。运用该方法研究了利用TM和MODIS遥感影像数据分别反演植被覆盖度的参数化方案;同时,还研究了采用不同遥感数据源和不同反演模型时研究区植被覆盖度信息提取中存在的尺度效应。
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| 关 键 词： | 植被覆盖度 像元二分模型 经验模型 尺度效应 |
Vegetation Coverage Retrieval Scale Effect Analysis Using Multi-Sensor Data |
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| JIANG Miao, ZHANG Xianfeng SUN Quan TONG Qingxi.Vegetation Coverage Retrieval Scale Effect Analysis Using Multi-Sensor Data[J].Geomatics and Information Science of Wuhan University,2011(3):311-315. |
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| Authors: | JIANG Miao ZHANG Xianfeng SUN Quan TONG Qingxi |
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| Institution: | JIANG Miao1,2 ZHANG Xianfeng1 SUN Quan1 TONG Qingxi1 (1 Institute of Remote Sensing and GIS,Peking University,5 Yiheyuan Road,Beijing 100871,China) (2 Institute of Mineral Resources Research,China Metallurgical Geology Bureau,105 Yaojiayuan Road,Beijing 100025,China) |
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| Abstract: | Remote sensing provides a valuable tool and enables to derive vegetation coverage over a large area using either empirical statistical models or sub-pixel analysis.However,to build an empirical regressive model needs a considerate ground truth data,while the parameters for the dimidiate pixel model(DPM) are often difficult to determine in a specific area.We combine the advantages of these two types of inversion models,using the regressive model to determine and validate the DPM parameters.The validated DPM ... |
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| Keywords: | fractional vegetation coverage scale effect multi-sensor data dimidiate pixel model |
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