کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4459396 1621291 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Retrieval of canopy height using moderate-resolution imaging spectroradiometer (MODIS) data
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات کامپیوتر در علوم زمین
پیش نمایش صفحه اول مقاله
Retrieval of canopy height using moderate-resolution imaging spectroradiometer (MODIS) data
چکیده انگلیسی

In this study we use the 500 m Moderate Resolution Imaging Spectroradiometer (MODIS) Bidirectional Reflectance Distribution Function (BRDF) product to develop multivariate linear regression models that estimate canopy heights over study sites at Howland Forest, Maine, Harvard Forest, Massachusetts and La Selva Forest, Costa Rica using (1) directional escape probabilities that are spectrally independent and (2) the directional spectral reflectances used to derive the directional escape probabilities. These measures of canopy architecture are compared with canopy height information retrieved from the airborne Laser Vegetation Imaging Sensor (LVIS). Both the escape probability and the directional reflectance approaches achieve good results, with correlation coefficients in the range 0.54–0.82, although escape probability results are usually slightly better. This suggests that MODIS 500 m BRDF data can be used to extrapolate canopy heights observed by widely-spaced satellite LIDAR swaths to larger areas, thus providing wide-area coverage of canopy height.

Research Highlights
► We used the 500 m MODIS BRDF/Albedo product and Lidar data to estimate canopy heights.
► We compared the estimation using spectral invariants parameters and directional reflectance.
► This study indicates a potential to use multi-angle, multi-spectral reflectances to extrapolate narrow swath LIDAR canopy structure information to larger regions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Remote Sensing of Environment - Volume 115, Issue 6, 15 June 2011, Pages 1595–1601
نویسندگان
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