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首页> 外文期刊>Journal of Applied Remote Sensing >How does the global Moderate Resolution Imaging Spectroradiometer (MODIS) Fraction of Photosynthetically Active Radiation (FPAR) product relate to regionally developed land cover and vegetation products in a semi-arid Australian savanna?
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How does the global Moderate Resolution Imaging Spectroradiometer (MODIS) Fraction of Photosynthetically Active Radiation (FPAR) product relate to regionally developed land cover and vegetation products in a semi-arid Australian savanna?

机译：全球半合成图像分辨率光谱仪（MODIS）的光合有效辐射（FPAR）产品与半干旱澳大利亚稀树草原地区开发的土地覆盖和植被产品有何关系？

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Spatio-temporally variable information on total vegetation cover is highly relevant to water quality and land management in river catchments adjacent to the Great Barrier Reef, Australia. A time series of the global Moderate Resolution Imaging Spectroradiometer (MODIS) Fraction of Photosynthetically Active Radiation (FPAR; 2000-2006) and its underlying biome classification (MOD12Q1) were compared to national land cover and regional, remotely sensed products in the dry-tropical Burdekin River. The MOD12Q1 showed reasonable agreement with a classification of major vegetation groups for 94percent of the study area. We then compared dry-seasonal, quality controlled MODIS FPAR observations to (i) Landsat-based woody foliage projective cover (wFPC) (2004) and (ii) MODIS bare ground index (BGI) observations (2001-2003). Statistical analysis of the MODIS FPAR revealed a significant sensitivity to Landsat wFPC-based Vegetation Structural Categories (VSC) and VSC-specific temporal variability over the 2004 dry season. The MODIS FPAR relation to 20 coinciding MODIS BGI dry-seasonal observations was significant (rho < 0.001) for homogeneous areas of low wFPC. Our results show that the global MODIS FPAR can be used to identify VSC, represent VSC-specific variability of PAR absorption, and indicate that the amount, structure, and optical properties of green and non-green vegetation components contribute to the MODIS FPAR signal.
机译：关于总植被覆盖的时空变化信息与澳大利亚大堡礁相邻的河流集水区的水质和土地管理高度相关。将全球中度分辨率成像分光光度计（MODIS）的光合有效辐射分数（FPAR; 2000-2006）及其基础生物群落分类（MOD12Q1）的时间序列与全国土地覆盖以及干热带地区的区域遥感产品进行了比较伯德金河。 MOD12Q1与94％的研究区域的主要植被类别的分类显示出合理的一致性。然后，我们将干燥季节，质量受控的MODIS FPAR观测值与（i）基于Landsat的木质叶面射影覆盖（wFPC）（2004）和（ii）MODIS裸地指数（BGI）观测值（2001-2003）进行了比较。 MODIS FPAR的统计分析表明，在2004旱季，对基于Landsat wFPC的植被结构类别（VSC）和特定于VSC的时间变化具有显着的敏感性。对于低wFPC的均匀区域，MODIS FPAR与20个一致的MODIS BGI干季观测值之间的关系很显着（rho <0.001）。我们的结果表明，全局MODIS FPAR可用于识别VSC，代表VSC特定的PAR吸收变异性，并表明绿色和非绿色植被成分的数量，结构和光学性质对MODIS FPAR信号有贡献。

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