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首页> 外文期刊>European Journal of Remote Sensing >Within-Species Benefits of Back-projecting Airborne Laser Scanner and Multispectral Sensors in Monospecific Pinus sylvestris Forests
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Within-Species Benefits of Back-projecting Airborne Laser Scanner and Multispectral Sensors in Monospecific Pinus sylvestris Forests

机译：单种樟子松林中背投式机载激光扫描仪和多光谱传感器的种内优势

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摘要

Back-projecting is an alternative to orthorectification for ALS-imagery fusion. It usually assists in improving forest estimations in mixed forests, by adding species information from optical sensors. In this study, we focused on the within-species advantages obtained. Results showed that estimating relative stem density improved significantly (from R 2 =0.76 to R 2 =0.81), as the multispectral signal may incorporate canopy closure-related shadowing conditions at plot-level. As a result, volume prediction also improved (from R 2 =0.65 to R 2 =0.69), even though Lorey's height and basal area did not. Hence, monospecific conifer forests assessment may also benefit from ALS-imagery fusion.
机译：反投影是用于ALS图像融合的正射矫正的替代方法。它通常通过添加来自光学传感器的物种信息来帮助改善混交林中的森林估计。在这项研究中，我们集中于获得的种内优势。结果表明，估计相对茎密度显着提高（从R 2 = 0.76到R 2 = 0.81），因为多光谱信号可能在地块水平上包含了与冠层闭合相关的阴影条件。结果，即使Lorey的身高和基础面积没有变化，体积预测也有所改善（从R 2 = 0.65到R 2 = 0.69）。因此，单种针叶林的评估也可能受益于ALS-图像融合。

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