PROSPECT-D: Towards modeling leaf optical properties through a complete lifecycle
PROSPECT-D: Towards modeling leaf optical properties through a complete lifecycle
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DOI：
10.1016/j.rse.2017.03.004
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发表时间：
2017-05-01
影响因子：
13.5
通讯作者：
Jacquemoud, S.
中科院分区：
文献类型：
--
作者：
Feret, J. -B.;Gitelson, A. A.;Jacquemoud, S.
叶色素提供了有关植物生理学的有价值的信息。对它们的动态进行高分辨率监测将有助于更好地了解不同尺度上发生的过程，对生态学家、农民和决策者评估气候变化对植物功能的影响以及森林、作物和其他植物冠层的适应性尤为重要。在这篇文章中，我们提出了一个新版本的广泛使用的前景模型，以下称为PROSPECT-D的动态，它增加了花青素的叶绿素和类胡萝卜素，在当前版本的两种植物色素。我们描述了PROSPECT-D与以前版本相比的演变和改进，并在各种实验数据集上进行了验证。我们的结果表明，PROSPECT-D优于所有以前的版本。模型预测的不确定性降低，光合色素更好地恢复。叶类胡萝卜素尤其如此，其估计特别具有挑战性。PROSPECT-D还能够模拟真实的叶片光学特性，在可见光域中误差最小，在近红外和短波红外域中的性能与其他版本相似。(C)2017爱思唯尔公司All rights reserved.
Leaf pigments provide valuable information about plant physiology. High resolution monitoring of their dynamics will give access to better understanding of processes occurring at different scales, and will be particularly important for ecologists, farmers, and decision makers to assess the influence of climate change on plant functions, and the adaptation of forest, crop, and other plant canopies. In this article, we present a new version of the widely-used PROSPECT model, hereafter named PROSPECT-D for dynamic, which adds anthocyanins to chlorophylls and carotenoids, the two plant pigments in the current version. We describe the evolution and improvements of PROSPECT-D compared to the previous versions, and perform a validation on various experimental datasets. Our results show that PROSPECT-D outperforms all the previous versions. Model prediction uncertainty is decreased and photosynthetic pigments are better retrieved. This is particularly the case for leaf carotenoids, the estimation of which is particularly challenging. PROSPECT-D is also able to simulate realistic leaf optical properties with minimal error in the visible domain, and similar performances to other versions in the near infrared and shortwave infrared domains. (C) 2017 Elsevier Inc. All rights reserved.