气候变化领域集成服务门户(CCPortal): Canopy modeling of aquatic vegetation: A geometric optical approach (AVGO)

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DOI	10.1016/j.rse.2020.111829
	Canopy modeling of aquatic vegetation: A geometric optical approach (AVGO)
	Zhou G.; Yang S.; Sathyendranath S.; Platt T.
发表日期	2020
ISSN	00344257
卷号	245
英文摘要	Aquatic vegetation is an important component in the ecosystems of wetlands and coastal waters, for example it can take up harmful substances and pollutants from the water. Constructing a remote sensing model of aquatic vegetation can deepen our understanding of the spectral characteristics and directional reflection characteristics of the aquatic vegetation canopy under various environmental conditions. However, the existing aquatic vegetation models are limited to continuously distributed canopies. This paper proposes an aquatic-vegetation- geometric-optical (AVGO) model at canopy scale for discrete aquatic vegetation. After dividing the reflectance of water background into specular components and diffuse components, the reflectances of all reflecting surfaces are classified into different reflectance components based on the differences in their materials and on whether the reflectors are illuminated by direct sunlight. Then the scene bidirectional reflectance factor (BRF) is regarded as an area-weighted sum of different reflectance components. Detailed verifications were conducted to ensure that the simulation model operates as intended. The performance of the AVGO model was qualitatively validated with the WCRM model and showed the physical plausibility of the model prediction. Quantitative validations against an artificially designed experiment were consistent with the bidirectional reflectance and the nadir-viewed spectral reflectance. This model can be used for canopy modeling of discrete emergent or submerged aquatic vegetation. Potential applications include retrieval of biophysical or biochemical parameters and aquatic vegetation abundance based on hyperspectral data. © 2020
英文关键词	Bidirectional reflectance factor; Discrete aquatic vegetation; Geometric optical model; Wetland remote sensing
语种	英语
scopus关键词	Reflection; Remote sensing; Vegetation; Water pollution; Bi-directional reflectance factors; Bidirectional reflectance; Biochemical parameters; Environmental conditions; Quantitative validation; Reflectance components; Spectral characteristics; Submerged aquatic vegetations; Aquatic ecosystems; aquatic plant; biochemistry; coastal water; environmental conditions; geometry; model validation; nadir; optical method; qualitative analysis; spectral reflectance; wetland
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179306
作者单位	School of Instrumentation Science and Optoelectronic Engineering, Beihang University, Beijing, 100191, China; Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, United Kingdom; National Centre for Earth Observation, Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, United Kingdom
推荐引用方式 GB/T 7714	Zhou G.,Yang S.,Sathyendranath S.,et al. Canopy modeling of aquatic vegetation: A geometric optical approach (AVGO)[J],2020,245.
APA	Zhou G.,Yang S.,Sathyendranath S.,&Platt T..(2020).Canopy modeling of aquatic vegetation: A geometric optical approach (AVGO).Remote Sensing of Environment,245.
MLA	Zhou G.,et al."Canopy modeling of aquatic vegetation: A geometric optical approach (AVGO)".Remote Sensing of Environment 245(2020).