IGSNRR OpenIR
MODELING BIDIRECTIONAL REFLECTANCE OF MULTICOMPONENT VEGETATION CANOPIES
QIN, WH
1993-12-01
Source PublicationREMOTE SENSING OF ENVIRONMENT
ISSN0034-4257
Volume46Issue:3Pages:235-245
Corresponding AuthorQIN, WH()
AbstractBy combining geometrical optics and transport theory, a bidirectional reflectance model for multicomponent vegetation canopies is explicitly developed in this article. A precise expression of the overlap function, is derived for vertically cylindric phytoelements randomly distributed in the canopy, and a mathematical model for describing the vertical distribution of leaf area density is presented and fitted with measured data. In addition, the size, shape, orientation, and nonrandom distribution of leaves and vertical inhomogeneity of the canopy are properly taken into account in this model. The model also reproduces the measured distributions of reflectance from a wheat canopy quite well. The significant effect of stems on the canopy reflectance is identified by comparison with the result of the corresponding leaf canopy model. The results of sensitivity analysis prove that, even for crop canopies like wheat in this study, the influence of stems cannot be neglected if the ratio of stem silhouette area to the total foliage area is greater than 10%. Since this multicomponent model is a hybrid one, it could serve as a primary model to develop more accurate reflectance model for inhomogeneous vegetation canopies, such as forest, in further studies.
WOS KeywordLEAF CANOPIES ; SCATTERING ; TRANSPORT
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:A1993MR04400001
PublisherELSEVIER SCIENCE INC
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/56592
Collection中国科学院地理科学与资源研究所
Corresponding AuthorQIN, WH
AffiliationCHINESE ACAD SCI,INST GEOG,BEIJING 100101,PEOPLES R CHINA
Recommended Citation
GB/T 7714
QIN, WH. MODELING BIDIRECTIONAL REFLECTANCE OF MULTICOMPONENT VEGETATION CANOPIES[J]. REMOTE SENSING OF ENVIRONMENT,1993,46(3):235-245.
APA QIN, WH.(1993).MODELING BIDIRECTIONAL REFLECTANCE OF MULTICOMPONENT VEGETATION CANOPIES.REMOTE SENSING OF ENVIRONMENT,46(3),235-245.
MLA QIN, WH."MODELING BIDIRECTIONAL REFLECTANCE OF MULTICOMPONENT VEGETATION CANOPIES".REMOTE SENSING OF ENVIRONMENT 46.3(1993):235-245.
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