VISIBLE-NEAR-INFRARED SPECTRAL REFLECTANCE OF LANDSCAPE COMPONENTS IN WESTERN OREGON

被引：60

作者：

GOWARD, SN ^{[1
]}

HUEMMRICH, KF ^{[1
]}

WARING, RH ^{[1
]}

机构：

[1] OREGON STATE UNIV,COLL FORESTRY,CORVALLIS,OR 97331

来源：

REMOTE SENSING OF ENVIRONMENT | 1994年 / 47卷 / 02期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1016/0034-4257(94)90155-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To help interpret satellite-derived measures of spectral vegetation indices across western Oregon, we collected samples of important landscape constituents and determined their spectral reflectance properties using a Spectron Engineering field spectrometer. To make measurements reproducible, we created stacks of branches and other materials in well-illuminated areas and continually referenced measurements against a standard reference panel. The measurements indicated that variations in remotely sensed spectral vegetation indices observed in western Oregon originate from variations in both canopy spectral optical properties and background spectral reflectance rather than simple variations in leaf area index or percentage canopy closure. This suggests that satellite-derived changes in spectral vegetation indices may not be easily interpretable in terms of vegetation physiognomic properties at regional and global scales. Further studies of regional landscape component spectral reflectance properties are recommended to refine interpretation of remotely sensed vegetation indices.

引用

页码：190 / 203

页数：14

共 37 条

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