DOI: 10.1016/j.jag.2014.11.012
Scopus记录号: 2-s2.0-84943612399
论文题名: Spectral reflectance patterns and seasonal dynamics of common understory types in three mature hemi-boreal forests
作者: Nikopensius M ; , Pisek J ; , Raabe K
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2015
卷: 43 起始页码: 84
结束页码: 91
语种: 英语
英文关键词: Hemi-boreal
; Reflectance
; Spectroscopy
; Understory
Scopus关键词: algorithm
; boreal forest
; data set
; remote sensing
; seasonal variation
; spectral reflectance
; understory
英文摘要: Due to the growing demand on more accurate prediction of biophysical properties (e.g., leafarea index) or carbon balance models based on remotely sensed data, the understory effect needs to be separated from the overstory. Reflectance models can provide possibility to model and retrieve understory reflectance over large scales, but ground truth data is needed to validate such models and algorithms. In this study, we documented the seasonal variation (April-September) and spectral changes occurring in understory layers of a typical European hemi-boreal forest. The understory composition was recorded and its spectra measured with an ASD FieldSpec Hand-Held UV/VNIR Spectroradiometer eight times at four site types during the growing period (from May to September) in 2013. The collected dataset presented within this study would be of much use to improve and validate algorithms or models for extracting spectral properties of understory from remote sensing data. It can be also further used as a valuable input in radiative transfer simulations that are used to quantify the roles of forest tree layer and understory components in forming a seasonal reflectance course of a hemi-boreal forest, and the upcoming phases of the RAdiation Model Intercomparison (RAMI) experiment. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79470
Appears in Collections: 气候变化事实与影响
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作者单位: Tartu Observatory, Tõravere, Tartumaa, Estonia
Recommended Citation:
Nikopensius M,, Pisek J,, Raabe K. Spectral reflectance patterns and seasonal dynamics of common understory types in three mature hemi-boreal forests[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,43