Differences between needle-leaves forest and broad-leaves forest from pseudo multidirectional observation data

Material type: 文書・図像類

Author: SOYAMA, Norikoほか

Publisher: 千葉大学環境リモートセンシング研究センター

Publication date: 2017-02-16

Material Format: Digital

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Note (General)：: type:text[ABSTRACT] Forest classes for global land cover data is important for global environmental studies. However, it is difficult to correctly cla...

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Material Type: 文書・図像類
Title: Differences between needle-leaves forest and broad-leaves forest from pseudo multidirectional observation data
Author/Editor: SOYAMA, Noriko
MURAMATSU, Kanako
DAIGO, Motomasa
KAJIWARA, Kouji
HONDA, Yoshiaki
Author Heading: SOYAMA, Noriko
MURAMATSU, Kanako
DAIGO, Motomasa
KAJIWARA, Kouji
HONDA, Yoshiaki
Publication, Distribution, etc.: 千葉大学環境リモートセンシング研究センター
Publication Date: 2017-02-16
Publication Date (W3CDTF): 2017-02-16
Alternative Title: 擬似的多方向観測データを用いた針葉樹林・広葉樹林の特徴抽出
Periodical title: CEReS環境リモートセンシングシンポジウム資料集
No. or year of volume/issue: 19
Volume: 19
Pages: 24-24
Text Language Code: eng
Target Audience: 一般
Note (General): type:text
[ABSTRACT] Forest classes for global land cover data is important for global environmental studies. However, it is difficult to correctly classify needle-leaves forest and broad-leaves forest using phenology information extracted from observation data as a nadir view. In this study, we attempted to differntiate needle-leaves and broad-leaves forests using MOD09GA and MYD09GA. To produce pseudo multidirectional satellite data, we selected several days of data with scannig widths overtapping along the crosstrack direction. We used the pseudo multidirectional data sets to study reflectance on four bands, as well as the variation with solar zenith and relative azimuth for NDVI (Normalized Difference Vegetation Index) and GVI (the green chlorophyll index). Data selection followed criteria aimed to reduce as much as possible the influence of viewing direction and terrain conditions. We found that NDVI and GVI change depending on the solar zenith and relative azimuth. Using data in limited ranges of solar zenith and relative azimuth, it was not possible to clearly show differences between the characteristics of needle-leaves forest and broad-leaves forest from pseudo multidirectional observation data. However, we found differences for both NDVI and GVI between nadir and stant data depending in the surface state of the forest.
Access Restrictions: 限定公開
Related Material (NCID): BA64563608
https://ci.nii.ac.jp/ncid/BA64563608
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 千葉大学 : 千葉大学学術成果リポジトリ