WEKO3
アイテム
ANALYSIS OF MULTI-MODE PALSAR DATA TO DETECT FOREST DEGRADATION IN THE HUMID TROPICS
https://jaxa.repo.nii.ac.jp/records/4554
https://jaxa.repo.nii.ac.jp/records/455480b74ca7-5441-4511-a554-2281c705fd71
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
65135084.pdf (667.9 kB)
|
|
| Item type | テクニカルレポート / Technical Report(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||||||
| タイトル | ||||||||||||
| タイトル | ANALYSIS OF MULTI-MODE PALSAR DATA TO DETECT FOREST DEGRADATION IN THE HUMID TROPICS | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | ALOS | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | PALSAR | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | L-band | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | forest degradation | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | multi-mode | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | biomass | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Borneo | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | tropics | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_18gh | |||||||||||
| 資源タイプ | technical report | |||||||||||
| 著者 |
中山, 幹康
× 中山, 幹康
× Langner, Andreas
× Nakayama, Mikiyasu
|
|||||||||||
| 著者所属 | ||||||||||||
| 京都大学大学院農学研究科森林生態学研究室 | ||||||||||||
| 著者所属 | ||||||||||||
| 東京大学大学院新領域創成科学研究科国際協力学専攻 | ||||||||||||
| 著者所属（英） | ||||||||||||
| en | ||||||||||||
| Laboratory of Forest Ecology, Graduate School of Agriculture, Kyoto University | ||||||||||||
| 著者所属（英） | ||||||||||||
| en | ||||||||||||
| Department of International Studies, Graduate School of Frontier Science, University of Tokyo | ||||||||||||
| 出版者 | ||||||||||||
| 出版者 | 宇宙航空研究開発機構地球観測研究センター (JAXA)(EORC) | |||||||||||
| 出版者（英） | ||||||||||||
| 出版者 | Earth Observation Research Center, Japan Aerospace Exploration Agency (JAXA)(EORC) | |||||||||||
| 書誌情報 |
宇宙航空研究開発機構特別資料 en : JAXA Special Publication: Final Reports of the ALOS Research Announcement Programs 1&2, 2011 巻 JAXA-SP-11-007E, p. PI206-1-PI206-6, 発行日 2011 |
|||||||||||
| 抄録（英） | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | Selective logging is applied throughout the tropics causing high levels of forest degradation. Sustainable forest management has the potential to conserve biomass but is not widely applied in the field. Reduced impact logging can promote sustainable forestry but for that sake the degradation stage of a forest must be evaluated. Given a certain forest type, above-ground biomass values can be deduced from that data. Due to the limitation of any kind of satellite sensor to directly measure the biomass especially in complex and carbon-dense ecosystems such as the humid tropics, we analyzed the application of ALOS PALSAR multi-mode L-band radar data to what extent canopy openings can be detected, which describe the degradation stage of a forest. Such information can then be used to deduce the above-ground biomass. In comparison to optical data, which are hampered by the frequent cloud cover in the tropics, radar sensors have the great advantage to derive data irrespective of weather conditions. In this study, Phased Array type L-band Synthetic Aperture Radar (PALSAR) level 1.5 data with 12.5m spatial resolution, 34.3 degree incidence angle and HH-HV polarization were analyzed for the purpose of forest degradation monitoring. For that sake, the different polarization modes were compared with each other. Study site was a production forest in Sabah, Malaysian Borneo. High resolution optical data from the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) and the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) sensor onboard the ALOS platform in combination with ground-truth data were used to validate the PALSAR data. Our results showed that in comparison to the HH data, the HV band shows a higher accuracy in separating degraded forests from pristine forests. In the HV polarization mode it was possible to distinguish highly degraded secondary forests with an open crown cover dominated by regrowth from pristine forests but it turned out that a separation of forests, which have been degraded using conventional selective logging techniques - the prevailing logging type in Borneo - was not feasible. Another limitation was caused by foreshortening and radar shadowing due to hilly terrain. Summarizing, it has to be stated that HV polarized L-band data from the PALSAR sensor can be used to screen for degradation processes occurring before forest conversion, but are too restricted to distinguish between pristine and conventionally logged-over forests. However, the application of PALSAR L-band data in combination with other sensor data, such as for example AVNIR-2 seems to be a very promising approach. | |||||||||||
| 内容記述 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | 形態: カラー図版あり | |||||||||||
| 内容記述 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | 形態: DVD-ROM1枚 | |||||||||||
| 内容記述（英） | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | Physical characteristics: Original contains color illustrations | |||||||||||
| 内容記述（英） | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | Note: One DVD-ROM | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 1349-113X | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA11984031 | |||||||||||
| 資料番号 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | 資料番号: AA0065135084 | |||||||||||
| レポート番号 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | レポート番号: JAXA-SP-11-007E | |||||||||||
