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Using time series PALSAR gamma nought mosaics for automatic detection of tropical deforestation: A test study in Riau, Indonesia
https://jaxa.repo.nii.ac.jp/records/22535
https://jaxa.repo.nii.ac.jp/records/225350f24d872-21c4-427e-b2d6-a30171693a00
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2015-06-24 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Using time series PALSAR gamma nought mosaics for automatic detection of tropical deforestation: A test study in Riau, Indonesia | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ALOS PALSAR | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Gamma nought | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Indonesia | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | REDD + | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Deforestation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Automatic change detection | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Motohka, Takeshi
× Motohka, Takeshi× Shimada, Masanobu× Uryu, Yumiko× Setiabudi, Budi |
|||||
著者所属(英) | ||||||
en | ||||||
Japan Aerospace Exploration Agency(JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
Japan Aerospace Exploration Agency(JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
World Wildlife Fund | ||||||
著者所属(英) | ||||||
en | ||||||
Southeast Asian Regional Centre for Tropical Biology (SEAMEO BIOTROP) | ||||||
出版者(英) | ||||||
出版者 | Elsevier | |||||
書誌情報 |
en : Remote Sensing of Environment 巻 155, p. 79-88, 発行日 2014-12 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | This study intended to demonstrate the effectiveness of phased array type L-band synthetic aperture radar (PALSAR) time series mosaics for automatic detection of tropical deforestation in Riau province, Indonesia. Using six time series PALSAR mosaics, the characteristics of HH and HV gamma nought (γ0) in natural forests and deforested areas from 2007 to 2010 and the accuracy of deforestation detection by using a threshold were investigated. We obtained the following results: (1) Applying a simple thresholding method to time series differences of γ0HV was effective for fully automatic detection of deforestation areas. When we used a fixed threshold, the accuracy ranged from 72% to 96% (average of 87%). (2) γ0HH did not always show systematic changes after deforestation. (3) The temporal variation of γ0 for deforested areas was larger than that for natural forests. These variations in γ0 were correlated with 10-day accumulated precipitation. High accumulated precipitation decreased the γ0 difference between deforested areas and natural forests, causing decreased accuracy of deforestation detection. (4) Integration of the results from two different dates in a given year can reduce the detection error due to time variations and provide highly accurate results (average accuracy of 91%, minimum of 82%). The accuracy values quoted except hilly areas, shadow, and lay-over. The proposed method is effective for detection of deforestation larger than 1 ha. The deforestation mapping method proposed in the study can be utilized for assessment of yearly changes in forested areas and is useful for tracking changes in forest cover on large scales. | |||||
内容記述(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Accepted: 2014-04-03 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0034-4257 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00805651 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1016/j.rse.2014.04.012 | |||||
関連名称 | info:doi/10.1016/j.rse.2014.04.012 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: PA1510033000 |