Regional tropical deforestation detection using ALOS PALSAR 50 m mosaics in Riau province, Indonesia

Regional tropical deforestation detection using ALOS PALSAR 50 m mosaics in Riau province, Indonesia

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for £75.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

ALOS PALSAR has provided a five-year archive of systematic global tropical forest coverage, released as slope-corrected and ortho-rectified 50 m mosaic products by JAXA, which are of great help to monitor forest changes. Based on the mosaics, a map of deforestation between the years 2007 and 2008 is built for Riau province, Indonesia, achieving a detection rate of over 86% at a false alarm rate of 20%, calculated by treating independent World Wildlife Fund (WWF) 2007 and 2008 maps as a reference. Non-forest is discriminated from forest by thresholding the HH/HV ratio in the PALSAR data. Deforestation is then estimated by detecting non-forest in the 2008 synthetic aperture radar (SAR) image (acquired close in time to the WWF 2008 reference map) within the region identified as natural forest in the WWF 2007 reference map. This reduces the errors caused by comparing the change detection between the bi-temporal SAR images with the WWF reference maps that are temporally mismatched with the SAR data, leading to more realistic estimates of the ability of PALSAR to detect deforestation than was previously reported.


    1. 1)
      • 1. Forest Survey of India, Ministry of Environment and Forest: ‘State of Forest Report 2003f accessed November 2011.
    2. 2)
      • 2. INPE: ‘Monitoring of the Forestry Cover of Amazonia from Satellites: projects PRODES, DETER, DEGRAD and QUEIMADAS 2007–2008 accessed November 2011.
    3. 3)
    4. 4)
    5. 5)
      • 5. Uryu, Y., Mott, C., Foead, N., et al: ‘Deforestation, forest degradation, biodiversity loss and CO2 emissions in Riau, Sumatra, Indonesia accessed November 2011.
    6. 6)
      • 6. Uryu, Y., Purastuti, E., Laumonier, Y., et al : ‘Sumatra's forests, their wildlife and the climate. Windows in time: 1985, 1990, 2000 and 2009 accessed November 2011.

Related content

This is a required field
Please enter a valid email address