Name
Abstract | ||
|---|---|---|
JERS-1/SAR images taken in 1990's and ALOS/PALSAR images taken in 2000's are used and examined the deforestation status during similar to 14 years. Many trees had been fallen by a typhoon hit in 2004 in a test site, Tomakomai. There is also a plantation area and the site show active change during the term. The forest stands could be roughly classified for four types, forest stands, vacant, where almost all trees were carried out, and two types of transitional stands from a forest to a vacant. Many deforested areas are easily detected by using the difference of backscattering coefficients between two images, if fallen trees have been carried out from the stands. The change from the normal forest to the vacant stands causes 3.1dB decrease in the sigma(HH)-H-0. On the other hands, transitional stands show almost same backscattering as the normal forest stands, although. Three-component scattering model shows surface scattering component accounts for 50% over the vacant stands, while volume scattering component accounts for similar to 60% over the forest stands. But the model doesn't show the clear difference between transitional forest site and normal forest. The temporal changes of the forest during 14 years are also examined for the plantation area. One stand show gradual increase of a 0 and the values seem to be saturated around 17.4 tons/ha (similar to 5m in average height). |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/IGARSS.2007.4423307 | IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-12: SENSING AND UNDERSTANDING OUR PLANET |
Keywords | Field | DocType |
forest monitoring, L-band SAR, polarimetry | Typhoon,Computer science,Remote sensing,Test site,Volume scattering,Deforestation | Conference |
Volume | Issue | ISSN |
null | null | 2153-6996 |
Citations | PageRank | References |
0 | 0.34 | 1 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Manabu Watanabe | 1 | 164 | 33.16 |
| M. Shimada | 2 | 795 | 145.65 |
| Kazuo Ouchi | 3 | 112 | 15.71 |
| Haipeng Wang | 4 | 1 | 2.75 |
| Masayuki Matsuoka | 5 | 48 | 11.77 |
| Motoyuki Sato | 6 | 229 | 29.54 |