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Mapping rubber stand ages in Luangnamtha district (Northern Laos) usingNDVI and LSWIfrom Landsat images |
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| รหัสดีโอไอ | |
| Creator | Naruemol Kaewjampa |
| Title | Mapping rubber stand ages in Luangnamtha district (Northern Laos) usingNDVI and LSWIfrom Landsat images |
| Contributor | Saysongkham Sayavong, Roengsak Katawatin, Chuleemas Boonthai Iwai, Sitthisak Moukomla, Johan Oszwald,Alain Pierret |
| Publisher | Asia-Pacific Journal of Science and Technology |
| Publication Year | 2562 |
| Journal Title | Asia-Pacific Journal of Science and Technology |
| Journal Vol. | 24 |
| Journal No. | 2 |
| Page no. | 1-13 |
| Keyword | Rubber stand age,Landsat 8 OLI,Google Earth Imagery. |
| URL Website | https://www.tci-thaijo.org/index.php/APST |
| Website title | https://www.tci-thaijo.org/index.php/APST/article/view/152709 |
| ISSN | 2539-6293 |
| Abstract | Over the recent past, rubber tree plantations have rapidly expanded across vast tracts of Northern Laos. Remotely assessing rubber stand age is invaluable to monitor and predict the impacts of such an extensive and rapid land use change. This study presents the classification of rubber plantation areas versus non-rubber plantation areas, and the potential of two vegetation indices, namely NDVI and LSWI, for mapping rubber stand ages. Spectral signatures were derived from Landsat OLI imagesof Luangnamtha districtacquired on 5thMarch and 14thMarch2017, including Band 4 (RED), Band 5 (NIR), and Band 7 (SWIR), captured at the time of the year corresponding to the beginning of the foliation of rubber tree, with a spatial resolution of 30m. The work shows that the classification has a high accuracy of 92% and 0.89 for the overall accuracy and the Kappa coefficient, respectively. The producer's and user's accuracies of rubber stand ages were 75-92%, and 75-91% for the three age groups (< 7, 7-12, and > 12 years old). Overall accuracy and Kappa coefficientswere87 and 80%, and 0.79 and 0.67 for NDVI and LSWI indices, respectively. Wealso foundthat LSWI values were larger than NDVI when rubber stand age is greater than 7 years old, but NDVI showed better overall accuracy than LSWI at the beginning of the rubber tree foliation. |
