Estimation of volume and aboveground carbon sequestration of Eucalyptus camaldulensis at Lad Krathing plantation using remote sensing techniques
2010
Pattara Sawangdee(Kasetsart University, Bangkok (Thailand). Faculty of Forestry. Department of Forest Management) E-mail:p_net68@hotmail.com | Kankhajane Chuchip(Kasetsart University, Bangkok (Thailand). Faculty of Forestry. Department of Forest Management)
his study aimed to figure out the statistical relationship between the leaf area index (LAI) and stem volume and aboveground carbon stock of Eucalyptus trees in Lad Krathing plantation with 1-5 years age classes as well as the relationship between LAI and reflectance value of NIR band and vegetation indices derived from SPOT-5 satellite digital image. The study showed that the relationship between the LAI and volume was in form of power function with the high correlation coefficient (R sup (2)) of 0.62 to 0.97. In addition, the relationship between the carbon stock and LAI has also in form of power function with R sup (2) of 0.63 to 0.94. Furthermore, it was found that LAI was related with vegetation indices (NIR, NIR/R, NDVI) in form of simple linear regression equation with relatively high R sup (2) if separately analyzed by each age class but relatively low (R sup (2)=0.57) if analyzed by all ages. Based on field survey, the yield estimation of the plantation were 27,607 Cubic m by volume and 19,060 tons for total carbon sequestration. Meanwhile, the estimation based on satellite data was 28,173 Cubic m by volume and 19,201 tons by carbon stock. The result revealed that the estimation of tree volume and carbon stock based on satellite data has over value in comparison to field data.
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