TY - UNPB
T1 - A comparison of remotely sensed data products for discrimination of tropical forest regeneration stage and pathway
AU - Lucas, Richard
AU - Xiao, Xiuxhun
AU - Frokling, Steve
AU - Hagen, S.
PY - 2001/5/1
Y1 - 2001/5/1
N2 - Secondary forests in the Amazon Basin may play an important role in the basin-wide carbon dynamic and budget. However, there are still large uncertainties of areal extent, spatial distribution, successional stage and age structure of secondary forests in the Amazon Basin. In this study, we examined spectral characteristics of secondary forests with different ages and pathways at Manaus, Brazil, using image data from Landsat 5 TM, Landsat 7 ETM+, AVHRR, VEGETATION and MODIS sensors as well as detailed field data of age and species composition of secondary forests in 36 sites of Manaus. We establish the potential of Terra-1 Moderate Resolution Imaging Spectrometer (MODIS) data for discriminating and mapping tropical forest regeneration stages in the Brazilian Legal Amazon, in terms of both their age and pathway. By examining spatial data from several sensors, in tandem with a ground based database of land use, we can evaluate reflectance trajectories of the regenerating forests. In using MODIS data, many difficulties encountered in local to regional scale mapping and discrimination of regeneration stage using AVHRR and Landsat sensor data can be largely overcome. The study concludes that, given the wide area coverage provided by MODIS, the potential exists to routinely generate maps of regeneration stage and even pathway for the Brazilian Legal Amazon. Such capacity is crucial in terms of refining the regional carbon budget and also better understanding the dynamics of tropical forest regeneration in response to land use.
AB - Secondary forests in the Amazon Basin may play an important role in the basin-wide carbon dynamic and budget. However, there are still large uncertainties of areal extent, spatial distribution, successional stage and age structure of secondary forests in the Amazon Basin. In this study, we examined spectral characteristics of secondary forests with different ages and pathways at Manaus, Brazil, using image data from Landsat 5 TM, Landsat 7 ETM+, AVHRR, VEGETATION and MODIS sensors as well as detailed field data of age and species composition of secondary forests in 36 sites of Manaus. We establish the potential of Terra-1 Moderate Resolution Imaging Spectrometer (MODIS) data for discriminating and mapping tropical forest regeneration stages in the Brazilian Legal Amazon, in terms of both their age and pathway. By examining spatial data from several sensors, in tandem with a ground based database of land use, we can evaluate reflectance trajectories of the regenerating forests. In using MODIS data, many difficulties encountered in local to regional scale mapping and discrimination of regeneration stage using AVHRR and Landsat sensor data can be largely overcome. The study concludes that, given the wide area coverage provided by MODIS, the potential exists to routinely generate maps of regeneration stage and even pathway for the Brazilian Legal Amazon. Such capacity is crucial in terms of refining the regional carbon budget and also better understanding the dynamics of tropical forest regeneration in response to land use.
M3 - Working paper
BT - A comparison of remotely sensed data products for discrimination of tropical forest regeneration stage and pathway
ER -
