2017
COCIBA
Esteban Suárez
Páramo de Ecuador
paramo of Ecuador
peatlands
Multidate, multisensor remote sensing reveals high density of carbon-rich mountain peatlands in the paramo of Ecuador
Este artículo fue publicado en
Global Change Biology
y se lo llevó a cabo con el apoyo investigativo de
Esteban Suárez y otros profesionales.
http://onlinelibrary.wiley.com/doi/10.1111/gcb.13807/abstract
Abstract
Tropical peatlands store a significant
portion of the global soil carbon (C) pool. However,
tropical mountain peatlands contain extensive peat soils that have yet to be
mapped or included in global C estimates. This
lack of data hinders our ability to
inform policy and apply sustainable management practices to these peatlands that
are experiencing unprecedented high rates of land use and land cover change. Rapid
large-scale mapping activities are urgently needed to quantify tropical wetland
extent and rate of degradation. We tested a combination of multidate, multisensor
radar and optical imagery (Landsat TM/PALSAR/RADARSAT-1/TPI image stack) for
detecting peatlands in a 2715 km2 area in the high elevation mountains of the
Ecuadorian p aramo. The map was combined with an extensive soil coring data set
to produce the first estimate of regional peatland soil C storage in the p aramo. Our
map displayed a high coverage of peatlands (614 km2) containing an estimated
128.2 9.1 Tg of peatland belowground soil C within the mapping area. Scaling-up
to the country level, p aramo peatlands likely represent less than 1% of the total land
area of Ecuador but could contain as much as ~23% of the above- and belowground
vegetation C stocks in Ecuadorian forests. These mapping approaches provide an
essential methodological improvement applicable to mountain peatlands across the
globe, facilitating mapping efforts in support of effective policy and sustainable
management, including national and global C accounting and C management efforts.
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