Khatun, Kaysara

An assessment of climate change impacts on the tropical forests of Central America using the Holdridge Life Zone (HLZ) land classification system - 7 páginas : 2 ilustraciones, 3 tablas

36 referencias bibliográficas

Ecological models have predicted shifts in forest biomes, yet there have been
very few studies that have looked at the implications on carbon stocks due to
these shifts. Carbon is closely correlated to biomass and constitutes an impor
-
tant characteristic of the forest ecosystem. It has implications for conservation
and land use practices, especially for climate change mitigation strategies cur
-
rently under discussion, such as the Reduced Emissions from Deforestation and
Forest Degradation (REDD). This study couples the Holdridge Life Zone (HLZ)
classification with the ECHAM5 model, to evaluate the impacts of climate
change using the Special Report on Emissions Scenarios (SRES) A2, A1B and B1
for the Central American region. We utilize methodologies which combine bio
-
physical variables with model output to assess the impacts on carbon stocks for
two time periods, 2000 and 2100. Results show that overall the tropical cate
-
gory of the HLZ classification gains area as a consequence of one type of HLZ
shifting to another forest type. In many cases the shifts lead to some categories
of HLZ being lost in their entirety. Elevation-associated life zones are particu
-
larly vulnerable to future climatic changes. A strong point of our approach is
that differences between disaggregate regional and aggregate country levels
can be compared. We suggest that a critical focus of conservation and manage
-
ment efforts should be concentrated on where vulnerable biomes are at most
risk,
i.e.
, biomes that shift and/or reduce fall under the vulnerable category.

DOI 10.3832/ifor0743-006


BOSQUE TROPICAL
IMPACTO AMBIENTAL
CARBONO
BIOMASA
MODELOS
ECUACIONES
CAMBIO CLIMATICO
UTILIZACION DE LA TIERRA
CONSERVACION


BELICE
COSTA RICA
EL SALVADOR
GUATEMALA
HONDURAS
NICARAGUA
PANAMA
AMERICA CENTRAL