Land use conversion in humid tropics influences soil carbon stocks and forms

Land use change is one of the most important drivers of excessive carbon dioxide (CO2) emission and is partly responsible for global warming. Certain land use systems promote the sequestering of excessive carbon from the atmosphere to the soil, while other systems accelerate C loss through emissions...

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Autores principales:	Oso,Viti, Rajashekhar Rao,B.K
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Climate change inorganic C loss-on-ignition method organic C sequestration soil fertility
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000200020
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spelling	oai:scielo:S0718-951620170002000202017-08-31Land use conversion in humid tropics influences soil carbon stocks and formsOso,VitiRajashekhar Rao,B.K Climate change inorganic C loss-on-ignition method organic C sequestration soil fertility Land use change is one of the most important drivers of excessive carbon dioxide (CO2) emission and is partly responsible for global warming. Certain land use systems promote the sequestering of excessive carbon from the atmosphere to the soil, while other systems accelerate C loss through emissions. Herein, a study was conducted to evaluate the soil C forms and carbon stocks in the soils of three land use systems (a pasture, field crop and cocoa plantation) that were developed following the conversion of grasslands in the humid lowland landscape of Papua New Guinea. A remarkable decline (P<0.001) in the total C concentration of the grassland soils was observed due to land conversion into either field crops (44%) or a cocoa plantation (28%). Among the land use systems, organic C was the dominant pool (78.1-86.9%) compared to inorganic C, which only contributed 13.1%-21.9% to the total C stock. The soil organic C stocks were present in the following order: grassland (217.9 Mg ha-1) > pasture (207.6 Mg ha-1) > cocoa plantation (139.4 Mg ha-1) > field crops (131.6 Mg ha-1). The results of this study indicated that the conversion of grasslands to other land use systems (such as a cocoa plantation and field crops) could lead to the depletion of soil C stocks.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.17 n.2 20172017-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000200020en10.4067/S0718-95162017005000039
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Climate change inorganic C loss-on-ignition method organic C sequestration soil fertility
spellingShingle	Climate change inorganic C loss-on-ignition method organic C sequestration soil fertility Oso,Viti Rajashekhar Rao,B.K Land use conversion in humid tropics influences soil carbon stocks and forms
description	Land use change is one of the most important drivers of excessive carbon dioxide (CO2) emission and is partly responsible for global warming. Certain land use systems promote the sequestering of excessive carbon from the atmosphere to the soil, while other systems accelerate C loss through emissions. Herein, a study was conducted to evaluate the soil C forms and carbon stocks in the soils of three land use systems (a pasture, field crop and cocoa plantation) that were developed following the conversion of grasslands in the humid lowland landscape of Papua New Guinea. A remarkable decline (P<0.001) in the total C concentration of the grassland soils was observed due to land conversion into either field crops (44%) or a cocoa plantation (28%). Among the land use systems, organic C was the dominant pool (78.1-86.9%) compared to inorganic C, which only contributed 13.1%-21.9% to the total C stock. The soil organic C stocks were present in the following order: grassland (217.9 Mg ha-1) > pasture (207.6 Mg ha-1) > cocoa plantation (139.4 Mg ha-1) > field crops (131.6 Mg ha-1). The results of this study indicated that the conversion of grasslands to other land use systems (such as a cocoa plantation and field crops) could lead to the depletion of soil C stocks.
author	Oso,Viti Rajashekhar Rao,B.K
author_facet	Oso,Viti Rajashekhar Rao,B.K
author_sort	Oso,Viti
title	Land use conversion in humid tropics influences soil carbon stocks and forms
title_short	Land use conversion in humid tropics influences soil carbon stocks and forms
title_full	Land use conversion in humid tropics influences soil carbon stocks and forms
title_fullStr	Land use conversion in humid tropics influences soil carbon stocks and forms
title_full_unstemmed	Land use conversion in humid tropics influences soil carbon stocks and forms
title_sort	land use conversion in humid tropics influences soil carbon stocks and forms
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000200020
work_keys_str_mv	AT osoviti landuseconversioninhumidtropicsinfluencessoilcarbonstocksandforms AT rajashekharraobk landuseconversioninhumidtropicsinfluencessoilcarbonstocksandforms
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Land use conversion in humid tropics influences soil carbon stocks and forms

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