SciELO - Scientific Electronic Library Online

 
vol.17 número2Anaerobic degradation of municipal organic waste among others composting techniques improves N cycling through waste-soil-plant continuum índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Journal of soil science and plant nutrition

versión On-line ISSN 0718-9516

Resumen

OSO, Viti  y  RAJASHEKHAR RAO, B.K. Land use conversion in humid tropics influences soil carbon stocks and forms. J. Soil Sci. Plant Nutr. [online]. 2017, vol.17, n.2, pp.543-553. ISSN 0718-9516.  http://dx.doi.org/10.4067/S0718-95162017005000039.

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.

Palabras clave : Climate change; inorganic C; loss-on-ignition method; organic C; sequestration; soil fertility.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons