SciELO - Scientific Electronic Library Online

 
vol.21 número1Sensitivity of main downdraft features to vertical wind shear and ice-phase in a microburst-producing thunderstormImpact of the use of segregated streets in the elemental carbon concentrations in Santiago de Chile índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Atmósfera

versión impresa ISSN 0187-6236

Resumen

PEREZ-SUAREZ, M; FENN, M. E; CETINA-ALCALA, V. M  y  ALDRETE, A. The effects of canopy cover on throughfall and soil chemistry in two forest sites in the México City air basin. Atmósfera [online]. 2008, vol.21, n.1, pp.83-100. ISSN 0187-6236.

Throughfall and soil chemistry were compared in two sites with differing atmospheric deposition: Desierto de los Leones National Park (high atmospheric deposition) and Zoquiapan National Park (low atmospheric deposition). Throughfall fluxes of NO3-, SO42-, Ca, Mg and K were compared under two canopy cover types: Abies religiosa Schl. (fir) and Pinus hartwegii Lindl. (pine), in comparison with sites without cover canopy, e.g. forests clearings. Throughfall fluxes decreased in the following order: fir > pine > forest clearing. Nitrogen balance under canopy of fir and pine resulted in negative values for net throughfall of NH4+ at Desierto de los Leones and Zoquiapan, while NO3-, only resulted in negative values under canopy cover at the low deposition site. With few exceptions, concentrations of total C, N and S, soluble SO42-, and Ca2+ were higher in soil under fir canopies than under pine or in forest clearings. In polluted sites, the densely foliated fir canopies generally resulted in higher throughfall fluxes and soil accumulation of N, S and Mg compared to pine canopies or open areas. The elevated atmospheric depositions affect the functional process of forest ecosystem, particularly the throughfall and nutrients intern cycle, and these effects depend of the cover and present tree species.

Palabras clave : Throughfall; canopy leaf area; soil enrichment; México City air basin; atmospheric deposition.

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )

 

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