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Titolo:
Seasonal nutrient dynamics of forested floodplain soil influenced by microtopography and depth
Autore:
Stoeckel, DM; Miller-Goodman, MS;
Indirizzi:
Auburn Univ, Dept Agron & Soils, Auburn, AL 36849 USA Auburn Univ Auburn AL USA 36849 Dept Agron & Soils, Auburn, AL 36849 USA
Titolo Testata:
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
fascicolo: 3, volume: 65, anno: 2001,
pagine: 922 - 931
SICI:
0361-5995(200105/06)65:3<922:SNDOFF>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
FUMIGATION-EXTRACTION METHOD; MICROBIAL BIOMASS; ORGANIC-MATTER; LITTER DECOMPOSITION; WETLANDS; VARIABILITY; CALIBRATION; PHOSPHORUS; STREAM; SWAMP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Stoeckel, DM Auburn Univ, Dept Agron & Soils, Auburn, AL 36849 USA Auburn Univ Auburn AL USA 36849 Soils, Auburn, AL 36849 USA
Citazione:
D.M. Stoeckel e M.S. Miller-Goodman, "Seasonal nutrient dynamics of forested floodplain soil influenced by microtopography and depth", SOIL SCI SO, 65(3), 2001, pp. 922-931

Abstract

Edaphic and hydrologic influences on floodplain soil nutrient dynamics most be characterized in order to more fully understand ecosystem functions offorested floodplains, The objective of this study was to characterize the impacts of microtopography and depth on soil microbial processes related tonutrient dynamics in a forested floodplain soil. Nutritional and biological parameters were measured seasonally for 2 yr at paired plots representingtwo microtopographic classes (swales and slopes) and three soil profile locations-surface organic material, root zone (RZ, 0-0.1 m), and sub-root zone (SR, 0.2-0.3 m)- on the Coosawhatchie River floodplain, South Carolina, Litter decomposition dynamics followed trends previously described in the literature: N and P concentrations increased relative to C following litterfall, and the relative increase was greater in swales than on slopes. Mineralsoil on the Coosawhatchie floodplain was rich in total P compared with other sites. Soil N pools fluctuated together with C, while P was redistributed by floodwater independently of major C and N pools. As a result, P accumulated more in swale soil. Carbon/N ratios in RZ soil were seasonally constant, averaging 14 in swales and 19 on slopes. Carbon/total P ratios were more variable, ranging from 77 to 118 in swales and 151 to 246 on slopes. Microtopographic differences (<1 m) profoundly influenced nutrient dynamics, particularly P, of surface organic material and soil on this floodplain.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 18:50:23