Nutrient Addition Differentially Affects Soil Carbon Sequestration in Secondary Tropical Dry Forests: Early- versus Late-Succession Stages
Por:
Gamboa, AM, Hidalgo, C, De Leon, F, Etchevers, JD, Gallardo, JF, Campo, J
Publicada:
1 mar 2010
Resumen:
There is considerable interest in the potential use of soils to sequester carbon for climate change mitigation. As such, there is a need to evaluate the potential for carbon accumulation in tropical regions. We compared the effects of three annual additions of nitrogen and/or phosphorus on soil carbon and nitrogen contents and pools (bulk soil, macro-, meso-, and microaggregates) of two regenerating secondary tropical dry forest differing in nutrient status and succession stage (10-year-old early-succession stage and approximately 60-year-old late-succession stage). The selected forest sites were located on a shallow calcareous soil in the Yucatan Peninsula (Mexico). The primary production is limited by nitrogen and phosphorus in early-succession stage and by phosphorus in late-succession stage. In each forest site, four independent plots (12 x 12 m2) were established, the treatments being: controls and plots fertilized during three consecutive years with nitrogen, phosphorus, or nitro
Filiaciones:
Gamboa, AM:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
Campo, J:
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City 04510, DF, Mexico
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