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Carbon accumulations by stock change approach in tropical highland forests of Chiapas, mexico

Journal of Forestry Research 2020年第6期31卷 2479-2493页

作者： Deb R.Aryal Roldan Ruiz-Corzo CONACYT-UNACH Facultad de Ciencias Agrono´micasUniversidad Auto´noma de ChiapasCarretera Ocozocoautla-Villaflores km 84.530470 VillafloresCHISMexico Facultad de Ciencias Agrono´micas Universidad Auto´noma de ChiapasCarretera Ocozocoautla-Villaflores km 84.530470 VillafloresCHISMexico

Changes in forest biomass and soil organic carbon reserves have strong links to atmospheric carbon dioxide *** activities such as livestock grazing,forest fires,selective logging and firewood extraction are the common disturbances that affect the carbon dynamics of the forest ***,we hypothesized that such anthropogenic activities significantly reduce the carbon stocks and accumulation rates in the tropical highland forests of the Sierra Madre de Chiapas in southern *** sampled the Pinus oocarpa Scheide dominated forests within the elevation range of 900 to 1100 m above sea level in 2010,2014 and *** measured the stand structural properties and used the reported allometric equations to calculate the tree carbon *** change approach was used to calculate carbon accumulation *** results showed a gradual increase in carbon storage over the 7-year period from 2010 to 2017,but the rate of increase varied significantly between the study *** aboveground carbon stock was 107.25±11.77 Mg ha-1 for the site with lower anthropogenic intensity,compared to 74.29±16.85 Mg ha-1 for the site with higher *** current annual increment for the forest with lower anthropogenic intensity was 7.81±0.65 Mg ha-1 a-1,compared to 3.87±1.03 Mg ha-1 a-1 in the site with high anthropogenic *** at varying rates,these forests are functioning as important carbon *** results on carbon accumulation rates have important implications in greenhouse gas mitigations and forest change modelling in the context of changing global climate.

关键词： Anthropogenic disturbances Biomass Carbon accumulation rates Forest carbon pools Forest structure southern mexico

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