SOIL ORGANIC CARBON CONTENT UNDER DIFFERENT FOREST CONDITIONS: MONARCH BUTTERFLY BIOSPHERE RESERVE, MEXICO

作者：Perez Ramirez Silvia; Isabel Ramirez M; Jaramillo Lopez Pablo F; Bautista Francisco

来源：Revista Chapingo, Serie Ciencias Forestales y del Ambiente, 2013, 19(1): 157-173.

DOI：10.5154/r.rchscfa.2012.06.042

• Soil carbon
• soil degradation
• forest disturbance
• forest harvesting
• monarch butterfly habitat

Globally, the soil stores twice as much carbon as the atmosphere and nearly twice the amount stored in vegetation. Carbon storing capacity of the soil depends on its properties and land use. The aim of this study was to analyze the soil organic carbon content under different forest conditions within mountainous forests of the Monarch Butterfly Reserve in Mexico. We defined six sampling groups based on three forest conditions (conserved, harvested and disturbed) and two vegetation types (sacred fir and pine-oak). We calculated the carbon stock of four complete soil profiles in each group (N=24), starting with the A horizon. Results show differences in SOC content in soils under different forest types and forest conditions. Conserved sacred fir stands have an average SOC of 153 Mg.Cha(-1), while harvested and disturbed stands have 95 and 125 Mg.Cha(-1), respectively. In the pine-oak forests, average SOC content of conserved stands is 103 MgC.ha(-1), while harvested and disturbed stands are 39 and 13 MgC.ha(-1), respectively. Conserved forests hold 40-80 % of SOC within the A horizons. Therefore, SOC content should be taken into consideration when assessing the impact. of forest management or any other forest conservation policy.

• 出版日期2013-4