环境科学
表土
土壤碳
固碳
土地利用
森林砍伐(计算机科学)
土壤水分
土地覆盖
土地利用、土地利用的变化和林业
植树造林
农林复合经营
水文学(农业)
土壤科学
地质学
生态学
二氧化碳
程序设计语言
岩土工程
生物
计算机科学
作者
Miriam Muñoz‐Rojas,António Jordán,Lorena M. Zavala,Diego de la Rosa,Sameh Kotb Abd-Elmabod,María Anaya‐Romero
摘要
Abstract During the last few decades, land use changes have largely affected the global warming process through emissions of CO 2 . However, C sequestration in terrestrial ecosystems could contribute to the decrease of atmospheric CO 2 rates. Although Mediterranean areas show a high potential for C sequestration, only a few studies have been carried out in these systems. In this study, we propose a methodology to assess the impact of land use and land cover change dynamics on soil organic C stocks at different depths. Soil C sequestration rates are provided for different land cover changes and soil types in Andalusia (southern Spain). Our research is based on the analysis of detailed soil databases containing data from 1357 soil profiles, the Soil Map of Andalusia and the Land Use and Land Cover Map of Andalusia. Land use and land cover changes between 1956 and 2007 implied soil organic C losses in all soil groups, resulting in a total loss of 16·8 Tg (approximately 0·33 Tg y −1 ). Afforestation increased soil organic C mostly in the topsoil, and forest contributed to sequestration of 8·62 Mg ha −1 of soil organic C (25·4 per cent). Deforestation processes implied important C losses, particularly in Cambisols, Luvisols and Vertisols. The information generated in this study will be a useful basis for designing management strategies for stabilizing the increasing atmospheric CO 2 concentrations by preservation of C stocks and C sequestration. Copyright © 2012 John Wiley & Sons, Ltd.
科研通智能强力驱动
Strongly Powered by AbleSci AI