水土保持学报2025，Vol.39Issue(3)：215-223,9.DOI:10.13870/j.cnki.stbcxb.2025.03.007
贵州省铝土矿山植被恢复短期土壤有机碳变化驱动因素
Driving Factors of Short-term Changes in Soil Organic Carbon during Vegetation Restoration in Bauxite Mines in Guizhou Province
摘要
Abstract
[Objective]To explore the changes in soil organic matter in the short term during vegetation restoration in bauxite mining areas and their driving factors,in order to provide basic data for rapidly increasing soil organic carbon in mining areas.[Methods]Taking a typical bauxite mining area in Guizhou Province as the research area,we analyzed soil environment,soil organic carbon and its active organic carbon components(particulate organic carbon,POC;readily oxidizable organic carbon,ROC;light fraction organic carbon,LFOC),carbon pool management index(CPMI),and the factors driving changes in soil organic carbon and its active components during the short term of vegetation restoration(recovery years include the current year,1 year,2 years and 3 years).[Results]1)Soil organic carbon content in the bauxite mining area was low,ranging from 13.781 to 24.566 g/kg,with the proportion of readily oxidizable organic carbon to total organic carbon increasing with the recovery years.2)Compared to the current year of recovery,short-term vegetation restoration significantly increased the carbon pool management index,with specific values ranked in the order of 3 years(39.46)>1 year(38.88)>2 years(32.26)>current year(16.65).3)Redundancy analysis showed that soil pH and bacterial community richness explained 40.2%and 22.8%of the variation in the content of organic carbon and its active organic carbon components,respectively.[Conclusion]During the short term of vegetation restoration in bauxite mining areas,readily oxidizable organic carbon is an important indicator of soil carbon pool,short-term vegetation restoration has increased the carbon pool management index,and the main factors influencing changes in soil organic carbon and its active organic carbon components are pH and bacterial richness.关键词
植被恢复/土壤有机碳/活性有机碳组分/碳库管理指数Key words
vegetation restoration/soil organic carbon/active organic carbon components/carbon pool management index分类
农业科技引用本文复制引用
周娜娜,罗帮林,冯娅瑛,曾睿菠,韩珍..贵州省铝土矿山植被恢复短期土壤有机碳变化驱动因素[J].水土保持学报,2025,39(3):215-223,9.基金项目
国家自然科学基金项目(42467043) （42467043）
贵州省教育厅高等学校科学研究项目(青年项目)(黔教技[2022]112号) （青年项目）
