生态学杂志2024，Vol.43Issue(11)：3350-3356,7.DOI:10.13292/j.1000-4890.202411.007
不同树种混交对团聚体有机碳及其组分的早期影响
Early effects of different tree species mixing on aggregate organic carbon fractions
摘要
Abstract
Plantations play an important role in carbon sequestration,with different effects of tree species mixture on soil organic carbon.In this study,we examined the effects of three typical two-species mixed plantations,Pinus massoniana+Castanopsis hystrix(PC),Pinus massoniana+Erythrophleumfordii(PE),and Erythrophleumfordii+Mytilaria laosensis(EL),on aggregate organic carbon and its fractions in the south subtropical area,as well as the driving factors of organic carbon at different aggregate levels.The results showed that EL promoted the formation of large macroaggregates.The highest value of mean weight diameter of aggregates was observed in EL(1.71 mm),followed by PE(1.39 mm)and PC(1.26 mm).The macroaggregate organic carbon content(＞2 mm)was 1.8 and 1.4 times higher in EL than those of PC and PE,respectively.EL promoted the accumulation of particulate organic carbon within aggregates,which was mainly originated from coarse and fine organic particulate carbon within large macroaggregates,and coarse particulate organic carbon within small macroaggregates.EL promoted the stability of aggregates and the accumulation of aggregate organic carbon by increasing inputs of leaf litter and roots.关键词
混交林/团聚体稳定性/团聚体有机碳/碳组分Key words
mixed plantation/aggregate stability/aggregate organic carbon/carbon fraction引用本文复制引用
叶钰倩,王晖,栾军伟,马金豪,明安刚,刘世荣..不同树种混交对团聚体有机碳及其组分的早期影响[J].生态学杂志,2024,43(11):3350-3356,7.基金项目
国家自然科学基金项目(31930078)、中国林科院基本科研业务费项目(CAFYBB2021ZWO01)和国家重点研发计划课题项目(2021YFD2200402和2021YFD2200405)资助. （31930078）
