古地理学报2026，Vol.28Issue(2)：708-723,16.DOI:10.7605/gdlxb.2025.078
志留纪—泥盆纪维管植物的辐射演化及对陆地碳库的潜在影响
The Silurian-Devonian radiation of vascular plants and the potential effects on terrestrial carbon stocks
摘要
Abstract
Vascular plants,as the major clade of land plants,represent the most important plant group that colonized the land during the Paleozoic.Fossil records demonstrate that vascular plants first appeared in the Silurian and then underwent significant radiation during the Devonian.Plants from the Silurian-Devonian periods represent the ancestors or stem groups of modern lineages such as the lycopsids,equisetopsids,filicopsids,and seed plants,foreshadowing their earliest differentiation.The total genus-level diversity of vascular plants gradually increased from the Silurian,reached the first peak during the Pragian,which was then followed by two decline-rise fluctuations,with one peak registrated during the late Givetian and another peak during the late Famennian.The vegetation types of the Silurian to Early Devonian include rhyniopsid herblands,zosterophyllopsid herblands and zosterophyllopsid-early euphyllo-phyte mixed herblands,with sporadic occurrences of shrubs and wetlands.During the Middle and Late Devonian,herblands,wetlands and shrubs continued to develop,while emerged new vegetation types such as cladoxylopsid forests,lycopsid forests,and progymnosperm forests.Along with the Silurian-Devonian radiation of vascular plants,the vegetation carbon stock significantly expanded,and the soil inorganic carbon stock also increased,as indicated by the dramatic increase of calcareous paleosols.Some Lower Devonian paleosols have inorganic carbon densities comparable to the modern maximum values.Since the Middle Devonian,the records of coal(paleo-histosols)gradually increased,indicating a significant rise in the amount of soil organic carbon.The increase of terrestrial carbon burial during the Silurian-Devonian was indicated by the accumulation of carbon-rich soils such as histosols and calcareous soils.Through diagenesis,carbon from surface system was converted into paleosols as a part of the lithosphere carbon stock,with an effect of long-term carbon sequestration.Future efforts,on one side,should be put into the systematics and classification of plant fossils,and as well as the study of paleobotanical community ecology and the classification of early vegetation.On the other side,the reconstruction of whole-plants and their communities,model simulations,and other methods could be conducted to estimate the vegetation carbon stocks of different time intervals.The information of surface soil carbon storage of different time intervals and burial efficiency of paleosols should be used to constrain the carbon cycle processes in Earth System models.关键词
植物登陆/植被演化/煤/古土壤/土壤有机碳/土壤无机碳/陆地碳埋藏/碳库Key words
plant terrestrialization/vegetation evolution/coal/paleosol/soil organic carbon/soil inorganic carbon/terrestrial carbon burial/carbon stocks分类
生物科学引用本文复制引用
薛进庄,钟涛,王徽,李炳鑫,杨琦琦,王嘉树..志留纪—泥盆纪维管植物的辐射演化及对陆地碳库的潜在影响[J].古地理学报,2026,28(2):708-723,16.基金项目
国家重点研发计划项目(编号:2022YFF0800200)和国家自然科学基金项目(编号:41722201)联合资助.[Co-funded by the National Key Research and Development Program of China(No.2022YFF0800200)and the National Natural Science Foundation of China(No.41722201)] （编号:2022YFF0800200）
