Abstract A terrestrial ecosystem collapse event accompanied by extensive soil erosion has been widely recorded in marine sedimentary rocks at the vicinity of the end-Permian mass extinction. However, the precise timing of this event and its impact on the marine extinction have not yet been ascertained. Here we present an organic geochemical study of non-marine and marine sections from the South China Craton, which shows that terrestrial ecosystem collapse was accompanied by a soil erosion event, and was followed by the end-Permian marine extinction. Two separate events devastated the terrestrial ecosystem prior to the marine extinction event, over a timespan of dozens of kyr. Bacteria flourished in the non-marine section coeval with a decline in terrestrial plants and in the marine section during the end-Permian marine extinction. A proto-recovery of herbaceous plants (not woody plants) occurred dozens of kyr after the end-Permian marine extinction and coincided with a global warming maximum and oceanic anoxia/euxinia.

中文翻译：

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二叠纪末期海洋灭绝前的陆地生态系统崩溃和土壤侵蚀：来自海洋和非海洋记录的有机地球化学证据

摘要 在二叠纪末大灭绝附近的海相沉积岩中广泛记录了伴随大面积土壤侵蚀的陆地生态系统崩溃事件。然而，这一事件的确切时间及其对海洋灭绝的影响尚未确定。在这里，我们对华南克拉通的非海洋和海洋剖面进行了有机地球化学研究，表明陆地生态系统崩溃伴随着水土流失事件，随后是二叠纪末海洋灭绝。在海洋灭绝事件之前，两次独立的事件摧毁了陆地生态系统，时间跨度为数十 kyr。细菌在与陆生植物减少同时期的非海洋部分和二叠纪末期海洋灭绝期间的海洋部分大量繁殖。