The origin and evolution of land plants in the Ordovician and Carboniferous reshaped the terrestrial environment, marine ecology, and atmospheric composition, ultimately triggering global climate change. Phosphorus (P) is a limiting nutrient for plants and can only be obtained from pedogenic weathering of bedrock (including rocks and deposits). In the Ordovician and Carboniferous, periodic and frequent volcanic eruptions at convergent plate margins formed the bedrock that elevated P supply for the terrestrial biosphere. Temporal variation of P availability reveals that volcanic P supply spiked at 474–465 Ma, 454–445 Ma, and 319–310 Ma, with the assembly of Gondwana and Pangaea supercontinents. The abundant P supported the crucial Phanerozoic ecological transitions marked by the episodically increased land plant biomass and emergence of non-vascular, vascular, and seed plants. The volcanism-driven evolution and expansion of land plants further accelerated rock weathering and enhanced organic carbon burial. This positive feedback eventually resulted in the ice ages in the Paleozoic. Therefore, the variation of P availability, dependent on the scale and P content of volcanic products, was strongly associated with the plate subduction during supercontinent assembly, revealing the significant impact of tectonism on terrestrial ecosystems.

奥陶纪和石炭纪陆地植物的起源和演化重塑了陆地环境、海洋生态和大气成分，最终引发了全球气候变化。磷 (P) 是植物的限制性营养元素，只能从基岩（包括岩石和沉积物）的土壤风化中获得。在奥陶纪和石炭纪，会聚板块边缘的周期性和频繁的火山喷发形成了提高陆地生物圈磷供应的基岩。P 可用性的时间变化表明，火山 P 供应在 474-465 Ma、454-445 Ma 和 319-310 Ma 时飙升，伴随着冈瓦纳和泛大陆超大陆的组装。丰富的P支持了关键显生宙生态转变的特点是陆地植物生物量的增加以及非维管植物、维管植物和种子植物的出现。火山作用驱动的陆地植物演化和扩张进一步加速了岩石风化和增强有机碳埋藏。这种正反馈最终导致了古生代的冰河时代。因此，P有效性的变化取决于火山产物的规模和P含量，与超大陆组装过程中的板块俯冲密切相关，揭示了构造活动对陆地生态系统的显着影响。