Fire-Sphere Cycle (FSC) Earth System Coupling Model: A Unified Framework for Interpreting Life Origin and Evolution, Algal Productivity, Fossil Energy Enrichment, and Global Marine Mass Extinctions

This record contains both Chinese and English preprint versions of the FSC model. This revised manuscript systematically integrates and upgrades the author's previous preliminary preprint series——covering life origin, mass extinction, and fossil energy accumulation respectively——and supersedes the earlier V1 version, presenting a complete, self-consistent, and falsifiable Earth-system theoretical framework. The study proposes the Fire-Sphere Cycle (FSC) coupled model, establishing a dual evolutionary paradigm of long-term wildfire steady-state stress + short-term catastrophic termination. It unifies the mechanisms of life origin, ecological succession, carbon cycling, mass extinction, and fossil energy accumulation, resolving long-standing interdisciplinary contradictions in Earth system science. The Chinese version is intended for domestic academic communication and institutional collaboration; the English version is prepared for international preprint dissemination.