Secondary tropical forests that are in a state of regeneration following clearing for agriculture are now more abundant than primary forests. Yet, despite their large spatial extent and important role in the global carbon (C) cycle, secondary tropical forests are understudied, which challenges our ability to predict how tropical landscapes will respond to future disturbance and global change. We summarize research advances on alterations to C and nutrient dynamics during reforestation and how these are influenced by ecosystem state factors. During forest succession, aboveground biomass stocks and litter fluxes increase in a predictable way, but patterns in soil C dynamics are highly variable. The heterogeneous response of nutrients to reforestation is influenced by multiple factors, including losses incurred during prior land use and management. In contrast to primary tropical forests, where productivity is often limited by rock-derived nutrients, secondary forest growth may be more limited by nutrients f...

中文翻译：

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次生热带森林演替过程中的生态系统过程和生物地球化学循环

在为农业开垦后处于再生状态的次生热带森林现在比原始森林更丰富。然而，尽管次生热带森林在全球碳 (C) 循环中具有很大的空间范围和重要作用，但它们的研究却很少，这挑战了我们预测热带景观将如何应对未来干扰和全球变化的能力。我们总结了重新造林过程中 C 和养分动态变化的研究进展，以及这些变化如何受到生态系统状态因素的影响。在森林演替期间，地上生物量库和凋落物通量以可预测的方式增加，但土壤碳动态的模式变化很大。养分对重新造林的异质反应受到多种因素的影响，包括先前土地使用和管理期间发生的损失。