Tropical ecosystems that exist on mountainous terrain harbour enormous species and functional diversity. In addition, the morphology of these complex landscapes is dynamic. Stream channels respond to mountain uplift by eroding into rising rock bodies. Many local factors determine whether channels are actively downcutting, in relative steady‐state, or aggrading. It is possible to assess the trajectory of catchment‐level landscape evolution utilising lidar‐based models, but the effect of these trajectories on biogeochemical gradients and organisation of canopy traits across climatic and geochemical conditions remain uncertain. We use canopy trait maps to assess how variable erosion rate within catchments influence hillslope controls on canopy traits across Mt. Kinabalu, Borneo. While foliar nutrient content generally increased along hillslopes, these relationships were moderated by catchment responses to changing erosion pressure, with active downcutting associated with greater turnover in canopy traits along hillslopes. These results provide an understanding of geomorphic process controls on forest functional diversity.

中文翻译：

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地貌瞬变减轻了热带冠层叶片性状的地形控制。

存在于山区的热带生态系统蕴藏着巨大的物种和功能多样性。此外，这些复杂景观的形态是动态的。河道通过侵蚀成上升的岩体来响应山隆起。许多本地因素决定了渠道是处于积极削减状态，处于相对稳定状态还是正在恶化。可以使用基于激光雷达的模型评估集水区景观演化的轨迹，但是这些轨迹对气候和地球化学条件下生物地球化学梯度和冠层性状组织的影响仍然不确定。我们使用冠层性状图来评估流域内可变的侵蚀速率如何影响整个山地冠层性状的坡度控制。婆罗洲京那巴鲁。虽然叶面养分含量通常沿山坡增加，这些关系通过集水区对不断变化的侵蚀压力的响应而缓和，主动下坡与沿山坡的冠层性状的更新换代相关。这些结果提供了对森林功能多样性的地貌过程控制的理解。