Abstract Denudation, including both chemical and mechanical processes, is of high relevance for Earth surface and landscape development and the transfer of solutes and sediments from headwater systems through main stem of drainage basin systems to the world oceans. The better understanding of possible effects of ongoing and accelerated environmental changes on present-day denudation requires systematic and quantitative studies on the actual drivers of denudational processes in differentiated landscape controls. Only if we have an improved knowledge of drivers, mechanisms and rates of contemporary denudational processes across a range of different selected climatic environments, possible effects of global environmental changes on denudation can be better assessed. However, a systematic geomorphologic comparison of present-day denudation rates in different defined climatic zones combined with a coordinated analysis and compilation of the respective key controls of denudation that is presently occurring in clearly defined drainage basin systems in the different selected morphoclimatic settings is still largely missing. The International Association of Geomorphologists (IAG) Working Group on Denudation and Environmental Changes in Different Morphoclimatic Zones (DENUCHANGE) is since 2017 helping to close this still existing knowledge gap and contributes to a better understanding of the possible effects of global environmental changes on contemporary Earth surface systems.

中文翻译：

---

国际地貌学家协会 (IAG) 不同地貌气候区剥蚀和环境变化工作组 (DENUCHANGE)：科学需求、研究目标、关键活动和产品

摘要 剥蚀，包括化学和机械过程，与地球表面和景观发展以及溶质和沉积物从源头系统通过流域系统的主干向世界海洋的转移具有高度相关性。更好地了解持续和加速的环境变化对当今剥蚀的可能影响需要对差异景观控制中剥蚀过程的实际驱动因素进行系统和定量研究。只有我们对一系列不同选定气候环境中当代剥蚀过程的驱动因素、机制和速率有了更好的了解，才能更好地评估全球环境变化对剥蚀的可能影响。然而，对目前不同定义气候区的剥蚀率进行系统地貌比较，并结合协调分析和汇编目前在不同选择的地形气候环境中明确定义的流域系统中发生的剥蚀的各自关键控制措施。国际地貌学家协会 (IAG) 不同地貌气候区剥蚀和环境变化工作组 (DENUCHANGE) 自 2017 年以来一直在帮助缩小这一仍然存在的知识差距，并有助于更好地了解全球环境变化对当代地球的可能影响表面系统。