跨学科主题学习以其情境的真实性、问题的复杂性和知识的整合性，天然适配兼具综合性和实践性的地理学科，对于提升地理关键能力具有不可替代的作用。本文以“江南地理笺：解码湿地”校本课程为例，构建 “主题选择—逆向设计—任务驱动—表现评价”的实施路径，探析如何通过跨学科主题学习提升学生地理学科关键 能力。

Cross-disciplinary thematic learning, characterized by the authenticity of situations, complexity of problems, and integration of knowledge, has an integration logic that is naturally compatible with the core attributes of comprehensiveness and practicality of geography as a discipline. It thus plays an irreplaceable role in enhancing students' key competencies in geography. Taking the school-based curriculum Jiangnan Geography Notes: Decoding Wetlands as a case study, this paper constructs an implementation path of "theme selection - backward design - task-driven learning - performance assessment" and explores how to improve students' key geographical competencies through interdisciplinary thematic learning.