地学写作是科学写作的重要组成部分，对学生科学素养的培养具有重要价值。本研究对美国高中教材《地球科学 地质学、环境与宇宙（第二版 2023修订版）》中的地学写作进行了统计与分析，发现其具有强化科学素养导向、重视任务进阶设计、突出职业角色代入、融合社会性科学议题、开展项目式学习以及强调地学工具使用等特点。据此，本研究分别对我国地理教材编者和地理教师提供以下启示：地理教材编者应明晰科学写作设计逻辑、促进学生思维发展，设置“科学写作”专栏、设计多种类型任务，明确科学写作任务指向、提供写作的指导语；教师应转变写作教学理念、明晰写作评价导向，将丰富的社会资源转变为写作资源，创设包含职业角色信息的写作情境，注重任务驱动、培养学生高阶思维，引导学生在写作中进行创造性表达。

Geoscience writing, as an important part of scientific writing, is of great value to cultivate students’scientific literacy. This study conducts a statistical analysis of the geoscience writing in the American high school textbook“Earth Science Geology, Environment and Universe (Second Edition 2023 Revision)”, and fi nds that it has the characteristics of strengthening scientifi c literacy orientation, attaching importance to task progression design, paying attention to professional role substitution, integrating social science issues, carrying out project-based learning, and paying attention to the use of geoscience tools. Based on this, the following enlightenment is provided to geography textbook editors and geography teachers respectively : geography textbook editors should clarify the logic of scientifi c writing design, promote the development of students' thinking, set up“scientifi c writing”columns, design various types of tasks, and clarify the direction of scientifi c writing tasks, provide writing instructions; teachers should change the concept of writing teaching, clarify the orientation of writing evaluation, transform rich social resources into writing resources, create writing situations containing professional role information, pay attention to task-driven design, cultivate students' higher-order thinking, and guide students to express creatively in writing.