清水江文书是明末至民国期间贵州清水江流域苗侗民族创造并传承至今的民间文献遗产,具有多重学术研究价值。本文选择一块地名为“冉学诗”的家族公有林地为研究对象,依时间坐标梳理与之相关的契约文书,并从林地买卖、“佃山造林”与“青山”买卖三个视角来探讨苗侗民族林业生产投资之效益。 The Qingshui River Documents are the folk literature heritage created and inherited by the Miao and Dong nationalities in the Qing River in Guizhou during the period from the late Ming Dynasty to the Republic of China from the Ming Dynasty to the Republic of China, and have multiple academic research values. This article chooses a family-owned forest land named “Ran Xue Shi” as the object of study, sort out the contractual instruments related to it according to the time coordinate, and trades and sells the forest land, “Dian Shan afforestation” and “Aoyama” Viewing the Benefit of Investment in Forestry Production of Miao and Dong Ethnic Groups.