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本文探讨了近2000年来三川河、湫水河流域人口、耕地的发展史,初步结论是(1)从西汉到明中叶,农垦并非本区土壤侵蚀的主因,导致植被破坏和水土流失的主因是自然力与某些时期传统的过度放牧;(2)明弘治年间以后,本区人口逐步增加,开始垦种坡地;(3)清初施行“滋生人丁永不加赋”及“摊丁入亩”等鼓励政策,促进了人口和耕地的无限制增长;(4)清代到上世纪90年代的350年,由于人口飞跃增长,陡坡地大量开垦,是土壤侵蚀加速时期
This paper explores the history of the population and cultivated land in the Sanchuanhe and Huangshuihe basins over the past 2000 years. The preliminary conclusions are: (1) From the Western Han Dynasty to the mid-Ming Dynasty, land reclamation is not the main cause of soil erosion in this area, and the main causes of vegetation damage and soil erosion are Natural forces and overgrazing in some periods; (2) After the Ming Dynasty, the population of this area gradually increased and began to cultivate slope land; (3) the implementation of “ ”(4) In the 350 years from the Qing Dynasty to the 90s of last century, because of the rapid population growth, extensive reclamation of steep slopes was the period of accelerated soil erosion