清代西南地区耕地空间格局网格化重建

来源 :地理科学进展 | 被引量 : 34次 | 上传用户:honcy456852
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本文以现代耕地分布格局为基础,通过量化地形(海拔、坡度)、气候生产潜力(光照、温度、水分)和人口密度等因子与耕地空间分布的关系,重建了清代西南地区6个时点分辨率为10 km×10 km的耕地数据。结果表明:①就整体而言,清代西南地区耕地空间格局的变化表现在两个方面:一是垦殖范围的扩张,1661-1911年土地垦殖率在0~10%的网格占比减少了约24%,主要分布在四川盆地和云贵高原;二是垦殖强度的提高,1661-1911年垦殖率大于30%的网格占比提高了10.3%,最为显著的是四川盆地和云南中东部地区
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