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首页> 外文期刊>Pedosphere: A Quarterly Journal of Soil Science >GIS-Based Assessment of Land Suitability for Optimal Allocation in the Qinling Mountains, China
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GIS-Based Assessment of Land Suitability for Optimal Allocation in the Qinling Mountains, China

机译：基于GIS的秦岭土地最优配置适宜性评价。

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摘要

A GIS-based method was used to assess land suitability in the Qinling Mountains, Shaanxi Province of China through simultaneous consideration of physical features and current land use. Through interpretation of Landsat TM images and extensive field visits the area was modeled into 40 land types in five altitudinal zones (valleys and gullies, hillsides and terraces, foothills, mid-mountain, and sub-alpine mountain). Then, a suitability score was assigned to five physical factors (climate, hydrology, topography, soil, and vegetation). Next, their integrated overall suitability value scores were compared with the observed land cover to determine whether it should be reallocated a new use. Results showed that the five suitability classes of agriculture, forest, grassland, farmland-woodland, and scrub-pasture had altitudinal stratification and a total of 1151 km~2 (8.89%) of lands on the northern slopes of the Qinling Mountains had to be reallocated. To achieve this reallocation, 657 km~2 of arable land should be reduced, and forest, grassland and scrub-pasture increased by 615 km~2, 131 km~2 and 405 km~2, respectively. Implementation of these recommended land reallocations should help achieve suitable use of land resources and prevent land degradation.
机译：通过同时考虑物理特征和当前土地利用，使用基于GIS的方法评估中国陕西秦岭的土地适宜性。通过对Landsat TM图像的解释和广泛的实地考察，将该地区建模为五个海拔区域（山谷和沟壑，山坡和阶地，山麓，中山和亚高山山脉）的40种土地类型。然后，将适用性得分分配给五个物理因素（气候，水文，地形，土壤和植被）。接下来，将他们的综合总体适用性得分与观察到的土地覆盖率进行比较，以确定是否应重新分配其新用途。结果表明，秦岭北坡农业，森林，草地，农田林地和灌丛草场的五个适宜等级具有垂直分层，需耕种1151 km〜2（8.89％）的土地。重新分配。要实现这一重新分配，应减少657 km〜2的耕地，森林，草地和灌木丛分别增加615 km〜2、131 km〜2和405 km〜2。实施这些建议的土地重新分配应有助于实现土地资源的合理利用并防止土地退化。

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