| 摘要: |
| 根据现有土地评价数据库,在分析土地潜力同土地各因素关系的基础上,建立了与其关系的综合模型,研究了利用土壤信息系统评价土地潜力。从得到的土地潜力图同野外调查土地潜力图的对比来看,利用这种模型进行的计算机土地评价制图的总趋势同野外土地评价结果相似,但在极端条件下有一定差别。这种差别主要是由土地因素同土地潜力级别的关系的非线性或抛物线型所决定的。土地评价结果同野外土地评价结果有很好的相关性(R~2=0.80),评价的平均差为半个级别。 |
| 关键词: 土地信息系统 土地评价数据库 土地评价 土地潜力 |
| DOI： |
| 投稿时间：1992-10-27 |
| 基金项目: |
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| Automated Land Evaluation from the Soil Information System in Scotland |
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| Abstract: |
| The relationships between land capability classes(for Agriculture)(LCA)and land compo- nents were studied and a model of land capability classes were built with several important land compo- nents,such as annual rainfall,growth season length(days).yearly soil moisture deficiency,soil drainage condition,soil pH.organic matter content(%)and slope,Computer aided land evaluation map was gotten by the emerging of the model and soil information system.By compareing the conventional LCA map with computer aided LCA... |
| Key words: soil information system soil database land evaluation land capability |
