摘要
农用土地分等定级是衡量农用土地质量优劣的必要手段 ,是实行农用土地保护的基本依据 ,是我国土地管理部门即将开展的一项工作。农用土地定级工作需要一项易普及、简便、能节省人力物力、高效率高精度的方法 ,这就为航空遥感技术的运用提供了一个新的工作领域。本文探讨了航空遥感技术在农用土地定级单元划分及定级因素提取中的应用 ,其中自然因素通过建立分级指标与影像特征之间的一一对应关系 ,可以直接从航空像片中提取定级因素的级别 ;经济区位因素选择了与土地经济效果密切相关的。
The agricultural land grade and evaluation is a necessary means to evaluate the quality of agricultural land, is the foundation to protect agricultural land, and is an urgent task for land management. Agricultural land grade and evaluation need a simple, effective method so as to save investment and manpower. The use of aviation remote sensing is suitable for this. Based on analyzing the present research situation of abroad and domestic agricultural land grade and using the experimental experience of other areas, this article discussed the application of aviation remote sensing to the plotting of grade unit and acquirement of grade factors. The grade of natural factors can be gotten from the aviation photo through establishing the relationship between the factors and the image characteristic on aviation photos. The information of economy-location factors can be gotten from the aviation photos through selecting the quantitative factors relating to the economic result of land.
出处
《地理科学进展》
CSCD
北大核心
2002年第2期189-194,共6页
Progress in Geography
基金
国土资源部重点科技项目 ( 2 0 0 0 2 0 9)