| 基于〝3S〞技术的县级土地利用现状更新调查 |
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| 作者姓名： | 韩春建 吴克宁 冯新伟 吕巧灵 付巧玲 |
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| 作者单位： | 河南农业大学 郑州450002(韩春建,冯新伟,吕巧灵),中国地质大学 北京100083(吴克宁),河南省地质调查院 郑州450007(付巧玲) |
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| 摘 要： | 为保持县级土地利用数据的现势性,基于“3S”技术研究了土地利用现状更新的方法。首先对遥感影像数据进行预处理和计算机自动分类,将自动分类结果、土地利用现状图和DOM叠加,利用人机交互解译的方法提取变化信息;然后,在GPS引导下进行实地调绘,将调绘结果录入土地利用数据库,并运用GIS空间分析方法更新土地利用现状。经过研究,利用“3S”技术更新县级土地利用现状数据是可行的。还对其中部分关键问题进行了讨论,并得出结论,整个数据更新是个系统工程,要通力配合,尤其注意外业调查与影像处理精度和解译精度。
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| 关 键 词： | 土地利用现状 更新调查 数据库 |
The Updating Investigation of Land use Information at County Level Based on "3S" Technology |
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| Authors: | Han Chunjian Wu Kening Feng Xinwei Lv Qiaoling Fu Qiaoling |
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| Institution: | 1.Henan Agricultural University, Zhengzhou 450002; 2.The Geology College of China Geo-science University, Beijing 100083; 3.Henan Institute of Geological Survey Zhengzhou 450007 |
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| Abstract: | To keep land use information, the method of land use changing based"3S"technology was discussed in the paper. First, the remote sensing image was dealt with and classified. Then the land use map was overlapped on DOM and classified image to find the changed information. The information change was investigated on the spot, then it was imported to GIS and the land use information was updated finally. Using "3S"technology to update land use is possible. The key questions were discussed and the conclusion was drawn as: land use updating is a systemic project, surveying and precision of image and estimation is important. |
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| Keywords: | GIS RS GPS |
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