| 遥感调查中耕地利用系数的确定 |
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| 引用本文： | 虞献平.遥感调查中耕地利用系数的确定[J].国土资源遥感,1989,0(2):47-51. |
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| 作者姓名： | 虞献平 |
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| 作者单位： | 中国林业科学研究院浆信息研究所 |
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| 摘 要： | 查清耕地的准确面积是土地利用现状调查和土地详查的最主要任务之一。用常规方法进行现 地大量,工作量极其浩大,需投入很多的财力、人力。 本文介绍了一种行之有效的利用航空遥感方法来量算耕地面积的新方法,即通过建立航空像 片上量测线形地物的回归方程来修正用量测放大镜在航空像片上对各块耕地出露的直按量测值, 从而求得准确的耕地面积。 此方法可满足大比例尺土地详查精度要求,能大量节省调查经费,极大地提高调查效率,并 且对每块耕地面积都可在室内进行检查复核。
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| 关 键 词： | 遥感调查 耕地利用系数 农业遥感 土地利用调查 |
A NEW METHOD TO MEASURE AND CALCULATE FARMLAND AREA BY AERIAL REMOTE SENSING TECHNIQUE |
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| Institution: | The Research Institute of Resource Information, The Chinese Academy of Forestry |
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| Abstract: | The inventory of accurate area of farmland is one of the major tasks for land use investigation and detailed land investigation. The normal method is in situ measurement, and the work amount is enormous, with huge employment of manpower and high cost. This paper introduces a new effective method to measure and calculate farmland area by using aerial remote sensing technique. The method establishes regression equation of linear objects on air photos to revise the values that are directly measured on air photos for various patches of farmland with a surveying magnifier, and thus accurate farmland areas could be obtained. This method can. satisfy the demand for accuracy of detailed land invertigation with large scale air photos, save large amount of cost, and greatly elavate survey efficiency. The method allow indoor checking and revison for each patch of farmland. |
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