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本文旨在总结普查内布拉斯加中枢灌溉系统长期规划的始末、步骤和结果。对中枢灌溉点的位置数据收集始于1972年,每年编制成图总结出版。普查步骤很简单,包括解译放大的陆地卫星影像图。辨认、绘制其有循环特征的枢轴系统图。1972年总共记录了2665个中枢灌溉系统,1986年累积达26208个,十四年之内几乎增加了十倍,不难推测,增长最多的年份与该州所遇的干旱情况相一致。尽管这一灌溉工程的遥测方法很普通,我们仍认为,内布拉斯加中枢灌溉系统的普查方法仍不失为遥感在实际中运用的一个优秀例子。
This article aims to summarize the origins, steps and results of the long-term planning of the Central Nebraska irrigation system in the census. The collection of data on the location of the central irrigation site began in 1972 and is compiled annually as a chart summary publication. The census step is simple, including the interpretation of enlarged images of terrestrial satellite images. Identify, draw its pivot features of the circulatory system diagram. A total of 2,665 central irrigation systems were recorded in 1972, up 26,208 in 1986 and almost tenfold in fourteen years, making it not difficult to speculate that the year with the most growth is consistent with the drought encountered in the state. Although this telemetry method of irrigation works is common, we still believe that the census method of the Nebraska central irrigation system remains a good example of the practical application of remote sensing.