田坎系数测算的新技术方法研究

Research on new technology method of calculating fieldridge coefficient

田坎系数科学准确的测算,关系到第三次全国国土调查中耕地面积的准确统计,分析数据表明,田坎系数测算可使用高分辨率正射影像测算,且参与田坎系数计算的应是剔除异常值后的大多数样方,文中研究提出了简洁有效的田坎测量技术和田坎系数汇总方法,满足正在开展的第三次国土调查需要。

The scientific and accurate calculation of the fieldridge coefficient was related to the accurate statistics of the cultivated land area in the third national land survey. Analysis of data showed that the fieldridge coefficient could be calculated by the high-resolution orthophotos, and the calculation of the fieldridge coefficient should be used. Samples removed the outliers might be participate the calculation of the fieldridge coefficient. In the paper, a simple and effective method for the measurement of the fieldridge coefficient and the method of the fieldridge coefficient was proposed meeting the needs of the third national survey being carried out.