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在水土保持项目监测中 ,经常需要对各种地类面积进行勾图测量 ,通常采用的方法是用量算纸勾绘图斑量面积 ,这种方法的缺点是效率低、误差大。笔者在工作实践中应用称重法量算各种地类面积 ,有效地提高了量算效率和准确性。1 方法与原理称重法是采用质地均匀的纸张 (或其他图斑
In the monitoring of soil and water conservation projects, it is often necessary to measure the area size of various types of land. The commonly used method is to calculate the amount of paper spot area of the paper hook. The disadvantage of this method is inefficiency and large error. In practice, the author uses the weighing method to measure various types of land area, effectively improving the measurement efficiency and accuracy. 1 Methods and Principles Weighing method is the use of uniform texture of paper (or other spots