1980西安坐标系向CGCS2000转换后地块面积变形分析——以梅州市为例

Analysis of the Deformation of the Block Area after the Transformation from 1980 Xi'an Coordinate System to CGCS2000——Taking MeiZhou City as an Example

本文梳理了梅州市1980西安坐标系向CGCS2000转换过程,分析了转换后影响地块面积变化的主要因素,推导了综合面积变化公式;以覆盖全梅州市1 km2格网为基础结合面积变化公式,计算了全梅州市的综合面积变化量;最后总结了转换后梅州市面积变化的空间分布情况和变形规律。为CGCS2000启用后梅州市自然资源管理工作中遇到的新旧地块面积变化提供了处理方法。

This paper combs the conversion process of the 1980 Xi'an coordinate system to CGCS2000 coordinate system in Meizhou,analyzes the main factors affecting the area change of the plot after the conversion,and derives the comprehensive area change formula;combined with the area change formula based on the grid covering the entire Meizhou city.The comprehensive area change of Meizhou City is calculated,finally the spatial distribution and deformation law of Meizhou area change n after transformation are summarized.It provides a treatment method for the changes in the area of new and old plots encountered in the natural resource management of Meizhou after the CGCS2000 is launched.