耕地质量监测渐变分布范围确定方法研究

发布时间：2019-06-20 20:42

【摘要】：开展耕地质量监测,对全面掌握耕地质量动态变化,实现耕地数量质量并重管理具有重要意义,而如何合理确定耕地质量监测渐变分布范围是当前土地工作者的一个难点。文章以扶绥县为例,将时序比较法引入耕地质量监测渐变分布范围的确定,通过对一定时间段的耕地质量分等因素变化进行对比分析,找出引起耕地质量等别渐变的主导因素分布范围作为监测渐变分布范围,并与组合类型法比较,分析两种方法优劣,以期为优化监测渐变分布范围确定提供参考。研究结果表明:将时序比较法引入监测渐变分布范围确定,得到了精度较高的监测渐变分布范围。该方法较组合类型法在监测渐变分布范围确定上采用了Kriging插值技术,提高了确定监测渐变分布范围的精度,工作效率较高,具有一定的先进性,但该方法对数据源要求较高,需有一定时段的数据源;组合类型法应用范围广,不受数据源限制,但在确定监测分布范围上有一定的模糊性,需进行大量的实地核实工作才能最终确定分布范围,增加了人为工作量。因此,在实际工作过程中,可综合两种方法的优缺点,根据实际情况选择合适的监测分布范围确定方法。
[Abstract]:It is of great significance to carry out cultivated land quality monitoring in order to master the dynamic change of cultivated land quality in an all-round way and realize the equal management of cultivated land quantity and quality. How to reasonably determine the distribution range of cultivated land quality monitoring and gradual change is a difficult point for land workers at present. Taking Fusui County as an example, this paper introduces the time series comparison method into the determination of the gradual distribution range of cultivated land quality monitoring, and through the comparative analysis of the changes of cultivated land quality classification factors in a certain period of time, finds out the distribution range of the dominant factors causing the cultivated land quality gradual change as the monitoring gradual change distribution range, and compares with the combination type method, analyzes the advantages and disadvantages of the two methods, in order to provide a reference for optimizing the monitoring of the gradual change distribution range. The results show that the time series comparison method is introduced into the monitoring gradient distribution range to determine the monitoring gradient distribution range, and the monitoring gradient distribution range with high accuracy is obtained. Compared with the combined type method, this method adopts Kriging interpolation technique to determine the distribution range of gradual change, which improves the accuracy of determining the distribution range of gradual change, has high working efficiency and has certain advanced nature, but this method has higher requirements for data source and needs a certain period of data source. The combined type method has a wide range of applications and is not limited by data sources, but there is a certain fuzziness in determining the distribution range of monitoring. A large number of field verification work is needed to determine the distribution range and increase the human workload. Therefore, in the actual work process, the advantages and disadvantages of the two methods can be synthesized, and the appropriate monitoring distribution range determination method can be selected according to the actual situation.
【作者单位】：广西壮族自治区国土测绘院;
【基金】：广西壮族自治区国土资源厅“广西耕地质量等级成果补充完善项目”(GXKIJ20133073-E)
【分类号】：S159.2

【参考文献】