基于格网技术的重庆市中药资源种类丰富度差异性分析

Analysis on difference of richness of traditional Chinese medicine resources in Chongqing based on grid technology

在全国和各地中药资源普查工作结束后,将汇总大量的中药资源种类和分布等方面的数据信息,区域之间中药资源丰富度是客观反映中药资源禀赋的一个有效指标。由于县域面积大小存在较大差异,以县为统计单元进行区域间中药资源丰富度评估,会导致区域间丰富度统计结果的偏差。基于规则栅格或格网的统计方法,可以降低由于统计单元大小不同,引起的中药资源丰富度的差异性。以重庆为例,基于现有调查数据信息,对比分析不同格网尺度条件下中药资源丰富度差异性,结果显示,选取30 km的格网,统计重庆市中药资源丰富度,可以较好的反映区域间中药资源丰富度的客观实际情况。

After the end of the national and local medicine resources census work,a large number of Chinese medicine resources and distribution of data will be summarized. The species richness between the regions is a valid indicator for objective reflection of inter-regional resources of Chinese medicine. Due to the large difference in the size of the county area,the assessment of the intercropping of the resources of the traditional Chinese medicine by the county as a statistical unit will lead to the deviation of the regional abundance statistics. Based on the rule grid or grid statistical methods,the size of the statistical unit due to different can be reduced,the differences in the richness of traditional Chinese medicine resources are caused. Taking Chongqing as an example,based on the existing survey data,the difference of richness of traditional Chinese medicine resources under different grid scalewere compared and analyzed. The results showed that the 30 km grid could be selected and the richness of Chinese medicine resources in Chongqing could reflect the objective situation of intercropping resources richness in traditional Chinese medicine better.