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目的:通过对头花蓼中没食子酸与地形因子之间的相关性研究,进行贵州省头花蓼种植的地形适宜性等级划分,为贵州省头花蓼种植最佳区域的选取提供科学依据。方法:在对贵州14个县野生头花蓼资源调查的基础上,应用统计分析方法,全面分析了头花蓼中没食子酸含量地理变异,不同地形条件下没食子酸含量变异,坡度、坡位、坡向、海拔高度等地形因子对没食子酸含量的影响。并应用空间信息技术,依据头花蓼中没食子酸与地形因子之间的关系,进行了基于地形因子的头花蓼生态适宜性等级划分。结果与结论:坡度、坡向、海拔高度对头花蓼中没食子酸含量影响较大。贵州省海拔较低、阴坡、坡度较小的地区,头花蓼中没食子酸含量较高。贵州东部地区头花蓼中没食子酸含量较高,西部地区相对较低。贵州省中东部地区的地形条件最适宜头花蓼中没食子酸含量积累。
OBJECTIVE: To study the correlation between gallic acid and topographical factors in Polygonum capitatum so as to provide a scientific basis for selecting the optimal region for Polygonum capitatum planting in Guizhou Province. Methods: Based on the investigation on the resources of Polygonum capitatum in 14 counties in Guizhou Province, the statistical analysis was used to analyze the geographical variations of gallic acid content in Polygonum capitatum. The changes of gallic acid content, slope, Slope, elevation and other topographical factors on the content of gallic acid. Based on the relationship between gallic acid and topographical factors in Polygonum capitatum, the ecological suitability classification of Polygonum capitata was carried out based on topographical factors. RESULTS AND CONCLUSION: The effects of slope, aspect and altitude on the content of gallic acid in Polygonum capitatum are more significant. Guizhou Province, the lower elevation, shady slopes, slopes smaller areas, Capsicum talus gallic acid content is higher. The content of gallic acid in Polygonum capitatum in eastern Guizhou is relatively high, while the western region is relatively low. The topographical conditions in the eastern and eastern parts of Guizhou Province are most suitable for the accumulation of gallic acid in Polygonum capitatum.