基于中药材产地适宜性分析地理信息系统(TCM—GIS)平台,获得了采样区域11个生态因子值.应用偏最小二乘回归法(PLS)分析了石斛中的化学成分及其与生态因子的相关性.结果表明:同种石斛不同产地的化学成分含量差异显著.土壤类型与铁皮石斛中多糖含量呈极显著正相关;年降水量与金钗石斛中石斛碱积累呈极显著正相关;温度是影响鼓槌石斛中毛兰素含量的主要因素.主成分分析表明,浙江是铁皮石斛的最佳产地,贵州是金钗石斛的最佳产地,而云南是鼓槌石斛的最佳产地.
A total of eleven ecological factors values were obtained from the ecological suitability database of the geographic information system for traditional Chinese medicines production areas (TCM-GIS) , and the relationships between the chemical components of Dendrobium and the eco- logical factors were analyzed by partial least square (PLS) regression. There existed significant differences in the chemical components contents of the same species of Dertdrobium in different are- as. The polysaccharides content of D. officinale had significant positive correlation with soil type, the accumulated dendrobine in D. nobile was significantly positively correlated with annual precipi- tation, and the erianin content of D. chrysotoxum was mainly affected by air temperature. The prin- cipal component analysis (PCA) showed that Zhejiang Province was the optimal production area for D. officirtale, Guizhou Province was the most appropriate planting area for O. nobile, and Yunnan Province was the best production area of D. chrysotoxum.