Study on Ecological Suitability Regionalization of Three Species of Cistanches Herba in Gansu Province

CHEN Bo1, ZHU Tiantian1, CHENG Xi1, CAO Houkang1, XU Xiaoqiong1,2, JIN Ling1,3

1. School of Pharmacy, Gansu University of Chinese Medicine, Lanzhou 730000, China; 2. Gansu Medical College, Pingliang 744000, China; 3. Institute of Chinese (Tibetan) Medicine Resources, Lanzhou 730000, China Abstract: Objective The ecological suitability of three species of Cistanches Herba in Gansu Province was evaluated; To provide basis for selecting planting areas of Cistanches Herba and rationally utilizing high-quality Cistanches Herba resources. Methods Through consulting network data and on-the-spot collection, this study collected

197 sample points of Cistanches Herba in Gansu Province, including 87 sample points of Cistanche deserticola, 50 sample points of C. sinensis G. Beck, 60 sample points of C. salsa (C. A. Mey.) G. Beck. Combining 55 ecological factors, the geographic information system and the maximum entropy model were used to analyze the ecological suitability of Cistanches Herba in Gansu Province. Results The main environmental factors affecting the ecological suitability of three species of Cistanches Herba in Gansu Province were altitude, vegetation type, soil subtypes, rainfall and temperature; the most suitable habitats of Cistanches Herba in Gansu Province were mainly concentrated in Hexi area and Baiyin city, Gansu Province. However, different species had different distribution areas and spatial patterns in different areas, so different types of Cistanches Herba should be distinguished when they were artificially planted. Conclusion The results of this study are consistent with the current production areas of Cistanches Herba in Gansu Province, which can provide a basis for the rational selection of high-quality planting areas of Cistanches Herba.

Keywords: Cistanche deserticola; Cistanche sinensis G. Beck; Cistanche salsa G. Beck; ecological suitability