Study on Ecological Regionalization of Shandong Pseudostellaria heterophylla (Miq.) Pax ex Pax et Hoffm.Based on Ecological Factors

Bian Lihua; Kang Chuanzhi; Xu Zixin; Zhou Jie; Wang Xiao

doi:10.14083/j.issn.1001-4942.2018.02.014

Abstract：This study was aimed to conduct the ecological regionalization and quality evaluation of Shandong Pseudostellaria heterophylla (Miq.) Pax ex Pax et Hoffm.The monthly mean values of climatic dominant and limiting factors were spatially interpolated by Surfer 7.0.The model of spatial distribution of Pseudostellaria heterophylla based on genuine components was established by ArcGIS 8.1.In the end,we completed the geographical distribution model and ecological adaptable regionalization of Pseudostellaria heterophylla using the ArcGIS mapping output function.The results showed that the polysaccharide significantly positively correlated with Radix Pseudostellariae cyclic peptide A,air temperature mean in January and September,and monthly mean of temperature difference between day and night (P ＜ 0.05),but significantly negatively correlated with habitat suitability(P ＜ 0.01)and altitude (P ＜ 0.05).The Radix Pseudostellariae cyclic peptidc A significantly positively correlated with annual temeperature variation range and monthly mean temperature difference between day and night(P ＜0.01),but significantly negatively correlated with habitat suitability and average rainfall of December (P ＜ 0.01).The Radix Pseudostellariae cyclic peptide B content was positively correlated with average rainfallin in April (P ＜ 0.01) and average temperature of November (P ＜ 0.05),but negatively correlated with altitude (P ＜ 0.05).Based on these results,the optimal habitat of Pseudostellaria heterophylla was cleared,and the most suitable planting areas were mainly in the eastern part of Muping District of Yantai City,the eastern Wendeng,Rongcheng and Rushan of Weihai City,the southeast of Qingdao City,the southwest of Jinan City,the northern Taian and the Mengyin and Linshu of Linyi City.