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Habitat Suitability Evaluation of Polygala tenuifolia Based on MaxEnt Model and ArcGIS / 中国实验方剂学杂志
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 122-129, 2021.
Article in Chinese | WPRIM | ID: wpr-905841
ABSTRACT

Objective:

Polygalae Radix is mainly produced in Northeast,North,Northwest and Central China and Sichuan province. There are obvious differences in quality of <italic>Polygala tenuifolia</italic> from different areas. <italic>P. tenuifolia</italic> cultivation areas are relatively concentrated. Currently,there are only a few studies about the suitability zoning of <italic>P. tenuifolia</italic> nationwide,in order to determine the suitable zoning of <italic>P. tenuifolia</italic> in China. This paper made a habitat suitability evaluation of <italic>P. tenuifolia</italic> nationwide based on analysis of ecological factors in distribution areas of sampling points.

Method:

MaxEnt model was used to select ecological factors that affected the distribution of <italic>P. tenuifolia</italic> and construct an evaluation model. ArcGIS software was used to evaluate the suitability of different habitats of<italic> P. tenuifolia</italic>. The suitable areas were classified into high,medium,low suitability areas and unsuitable area of <italic>P. tenuifolia</italic> nationwide.

Result:

The evaluation model was highly accurate,and concluded that <italic>P. tenuifolia'</italic>s suitability distribution area in China was 3.21×10<sup>6</sup> km<sup>2</sup>,including 0.52×10<sup>6</sup> km<sup>2</sup> of high suitability area,0.96×10<sup>6</sup> km<sup>2</sup> of medium suitability area and 1.73×10<sup>6</sup> km<sup>2</sup> of low suitability area. High suitability areas were mainly distributed in Shanxi province,Hebei province,Shandong province,Shaanxi province,Liaoning province and Henan province. The main ecological factors affecting the distribution of <italic>P. tenuifolia</italic> were annual average temperature change range,mean temperature of driest quarter,precipitation of wettest quarter,altitude,slope and topsoil (0-30 cm) calcium carbonate.

Conclusion:

The results of the study are consistent with the records in relevant literatures,and can provide a theoretical basis for protection and cultivation of Chinese medicine resource <italic>P. tenuifolia</italic>.

Full text: Available Index: WPRIM (Western Pacific) Type of study: Prognostic study Language: Chinese Journal: Chinese Journal of Experimental Traditional Medical Formulae Year: 2021 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Type of study: Prognostic study Language: Chinese Journal: Chinese Journal of Experimental Traditional Medical Formulae Year: 2021 Type: Article