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Scientia Silvae Sinicae ›› 2022, Vol. 58 ›› Issue (7): 43-50.doi: 10.11707/j.1001-7488.20220705

• Research papers • Previous Articles     Next Articles

Potential Suitable Areas of Crataegus pinnatifida in China based on MaxEnt Modeling

Dongsheng Wang,Wei Zhao,Beibei Cheng,Jijun Zhang   

  1. College of Horticulture Science and Technology, Hebei Normal University of Science and Technology Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization Qinhuangdao 066004
  • Received:2022-03-03 Online:2022-07-25 Published:2022-11-03

Abstract:

Objective: This study was designed to comprehensively analyze the relationship between Hawthorn distribution and environmental factors, and to provide a theoretical basis for the protection and utilization of Hawthorn resources. Method: Based on the data of 192 geographical distribution points and 20 environmental variables downloaded from Worldclim from 1970 to 2000, the potential suitable growth area of Hawthorn in 2020 was predicted using the MaxEnt model, and the suitability grades was classified. At the same time, the key environmental factors affecting the distribution were analyzed. Result: The analysis showed that the prediction of MaxEnt is accurate, and the AUC values of both test data set and training data set are more than 0.9. Nine environmental factors such as precipitation of warmest quarter (28.6% contribution), temperature seasonality standard deviation (27.2%), mean temperature of driest quarter (13%), maximum temperature of warmest month (11.8%), annual precipitation (10%), altitude (7.7%), mean diurnal range (1.2%), precipitation seasonality coefficient of variation(0.4%)and isothermality(0.2%) are the key environmental factors that affect the distribution of Hawthorn. The total suitable area of Hawthorn in China has reached 2 487 002 km2, which is mainly distributed in North, Northeast and East China. The top 10 provinces account for 82.38% of the total suitable area. Shandong, Hebei, Liaoning, Henan, and Shanxi Provinces have the largest area, with a total of 481 519 km2, accounting for 82.56% of all highly suitable areas. Jiangsu, Shaanxi, Beijing, Tianjin, Heilongjiang, Jilin, and Inner Mongolia have great potential for development. Conclusion: The suitable growing area of Hawthorn is highly concentrated, and the suitability decreases gradually from the Bohai Rim to the inland provinces, among which Shandong, Hebei, Liaoning, Henan, and Shanxi are the core areas suitable for Hawthorn cultivation.

Key words: Crataegus pinnatifida, potential suitable areas, MaxEnt, environment variables

CLC Number: