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Chinese Journal of Applied Ecology ›› 2021, Vol. 32 ›› Issue (7): 2525-2533.doi: 10.13287/j.1001-9332.202107.013

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Climatic ecological suitability and potential distribution of Tricholoma matsutake in western Sichuan Plateau, China based on MaxEnt model

WANG Qing-li1, WANG Ru-lin2, ZHANG Li-ping3, HAN Yu-jiang1, WANG Ming-tian4,5*, CHEN Hui6, CHEN Juan1, GUO Bin7   

  1. 1Ganzi Meteorological Bureau, Kangding 626000, Sichuan, China;
    2Sichuan Provincial Rural Economic Information Center, Chengdu 610072, China;
    3Dazhou Meteorological Bureau, Dazhou 635000, Sichuan, China;
    4Sichuan Meteorological Observatory, Chengdu 610072, China;
    5Sichuan Key Laboratory of Water-Saving Agriculture Research in Southern Hilly Areas, Chengdu 610066, China;
    6Maerkang Meteorological Bureau, Maerkang 624000, Sichuan, China;
    7Meteorological Bureau of Aba, Maerkang 624000, Sichuan, China
  • Received:2020-11-05 Revised:2021-04-06 Online:2021-07-15 Published:2022-01-15
  • Contact: *wangmt0514@163.com
  • Supported by:
    Technological Development of Meteorological Administration/ Heavy Rain and Drought-Flood Disasters in Plateau and Basin (Key Labo-ratory of Sichuan Province-2018-Key-05-05, SCQXKJQN2020016).

Abstract: Based on the distribution data of Tricholoma matsutake obtained from field investigation and literature, the ecological-niche factor analysis (ENFA) and the maximum entropy model (MaxEnt) were used to simulate the distribution law and suitable area of T. matsutake in the western Sichuan Plateau. The prediction was made for the future changes in the suitable area of T. matsutake by analyzing the relationship between climate factors and dynamic distribution. The results showed that the area under curve (AUC) values of both the model training set and validation set were greater than 0.90, indicating that the model prediction results were extremely accurate. The environmental variables affecting the potential distribution of T. matsutake were mainly the lowest temperature in the coldest month, the coldest season precipitation, annual temperature difference and soil type, with accumulative contribution of 90.3%. The niche parameters of suitable distribution areas of T. matsutake were as follows: the lowest temperature in the coldest month was -18.5--5.4 ℃, the coldest season precipitation was less than 15.7 mm, the annual temperature difference was 39.5-45 ℃, and soil type was semi-leached soil, including dry red soil, cinnamon soil, gray cinnamon soil, black soil and grey forest soil. The suitable areas of T. matsutake were distributed in the southwest, south, central and east of the plateau at an altitude range of 1900-3600 m. The highly suita-ble areas were mainly distributed in some towns of Yajiang, Xiangcheng, Kangding, Jiulong, Daocheng, Litang, Batang, Danba, Maerkang, Xiaojin, Jinchuan, Lixian, Maoxian, etc. The moderately and lowly suitable areas were located in some towns of Derong, Daofu, Xinlong, Luhuo, Baiyu, Luding, Rangtang, Wenchuan, Heishui, Jiuzhaigou. The highly suitable areas were discontinuously distributed according to the direction of rivers and mountains. The moderately suitable areas were connected with the highly suitable areas, while the lowly suitable areas were the extension of the highly and moderately suitable areas. Future climate change would be beneficial to the growth of T. matsutake on the western Sichuan Plateau, while the climate-suitable areas would show an overall increasing trend. Suitable areas in the low-altitude Minjiang River Basin would be more affected by climate change than those located in high-altitude areas.

Key words: Tricholoma matsutake, climatic niche, suitable area