JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (5): 197-203.doi: 10.12302/j.issn.1000-2006.202212010

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Effects of extreme climate on the distribution and potential habitat of Hyphantria cunea in China

XUE Mingyu1(), HAO Dejun1,*(), ZHAO Xudong1, GENG Yishu1, HU Tianyi1, XIE Chunxia2   

  1. 1. Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China
    2. Jiangsu Academy of Forestry, Nanjing 211153, China
  • Received:2022-12-25 Revised:2023-04-27 Online:2024-09-30 Published:2024-10-03
  • Contact: HAO Dejun E-mail:xdfxxmy@126.com;dejunhao@163.com

Abstract:

【Objective】This study aims to predict the potential habitat of Hyphantria cunea under extreme climate conditions in China. 【Method】The occurrence data of H. cunea were obtained. Contemporary and future bioclimatic variables and extreme climate index data were processed using ArcGIS and DIVA-GIS. Environmental variables with low correlation coefficients and high contribution rates were selected. These variables were input into MaxEnt to calculate the potential habitats of H. cunea for the contemporary period, 2021 to 2040, 2041 to 2060, and 2061 to 2080. The spatial changes in the habitats were expressed by the relative positions of the centroids of the habitats. 【Result】The maximum daily precipitation, warm spell duration index, percentage of nights when the minimum temperature is below the 10th percentile, and mean temperature of the wettest quarter were important variables affecting the distribution of H. cunea. The potential habitat of H. cunea was currently mainly distributed in eastern, northern, and northeastern China, as well as the middle and lower reaches of the Yangtze River. In the future, H. cunea might spread to southwest China, reaching Sichuan and Chongqing, with scattered distributions in Guangdong and Guangxi. 【Conclusion】The extreme precipitation is an important factor affecting the distribution of H. cunea. H. cunea is adapted to areas with stable climates. Predictions based on the extreme climate index indicate a risk that H. cunea will spread to southwest China in the future.

Key words: Hyphantria cunea, MaxEnt, potential habitat, extreme climate, spatial distribution, climate scenarios

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