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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (33): 96-103.doi: 10.11924/j.issn.1000-6850.casb2025-0363

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Potential Geographical Distribution of Pomacea canaliculata in Nanjing Under Current and Future Climate Scenarios Based on Maximum Entropy Model

LI Daming1(), LIU Yanshan1, ZHONG Liqiang1, WANG Chaoqun1, WANG Qing2, DAI Pei1, YU Yawen1   

  1. 1 Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210017
    2 Nanjing Institute of Fisheries Sciences, Nanjing 210036
  • Received:2025-04-30 Revised:2025-09-24 Online:2025-11-25 Published:2025-12-01

Abstract:

In order to understand the potential suitable area for Pomacea canaliculata in Nanjing and its influencing factors, this study utilized the Maximum Entropy (MaxEnt) model and ArcGIS software to predict the potential geographical distribution of P. canaliculata in Nanjing under current and future climate scenarios based on its existing distribution samples and environmental variables. The MaxEnt model demonstrated high predictive accuracy, with an AUC value of 0.868±0.031. The factor contribution rate and knife cutting method test both suggested that population density, precipitation of the driest month, annual mean temperature, and mean diurnal temperature range were key environmental factors determing its potential geographic distribution of P. canaliculata, the total contribution rates of four environmental variables was 86.0%. Under current climatic conditions, the potential suitable area for P. canaliculata in Nanjing was 3071.4 km2, mainly located along both banks of the Yangtze River and its southern regions. In future climate scenario (three periods: 2041-2060, 2061-2081 and 2081-2100, three shared socioeconomic pathway: SSP126, SSP245 and SSP585), the potential geographical distribution of P. canaliculata in Nanjing will expand, and the highly suitable area also will significantly increase. Therefore, measures must be taken to strengthen the management and prevention of P. canaliculata. The research results can provide scientific references for monitoring, early warning, and management strategies of P. canaliculata in Nanjing.

Key words: Pomacea canaliculata, MaxEnt model, biological invasion, potential suitable area, Nanjing