破布木生态适宜区预测及主导环境因子的分析  

Prediction of Ecological Suitable Area and Analysis of Dominant Environmental Factors of Cordia dichotoma

作　　者：丘建煌 谢春平 QIU Jian-huang;XIE Chun-ping(College of Science,Qiongtai Normal University,Haikou 571127,China;Binhai Agricultural College,Guangdong Ocean University,Zhanjiang 524088,China)

机构地区：[1]琼台师范学院理学院,海南海口571127 [2]广东海洋大学滨海农业学院,广东湛江524088

出　　处：《中药材》2023年第11期2698-2702,共5页Journal of Chinese Medicinal Materials

基　　金：国家自然科学基金项目(32360417)。

摘　　要：目的:利用现有的分布数据预测破布木在中国境内的适生区,分析影响其生长的主导环境因子,为破布木野生种质资源保护以及引种栽培选址提供参考依据。方法:基于野外实地调查、文献数据库和标本数据库中获取的130个破布木野生分布点数据,应用相关系数(Pearson)从19个生物气候参数中筛选出影响破布木分布的8个限制因素,并使用MaxEnt模型预测破布木在我国的潜在分布区。结果:最干季度平均温度、最冷月份最低温度、最湿季度降雨量、年均气温等4个环境因子是影响破布木分布的主要因子。破布木适宜分布区域主要位于低海拔的热带亚热带地区,其预测的潜在分布区域大于目前已知区域。结论:温度是影响破布木分布的决定性因素,该结果对于破布木扩大种植面积和解决引种过程中的技术难题具有指导意义,也为今后根据破布木生态适应特点制定其野生种质资源的保护措施提供了数据支撑。Objective:To predict the suitable areas of Cordia dichotoma in China by using the existing distribution data,and analyze the dominant environmental factors affecting its growth,so as to provide reference for the protection of wild Cordia dichotoma germplasm resources and the location of introduction and cultivation.Methods:Based on the data of 130 wild distribution points of Cordia dichotoma obtained from field investigation,literature database and specimen database,8 limiting factors affecting Cordia dichotoma distribution were selected from 19 bioclimatic parameters by Pearson.The MaxEnt model was used to predict the potential distribution area of Cordia dichotoma in China.Results:The average temperature in the driest quarter,the lowest temperature in the coldest month,the rainfall in the wettest quarter and the average annual temperature were the main factors affecting the distribution of Cordia dichotoma.The suitable distribution area of Cordia dichotoma was mainly located in low-altitude tropical and subtropical areas,and the predicted potential distribution area was larger than the known area at present.Conclusion:Temperature is the decisive factor affecting the distribution of Cordia dichotoma.The results have guiding significance for expanding the planting area and solving the technical problems in the introduction process,and also provide data support for the future protection measures of Cordia dichotoma germplasm resources tased on ecological adaptation characteristics.

关 键 词：破布木 环境因素 MaxEnt模型 适宜分布区 

分 类 号：R282.71[医药卫生—中药学]