四川黑竹沟国家级自然保护区珙桐和光叶珙桐种群特征及生境适宜性评价  

Population Characteristics and Habitat Suitability Evaluation of Davidia involucrate in Heizhugou Nature Reserve, Sichuan

作　　者：马晓龙 程勇 代世红 周勇军 叶信初 杨彪[4] MA Xiaolong(Sichuan Heizhugou National Nature Reserve Administration,Ebian 614300)

机构地区：[1]四川黑竹沟国家级自然保护区管理局,峨边614300 [2]荥经县大相岭自然保护区管理局,四川荥经625200 [3]成都市雷雀生态环保科技有限公司,四川成都610042 [4]西南野生动植物资源保护教育部重点实验室,四川南充637002

出　　处：《林业科技》2019年第5期37-41,共5页Forestry Science & Technology

摘　　要：综合运用常规种群调查法和最大熵模型法,对四川黑竹沟国家级自然保护区的珙桐、光叶珙桐种群结构与适宜生境的研究结果表明:保护区内的珙桐、光叶珙桐种群处于初衰型和衰退状态,种群生存空间狭窄。珙桐种群的适宜、次适宜生境面积分别为39.54 km^2和158.75 km^2,主要影响因子为海拔、植被类型和坡度;光叶珙桐种群适宜、次适宜生境面积分别为48.07 km^2和176.26 km^2,主要影响因子为海拔和植被类型。Using the conventional population survey method and the maximum entropy model method,the results of the study on the population structure and suitable habitat of Davidia involucrate and D.Involucrate var.vilmoriniana in Heizhugou National Nature Reserve showed that the populations of Davidia involucrate and D.Involucrate var.vilmoriniana in the protected area were in the early-type and In the recession state,the population has a narrow living space.The suitable and sub-optimal habitat areas of Davidia involucrate population were 39.54 km^2 and 158.75 km^2,respectively.The main influencing factors were elevation,vegetation type and slope.The suitable and sub-suitable habitat areas of D.Involucrate var.vilmoriniana population were 48.07 km^2 and 176.26 km^2,respectively.The main influencing factors were altitude and vegetation type.

关 键 词：珙桐 光叶珙桐 最大熵模型 种群特征 生境适宜性评价 

分 类 号：S685.99[农业科学—观赏园艺] S718.542[农业科学—园艺学]