摘要
以滇重楼、滇黄精、三七、天麻和石斛5种云南林下中药材为研究对象,采用MaxEnt模型,基于云南省森林资源规划设计调查数据,探究林分条件对中药材林下分布的影响机制,模拟中药材林下适宜区的空间分布特征。结果表明:结合林分条件的5种中药材模型精度较高,中药材的AUC值、真实技巧训练值和连续博伊斯指数平均值分别提升了5.22%、13.26%和3.44%。滇重楼、滇黄精、三七、天麻和石斛的主导气候因子分别为季节性降水变异系数、最湿月降水量、昼夜温差月均值、季节性温度变化和最干季均温,主导林分因子均为立地类型。加入林分条件后,最佳适生区面积有所减小,但高适生分布区变化不大;三七和天麻分布表现出显著的区域性,三七集中在滇东南区域,天麻集中在滇东北区域;滇重楼、滇黄精和石斛适生范围相对较广,滇重楼高适生区主要集中在滇西、滇南地区,滇黄精高适生区域主要集中在滇南、滇东南地区,石斛主要集中在滇西、滇南地区。
This study focuses on 5 understory medicinal plants in Yunnan Province:Paris polyphylla var.yunnanensis,Polygonatum kingianum,Panax notoginseng,Gastrodia elata,and Dendrobium nobile.Using the MaxEnt model and based on forest management inventory data from Yunnan Province,we investigate the mech-anisms by which stand conditions influence the distribution of medicinal plants in forest understory areas and sim-ulate the spatial distribution of suitable habitats for these plants.Results indicated that intergrating forest stand variables significantly improved model accuracy for these species,with average increases in AUC,the true skill statistic,and the continuous Boyce index by 5.22%,13.26%,and 3.44%,respectively.The primary climate factors affecting the distribution of P.polyphylla,P.kingianum,P.notoginseng,G.elata,and D.nobile were seasonal precipitation variability,precipitation of wettest month,mean diurnal range,temperature seasonality,mean tem-perature of driest quarter,respectively,with site type as the dominant forest stand factor.While the total area of suitable habitats decreased after incorporating forest stand variables,the distribution of highly suitable areas re-mained consistent.P.notoginseng and G.elata exhibited strong regional specificity,with P.notoginseng concen-trated in southeastern Yunnan and G.elata in northeastern Yunnan.P.polyphylla,P.kingianum,and D.nobile demonstrated relatively broader suitable ranges,with high-suitability areas for P.polyphylla primarily in western and southern Yunnan,P.kingianum mainly in southern and southeastern Yunnan,and D.nobile predominantly in western and southern Yunnan.
作者
冯子航
吴勇
于志博
刘志
张晓丽
李林霞
欧光龙
Feng Zihang;Wu Yong;Yu Zhibo;Liu Zhi;Zhang Xiaoli;Li Linxia;Ou Guanglong(College of Forestry,Southwest Forestry University,Kunming Yunnan 650233,China;Key Laboratory of Ministry of Education on Southwest Mountain Forest Resources Conservation and Utilization,Southwest Forestry University,Kunming Yunnan 650233,China)
出处
《西南林业大学学报(自然科学)》
北大核心
2025年第6期165-172,共8页
Journal of Southwest Forestry University:Natural Sciences
基金
云南省科技厅科技计划重点研发项目(202403AC100039)资助
云南省“兴滇英才支持计划”教育人才项目(XDYC-JYRC-2023-0083)资助。
关键词
中药材
林分条件
MaxEnt模型
滇重楼
滇黄精
三七
天麻
石斛
medicinal herb
forest stand condition
MaxEnt model
Paris polyphylla var.yunnanensis
Poly-gonatum kingianum
Panax notoginseng
Gastrodia elata
Dendrobium nobile
