摘要
为了明确贵州省灵芝的生态适生区、关键生态因子及适宜种植范围,基于灵芝在该省的19个采样点信息与95个生态因子,利用最大熵模型(Maximum entropy model,MaxEnt)对其进行了生态位模拟,并通过刀切法、生态因子贡献率和响应曲线对其关键生态因子及适宜种植范围进行了分析。结果表明,灵芝的高适生区主要位于贵州北部、东北部和中至南部地区,集中在惠水县、龙里县、平塘县、贵定县、余庆县、绥阳县、都匀市、紫云县和湄潭县等地;混交林占比(Lcov4)、平均气温日较差(Bio2)、2月份降水量(Prec2)、灌木林占比(Lcov5)、10月份太阳辐射值(Srad10)、常绿阔叶林占比(Lcov2)、常绿/落叶针叶林占比(Lcov1)和9月份降水量(Prec9)为影响灵芝在贵州适生分布的关键生态因子;植被因子累积贡献率(48.17%)>降水因子(21.36%)>温度因子(15.36%)>太阳辐射因子(13.70%)>地形因子(1.41%)。基于以上结果,建议在贵州的北部、东北部和中至南部地区对灵芝进行重点生态种植;种植过程中应优先考虑植被因子,其次分别是降水、温度、太阳辐射、地形因子;Lcov4、Bio2、Prec2、Lcov5、Srad10、Lcov2、Lcov1、Prec9应分别控制在30%~55%(最适40%)、5~8℃(最适7℃)、20~60 mm(最适30 mm)、10%~30%(最适15%)、9000~12000 kJ(/m^(2)·d)[最适10000 kJ(/m^(2)·d)]、2%~20%(最适2%)、1%~15%(最适2%)、100~140 mm(最适120 mm)。
To clarify the potential ecological suitable areas of Ganoderma lucidum in Guizhou Province,the key ecological factors and their suitable planting ranges,ecological niche modeling was conducted for G.lucidum using maximum entropy model(MaxEnt)based on the information of 19 sampling points of G.lucidum in Guizhou Province and 95 ecological factors.The key ecological factors and their suitable planting ranges were analyzed using jackknife method,contribution rates of factors and response curves.The results showed that the high suitable areas of G.lucidum in Guizhou Province were mainly located in the northern,northeastern and central to southern regions of Guizhou Province,and concentrated in Huishui County,Longli County,Pingtang County,Guiding County,Yuqing County,Suiyang County,Duyun City,Ziyun County and Meitan County,etc.Percentage of mixed/other trees(Lcov4),mean diurnal temperature range(Bio2),precipitation of February(Prec2),percentage of shrubs(Lcov5),solar radiation value of October(Srad10),percentage of evergreen broadleaf trees(Lcov2),percentage of evergreen/deciduous needleleaf trees(Lcov1)and precipitation of September(Prec9)were the key ecological factors affecting the potential suitable distribution of G.lucidum in Guizhou Province.Cumulative contribution rate of vegetation factors(48.17%)>precipitation factors(21.36%)>temperature factors(15.36%)>solar radiation factors(13.70%)>topography factors(1.41%).Based on the above results,it is suggested that G.lucidum should be planted in the northern,northeastern and central to southern regions of Guizhou Province.Vegetation factors should be given priority in the planting process,followed by precipitation,temperature,solar radiation and topography factors.The range of Lcov4,Bio2,Prec2,Lcov5,Srad10,Lcov2,Lcov1,Prec9 should be controlled within 30%—55%(optimally 40%),5—8℃(optimally7℃),20—60 mm(optimally 30 mm),10%—30%(optimally 15%),9000—12000 kJ(/m^(2)·d)[optimally 10000 kJ(/m^(2)·d)],2%—20%(optimally 2%),1%—15%(optimally 2%),100—140 mm(optimally 120 mm),respectively.
作者
王志威
胡优琼
黄安玲
WANG Zhiwei;HU Youqiong;HUANG Anling(College of Pharmacy/Germplasm Resources Development and Cultivation Technology Research Center of Guizhou Genuine Medicinal Materials Ganoderma lucidum,Guizhou University of Traditional Chinese Medicine,Guiyang 550002,China)
出处
《河南农业科学》
北大核心
2022年第10期61-73,共13页
Journal of Henan Agricultural Sciences
基金
贵州省普通本科高等学校服务农村产业革命战略行动计划项目(黔教合KY字[2018]089)
国家自然科学基金地区科学基金项目(31760053)。
关键词
灵芝
生态适生区
生态因子
最大熵模型
贵州省
Ganoderma lucidum
Ecological suitable areas
Ecological factor
Maximum entropy model
Guizhou Province
