摘要
为系统了解湖北省竹山县百里河流域野生楠木资源的分布情况、种群结构和群落特征,通过对楠木资源密集分布的地段竹山县官渡镇百里河村和中场村进行野外实地调研,记录其生境条件和群落特征。调查区内发现野生楠木类植物4种,共计211株。其中楠属植物3种,分别为竹叶楠(Phoebe faberi)、白楠(P.neurantha)、桢楠(P.zhennan);润楠属植物1种,为宜昌润楠(Machilus ichangensis)。野生楠木较多生长在山地湿润的阴坡,坡度为20°~40°、海拔在588~925 m之间的生境条件下。从地理分布特征来看,科属分布最多的地理区系为热带亚洲(印度-马来西亚)和泛热带分布。楠木类植物群落的维管束植物共有39种,隶属于21科37属,以樟科植物居多。调查区内润楠属植物数量多于楠属植物。润楠属植物种群年龄结构大体呈现出稳定型,楠属类植物呈现出衰退型。
To systematically understand the distribution,population structure and community characteristics of wild Phoebe and Machilus resources in Zhushan County,Hubei Province,the sample method was used to conduct field surveys on the concentrated areas of wild Phoebe and Machilus resources in Bailihe Village and Zhongchang Village in Guandu Town,Zhushan County,and their habitat conditions and community characteristics were recorded.The results show that four species of wild Phoebe plants are found in the investigation area,with a total of 211 plants.Among them,there are 3 species of Phoebe genus,namely Phoebe faberi,Phoebe neurantha,and Phoebe zhennan;one species of Machilus is Machilus ichangensis.Wild Phoebe and Machilus resources grow more on the moist and shady slopes of the mountain,with a slope of 20~40°and an altitude of 588~925 m.From the perspective of geographic distribution characteristics,the geographic regions with the most families and genera are tropical Asia(India-Malaysia)and pan-tropical distribution.There are 39 species of vascular plants in the Phoebe community,belonging to 21 families and 37 genera,most of which are Lauraceae.There are more Machilus species than Phoebe species in the survey area.The population age structure of Machilus is generally stable,while Phoebe are declining.
作者
费永俊
李英杰
周本庚
苏光菊
刘春玲
兰先杰
胡蝶
FEI Yongjun;LI Yingjie;ZHOU Bengeng;SU Guangju;LIU Chunling;LAN Xianjie;HU Die(College of Horticulture and Gardening,Yangtze University,Jingzhou 434025,Hubei;Shuangzhu Forest Farm in Zhuxi County of Hubei Province,Zhuxi 442300,Hubei;Forestry Station in Baifusi Town of Laifeng County of Hubei Province,Laifeng 445703,Hubei)
出处
《长江大学学报（自然科学版）》
2023年第2期121-129,共9页
Journal of Yangtze University(Natural Science Edition)
基金
湖北省教育厅科学研究计划资助项目“湖北润楠属植物的抗寒性评价及耐冷候选基因的发掘”(Q20181314)
湖北省教育厅科学研究计划资助项目“miRNA调控浙江楠多胚发生机制研究”(Q20191309)
湖北省科技支撑计划项目“湖北珍贵树种楠木种质资源收集评价与高效栽培研究”(2013BBB24)。
关键词
楠木
种群结构
群落特征
竹山县
Phoebe and Machilus
population structure
community characteristics
Zhushan County
