五道峡自然保护区锐齿槲栎群落物种组成与群落特征研究  

Species Composition and Community Characteristics of Quercus aliena var.acutiserrata in Wudaoxia Nature Reserve

作　　者：刘苗苗 邓正斌 李怀祥 任帅 祝文龙 汪正祥[1,2] LIU Miaomiao;DENG Zhengbin;LI Huaixiang;REN Shuai;ZHU Wenlong;WANG Zhengxiang(College of Resources and Environment,Hubei University,Wuhan 430062,China;Hubei Provincial Key Laboratory of Regional Development and Environmental Response,Wuhan 430062,China;Wudaoxia National Nature Reserve Administration,Baokang,Hubei 441600,China)

机构地区：[1]湖北大学资源环境学院,湖北武汉430062 [2]区域开发与环境响应湖北省重点实验室,湖北武汉430062 [3]五道峡国家级自然保护区管理局,湖北保康441600

出　　处：《林业调查规划》2023年第3期53-58,213,共7页Forest Inventory and Planning

基　　金：湖北省中央引导地方科技发展专项(2019ZYYD050);五道峡动植物样方样线调查与规划专项(214002001004).

摘　　要：锐齿槲栎是广泛分布于我国暖温带和亚热带山地中海拔地段的主要优势种,以五道峡国家级自然保护区内的锐齿槲栎群落为研究对象,通过种群年龄结构及数量动态变化,生活型谱及生长模型方面的研究,分析五道峡国家级自然保护区锐齿槲栎群落特征。结果表明,锐齿槲栎龄级结构中,个体数量在Ⅲ~Ⅵ龄级占比最大,种群中低龄个体数量充足;种群数量动态指数显示锐齿槲栎种群呈现增长趋势,但种群稳定性差且抗干扰能力较弱;生活型谱分析发现,占比最高的属于高位芽植物,且呈随海拔升高占比逐渐降低的趋势,植物生活型谱大致呈现“L”型;生长模型的研究表明,三次函数模型的决定系数R 2达到最大值,且经过T检验,表明三次函数模型可以很好地用来拟合锐齿槲栎胸径—树高的关系。建议在原地保护的基础上进行科学的管理,并充分调动群众的积极性,为种群营造稳定的生存环境,促进种群的长期发展。Quercus aliena var.acutiserrata is a major dominant species widely distributed in mid altitude areas of warm temperate and subtropical mountains in China.This paper selected the Quercus aliena var.acutiserrata community in Wudaoxia National Nature Reserve as the research object to preliminary analyze the characteristics of community by the study of population age structure and quantity dynamics,life form spectra,and growth models.The results showed that in the age-class structure of Quercus aliena var.acu-tiserrata,the proportion of individual numbers in the III-VI age class was the highest,and the number of young individuals in the population was sufficient;The population dynamic index showed that the population of Quercus aliena var.acutiserrata presented an increasing trend,but the population stability was poor and the anti-interference ability was weak;The life form spectrum analysis found that the highest proportion belonged to high bud plants,and the ratio showed a gradual decrease with the increase in altitude,and the plant life form spectrum roughly showed an“L”shape;The study of the growth model showed that the coefficient of determination R 2 of the cubic function model reached the maximum value,and the T test showed that the cubic function model could be used to fit the relationship between the DBH and the height of Quercus aliena var.acutiserrata.This paper recommended to conduct scientific management on the basis of in situ conservation and fully mobilize the enthusiasm of the masses to create a stable living environment for the population and promote the long-term development of the population.

关 键 词：锐齿槲栎 五道峡自然保护区 龄级结构 数量动态 生活型谱 生长模型 

分 类 号：S759.9[农业科学—森林经理学] S992.18[农业科学—林学] S718.542