摘要
为了了解乡土树种华榛的生长特性和营养元素相关情况,本文对湘西青坪生态站乡土树种华榛开展了研究,了解其树高、胸径、材积以及矿质元素含量与相关性等情况。结果表明:华榛树高连年生长量最大值出现在第10年,达0.93 m;胸径连年生长量最大值出现在第15年,达到0.84 cm;华榛材积连年生长量最大值出现在第20年,达0.006 m^(3),材积在30 a内仍处于较高的生长水平,未进入数量成熟阶段。通过对华榛各部位矿质元素进行测定与分析可知,P元素与K元素、P元素与Mg元素、K元素与Mn元素、Mg元素与Cu元素之间具有显著相关性(P﹤0.05),P元素与Mn元素、P元素与Cu元素、Mg元素与Mn元素、Mn元素与Cu元素之间极显著相关(P﹤0.01)。
In order to obtain more growth characteristics and mineral element characteristics and correlation of native tree species,based on the study of the forest growth and mineral elements of Corylus chinensis in Qingping Ecological Station of Western Hunan,the growth characteristics of the tree height,DBH,the volume and the correlation characteristics of mineral elements were investigated.The results showed that the maximum annual growth of tree height appeared in the 10th year,which was 0.93 m.The maximum annual growth of DBH appeared in the 15th year,which reached 0.84cm.The maximum annual growth of Corylus chinensis volume of 0.006m^(3) was obtained at 20th year.The volume growth at 30 years had been at a high growth level,and hadn t entered the quantitative maturity stage.Through the determination and analysis of the mineral elements in various parts of Corylus chinensis,the results showed that the elements between P and K,P and Mg,K and Mn,Mg and Cu had significant correlation(P<0.05),the elements between P and Mn,P and Cu,Mg and Mn,Mn and Cu had extremely significant correlation(P<0.01).
作者
葛文贵
李志辉
GE Wengui;LI Zhihui(Hunan Agricultural Forestry and Industry Survey and Design Research Institute,Changsha 410007,Hunan,China;Central South University of Forestry and Technology,Changsha 410004,Hunan,China)
出处
《湖南林业科技》
2021年第3期15-18,28,共5页
Hunan Forestry Science & Technology
关键词
华榛
乡土树种
生长特性
矿质元素
Corylus chinensis
native tree species
growth characteristics
mineral elements
