摘要
幼苗是树木生命周期中最关键的阶段,其质量对造林和绿化具有直接的影响,为达到苗木定向经营目的,实现苗木效益最大化,以同质园内8个不同种源刨花楠(Machilus pauhoi)苗木为对象,通过测定其苗期形态、生理等13个指标,采用主成分分析方法(principal component analysis, PCA)和聚类分析法(clustering analysis, CA)对其质量进行综合比较,确定影响其质量的主要因子及其定向经营的优良种源。结果表明:(1)3个主成分分别反映了苗木的色彩、用材和冠形。(2)各种源质量高低依次为:安福>茶陵>仁化>永新>遂川>建德>建瓯>延平。(3)影响刨花楠苗木景观功能的主导因子是叶绿素a、叶绿素b含量以及冠幅;影响其用材的主导因子为苗高、地径。综上所述,认为茶陵种源较适合培育绿化苗,遂川种源较适合培育用材林或工业原料林,而安福种源适宜大范围种植。
Seedling is the most essential stage in a life cycle of trees, and the quality of seedling has a direct impact on afforestation and greening. In order to achieve the directional management and maximize the benefits of seedlings, eight different Machilus pauhoi seedlings from different provenances collected in common garden were used to evaluate the seedling quality through determining 13 indicators such as their morphology and physiology at the seedling stage, using principal component analysis （PCA） and cluster analysis （CA） to compare their quality, and determining main factors affecting the quality and the superior provenance for directional management. The results showed： （1） the three principal components reflected the color, timber and crown-shaped of the seedlings, respectively; （2） the order of provenance quality was Anfu〉Chaling〉Renhua〉Yongxin〉Suichuan〉Jiande〉Jianou〉Yanping; （3） the main influencing factors affecting the landscape function of Machilus pauhoi seedlings were chla, chlb content and canopy width, and the dominant factors affecting the timber were seedling height and ground diameter. In conclusion, Chaling provenance, Suichuan provenance and Anfu provenance are suitable for cultivating green seedlings, cultivation of timber or industrial raw material forest, and a wide range of plantation, correspondingly.
作者
陈嘉静
钟全林
程栋梁
张中瑞
余华
李静
CHEN Jiajing1,2, ZHONG Quanlin1,2, CHENG Dongliang1,2, ZHANG Zhongrui1,2, YU Hua1,2, LI Jing1,2(1. Fujian Provincial Key Laboratory for Plant Eco-physiology, Fujian Normal University, Fuzhou 350007; 2. Institute of Geography, Fujian Normal University, Fuzhou 35000)
出处
《安徽农业大学学报》
CAS
CSCD
2018年第4期638-644,共7页
Journal of Anhui Agricultural University
基金
国家自然科学基金项目(31170596
31170374
31370589)
国家重点研发计划(2017YFC0505400)
福建省种业创新和产业化工程项目(2014S1477-4)
福建省科技厅重大项目(2014N5008)共同资助
关键词
刨花楠种源
主成分分析
苗期性状
定向经营
质量评价
Machilus pauhoi provenances
principal component analysis
seedling traits
directional management
quality evaluation
