摘要
为了解不同疏伐处理下的荔枝林Litchi chinensis林分改造树种生长差异,采用全砍、回缩、修剪、保留4种不同疏伐处理,并套种黧蒴Castanopsis fissa等9个乡土阔叶树种,对撂荒荔枝林进行林分改造,分析改造后树种的生长及植物多样性表现,对改造6年后树种生长差异进行分析。结果表明:不同疏伐处理以及不同套种方式下改造树种的平均树高、冠幅生长量和胸径生长量均存在差异。其中,修剪套种处理对林分、荔枝个体和套种树种的生长量促进作用最为明显,回缩套种处理次之,全砍套种和回缩套种处理生长量较低。对植物多样性进行分析,发现4种改造类型均不同程度地提高了灌木层和草本层植物多样性,说明适当的回缩或修剪有利于草本和灌木的迁入和定居。总体来看,修剪套种和回缩套种方式有最利于改造树种的生长以及植物丰富度的增加。
To explore the growth differences of tree species under different thinning treatments,four different thinning treatments,including full cutting,retraction,pruning,and retention,were used,and 9 native broad-leaf tree species such as Castanopsis fissa were interplanted to transform the abandoned Litchi forest.The growth performance and plant diversity of the tree species after transformation was analyzed and the growth differences of the tree species after 6 years of transformation were analyzed.The results showed that the average tree height,crown width growth,and DBH growth of Litchi forest and tree species were different under different thinning treatments and different interplanting methods.Among them,the pruning interplanting treatment had the most obvious effect on the growth of individual stands,litchi forest,and interplanting species,followed by the retracting and interplanting treatment,and the full cutting and retracted interplanting treatments had lower growth.The analysis of plant diversity showed that the four types of transformation increased the plant diversity of the shrub layer and herb layer to varying degrees,indicating that appropriate retraction or pruning was beneficial to the immigration and settlement of herbs and shrubs.Overall,pruning and retracting interplanting methods are most conducive to the growth of transformed tree species and the increase in plant richness.
作者
胡秋艳
莫罗坚
陈红跃
叶永昌
林艳
HU Qiuyan;MO Luojian;CHEN Hongyue;YE Yongchang;LIN Yan(Dongguan Institute of Forestry Science/Forest Ecosystem Research Station in City Cluster of the Pearl River Estuary,Dongguan,Guangdong 523106,China;College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou,Guangdong 510642,China;Forestry Affairs Center of Dongguan,Dongguan,Guangdong 523003,China)
出处
《林业与环境科学》
2023年第4期81-86,共6页
Forestry and Environmental Science
基金
广东省林业科技创新专项资金项目(2008KJCX008-01、2009KJCX011-01、2010KJCX013-01)。
关键词
荔枝林
林分改造
疏伐
生长
Litchi plantation
sand conversion
thinning treatments
growth
