| 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 fi ssa 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。 |
| 关键词: 荔枝林 林分改造 疏伐 生长 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技创新专项资金项目（2008KJCX008-01、2009KJCX011-01、2010KJCX013-01） |
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| Effects of Different Thinning Treatments on the Growth of Tree Species for Stand Conversion in Litchi Forests |
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HU Qiuyan,MO Luojian,CHEN Hongyue,YE Yongchang,LIN Yan
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1.Forest Research Institute of Dongguan,Dongguan;2.College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou
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| Abstract: |
| To explore the growth differences of tree species under different thinning treatments, four
diff erent thinning treatments, including full cutting, retraction, pruning, and retention, were used, and 9 native
broad-leaf tree species such as Castanopsis fi ssa 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
diff erences 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 diff erent under diff erent
thinning treatments and diff erent interplanting methods. Among them, the pruning interplanting treatment had the
most obvious eff ect 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 benefi cial 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. |
| Key words: Litchi plantation sand conversion thinning treatments growth |
