高密度杉木二代林不同间伐强度效果分析

——以商品用材林为例

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中图分类号：S718.5 文献标识码：A 文章编号：1001-9499（2025）04-0046-05

Analysis of the Effect of Different Thinning Intensities on High-density Chinese Fir Second-generation Forests -Taking commercial timber forests as an example

CHEN Shuanglin’ QIAN Hongxia²HUANG Lianggen³ （1.Anhui Province Xiuning County Xikou Town Forestry Station，Anhui Xiuning 2454OO； 2.Anhui Province Xiuning County Qiyunshan Town Forestry Station，Anhui Xiuning 2454OO； 3.Anhui Province Xiuning County Banqiao Town Forestry Station，Anhui Xiuning 245400）

AbstractThis paper Originating from artificial planting of seedling of seedlings+coppice shoot 1lyear old second-generation Chinese fir forest Adopt separately post harvest canopy closure Not less than 0.701（A handle）not less than 0.601（B handle）、not lessthan 0.501（C handle）3 methods to control thinning intensity and Control area （D handle），Observe after thinning Reserve densityand Forest density after 3 years of thinning The relationship between reasonable density ofChinese fir in Anhui Province（Hereinafter referred to as reas onable density）as wellas 3years after thinning restoration and growth of canopy density、breast height diameter、tree height、and stand volume.The results indicate that： a handle density after thinning and density after 3 years of thinning exceeding the reasonable density limit by 17.7% and 30.3% respectively; The post harvest density of both treatment Band treatment C is within areasonable density range，But after 3 years of processing the density ofB exceeds the reasonable upper limit of den sity by 12.3%.C processing is still withinareasonabledensityrange.The breast height diameter、tree heightand stand volume growth of all thinning treatments werehigher than thosoin the controlarea，Among themCranks first in handling three idicators，And theabilityof post harvest forest stands to resist natural disasters is no diferent from other treatments.Onthe basis of this research，Proposed under diferent socio economic conditions，The most efficient and practical thinning intensity for second-generation Cunninghamia lanceolata plantations，In order toprovide reference for forestryregulatoryauthorities and forestryoperators.

Key wordsChina fir; second-generationforest; thinning intensity; density

杉木（Cunninghamia lanceolata）[1-2]是我国南方最重要的人工栽培树种，具有生长快、材质好、用途广、产量高等诸多优点。（剩余5148字）