南京林业大学学报（自然科学版）2025，Vol.49Issue(4)：29-36,8.DOI:10.12302/j.issn.1000-2006.202410034
带状采伐毛竹林分特征动态研究
The dynamic characteristics of moso bamboo(Phyllostachys edulis)stands after strip-shaped clear-cutting
摘要
Abstract
[Objective]This study aimed to examine the dynamic characteristics of moso bamboo(Phyllostachys edulis)stands subjected to strip-shaped clear-cutting and to provide insights into the development of appropriate scientific management strategies for moso bamboo forests.[Method]A strip-shaped clear-cutting experiment was conducted in pure moso bamboo stands within the Forest Farm of Yixing,Jiangsu Province.The size of strip-shaped clear-cutting plots(SC)is 20 m×8 m for each.In addition,three reserved plots(RB)of the same dimensions were positioned on both sides of the clear-cutting plots.For comparison,three 20 m ×20 m control plots(CK)were set up under traditional management practices.The study investigated the dynamics of moso bamboo shoot development,the growth of new bamboo,and changes in soil nutrient content across the different treatment plots over five years following the strip-shaped clear-cutting.Pearson correlation analysis was applied to assess the relationship between soil nutrient factors and stand characteristics.[Result](1)In the first year following clear-cutting,the number of bamboo shoots in the SC plots increased by 71.17％compared with RB and by 62.21％compared to CK,while the number of new bamboo grew by 38.97％in SC relative to RB and 55.07％relative to CK.(2)In the first year,the mean diameter at breast height(DBH),mean height to crown base(CBH),and mean height(H)of new bamboo in SC were significantly lower than those in CK(P＜0.05).By the fifth year after clear-cutting,the DBH,CBH,and H of new bamboo in SC surpassed those in CK,with a significant increase in CBH(P＜0.05).(3)Strip-shaped clear-cutting significantly reduced the total soil nutrient content in SC plots(P＜0.05),while enhancing the content of quick-acting nutrients in both SC and RB plots;however,these differences were not statistically significant.The soil organic carbon content in SC was lower than in CK and RB,although the difference was not significant.By the fifth year after clear-cutting,there was no significant difference in soil nutrient content between SC and RB when compared to CK.(4)Correlation analysis revealed a highly significant negative relationship between the number of shoots in SC and the soil's alkaline nitrogen(AN)and quick-acting potassium(AP)content(P＜0.01).Similary,the number of new bamboo exhibited significant negative correlations with both soil AN and AP content(P＜0.05).Conversely,the quality characteristics of the new bamboo were significantly positively correlated with soil total potassium content(P＜0.05).[Conclusion]Strip-shaped clear-cutting enhances bamboo shoot density and the formation of new bamboo in moso bamboo forests but negatively impacts the quality of new bamboo.It leads to a reduction in total soil nutrient levels and an increase in quick-acting nutrients.As the bamboo stands recover,the quality of the new bamboo gradually improves,and soil fertility is restored.By the fifth year after clear-cutting,the stand characteristics of the moso bamboo forest in the SC plots return to levels similar to those in the CK plots.关键词
毛竹林/带状采伐/林分特征/土壤养分Key words
Phyllostachys edulis forests/strip-shaped clear-cutting/stand characteristics/soil nutrient分类
农业科技引用本文复制引用
张璇,官凤英,范少辉,郑亚雄,周潇..带状采伐毛竹林分特征动态研究[J].南京林业大学学报（自然科学版）,2025,49(4):29-36,8.基金项目
国家重点研发计划(2023YFD2201203). （2023YFD2201203）
