经营干扰对毛竹林土壤肥力及胸径分布的影响

Effect of Management on Fertility and DBH Distribution of Phyllostachys heterocycla cv. Pubescens

以安吉不同经营模式的毛竹林为研究对象,分析经营干扰对毛竹林土壤肥力及毛竹胸径分布的影响。结果表明,笋竹两用林,经营程度高,产出量高,经营合理的竹林,肥力指数保持较高水平;材用林亦同,合理经营保持土壤肥力指数高。竹林胸径与土壤肥力指数相关性不显著,而与竹林经营有关,无论是材用林还是笋用林,在高强度的人工经营干扰下,只要保持合理的经营方式,均可以保持竹林土壤肥力的较高水平,且经过长期经营,笋用林与材用林毛竹胸径形成不同分布,笋用林比材用林整齐度高。

Sample plots were selected at Phyllostachys heterocycla cv. pubescens stands with different management in Anji, Zhejiang province. The result indicated that both shoot use and culm use stands had higher output with intensive management, and integrated fertility index（IFI） could be kept high if the stands with rational management. DBH of the stands had no evident relation with IFI, but evident with management. DBH distribution of shoot use stands was evener than that of culm use one.