摘要
调查分析了武夷山不同毛竹林类型的毛竹生长效果和土壤养分状况。结果表明,毛竹混交林对培肥土壤、增加有机质、控制病虫害以及维护毛竹林分长期的生产力具有效果。竹杉林、竹阔林的林分密度较毛竹纯林明显增大,分别增长48.9%、54.3%,毛竹+杉木的混交方式对促进毛竹生长效果为最好,其林分立竹量、平均胸径、新竹产量最大,而毛竹+阔叶树的林分由于乔木所占比重稍大,影响了毛竹行鞭发笋和胸径生长,但其毛竹生物量最高,比毛竹纯林增加了20%。竹阔林土壤的有机质含量高于竹杉林、毛竹纯林,全N含量也相应增大,但磷素明显缺乏。
The bamboo growth soil nutrient contents of different Phyllostachys heterocycla forests in Wuyi Mountain were studied.Result shows that Phyllostachys heterocycla mixed forest is beneficial to enhancing soil fertility,increasing organic matter,controlling pests and maintaining long-term productivity of bamboo.The stand density of mixed forest of Phyllostachys heterocycla and Cunninghamia laceolata,mixed forest of Phyllostachys heterocycla broadleaf tree which are denser than that of Phyllostachys heterocycla pure forest increase by 48.9%,54.3% respectively.Mixed forest of Phyllostachys heterocycla and Cunninghamia laceolata which have the optimal growth effect for Phyllostachys heterocycla have the highest stand density,average DBH and new culm yield.The number and diameter of bamboo shoot is affected as the proportion of hardwood in the Phyllostachys heterocycla and broadleaf tree mixed forest;the bamboo biomass which is the highest is increased by 20% than that of the Phyllostachys heterocycla pure forest.The soil organic matter of bamboo and broadleaved mixed forest are higher than that of bamboo and Cunninghamia lanceolata mixed forest bamboo pure forest;total N content became greater,but phosphorus supply is evidently lack.
出处
《防护林科技》
2010年第5期38-40,共3页
Protection Forest Science and Technology
关键词
毛竹
竹林类型
林分结构
生物量
土壤养分
Phyllostachys heterocycla
bamboo forest type
stand structure
biomass
soil nutrient content
