摘要
通过对3种不同经营方式下毛竹林林分空间结构的比较研究表明，集约型毛竹林的混交度都在零度混交级上，复合型的平均混交度为0．378，粗放型的平均混交度为0．270；各样地毛竹的平均大小比数为0．368～0．554，其中，纯林中的毛竹处于绝对劣势和劣势的比例相对较高，而复合型的毛竹明显处于优势和亚优势的比例比较高；各样地的角尺度图基本上呈正态分布，但都有右偏斜的趋势，其平均值在0．533～0．553，均属于集聚分布格局，但复合型竹林接近均匀分布。从3个空间结构指标研究可以得出，复合型毛竹林经营较毛竹纯林更利于可持续经营和森林的生态保护。
Comparative study on spatial structure of Phyllostachys heterocycla var. pubescens stand with three different managements in Long,you, Zhejiang province showed that the mingling of the stand under intensive management was null, while the average mingling under mixed management and extensive management were 0.378 and 0.270. The average neighborhood comparison of each plot was from 0.368 to 0.554. The ratio of Ph. heterocycla var. pubescens in absolute disadvantage and disadvantage was higher in pure stand, the ratio of that in advantage was higher in mixed managed than others. The neighborhood pattern of each Plot showed normal distribution, and had right oblique trend with the average neighborhood pattern of 0.533 to 0.553, aggregated distribution. But mixed managed stand was close to uniform distribution. Study indicated that mixed managed Ph. heterocycla var. pubescens stand had advantage in sustainable management and ecological protection.
出处
《浙江林业科技》
北大核心
2008年第3期48-51,共4页
Journal of Zhejiang Forestry Science and Technology
基金
浙江省科技厅重大项目"五千万亩生态(经济)公益林建设关键技术研究和集成示范"(2005C12106)
关键词
毛竹
空间结构
角尺度
混交度
Phyllostachys heterocycla vat. pubescens
spatial structure
neighborhood pattern
neighborhood comparison
mingling
