竹子混交林对林木生长及林分土壤的影响研究

研究了多竹种混交、竹桉混交和竹橡胶混交对林木生长及林分土壤条件的影响。结果显示:不同竹种混交以及竹树混交其林木生长状况及土壤条件均优于纯林;竹子纯林、多竹种混交林、竹树混交林3种不同类型的林分其土壤含水量和有机质含量排序为:多竹种混交林 > 竹子纯林 > 竹树混交林 > 乔木纯林。研究结果表明,在桉树林和橡胶林中适当套种竹子可以改善桉树林和橡胶林的生长环境,增强生态系统的稳定性,对于维护生态平衡、提高林地生产力、维持土壤肥力具有显著作用。研究结果可为桉树和橡胶树纯林的改造提供理论支持。

A Study of the Effect of Mixed Bamboo Forest on Forest Tree Growth and Stand Soil

This paper studied the effect of mixed forest of various bamboo species, mixed bamboo-eucalyptus forest and mixed bamboo-rubber forest, on the growth of forest tree and stand soil condition. The results showed that the forest trees in mixed forest of various bamboo species and mixed bamboo-arbor forest grow better than those in pure forest with better soil condition; the moisture content and organic matter content in the soil of pure bamboo forest, mixed forest of various bamboo species and mixed bamboo-arbor forest could be ordered as mixed forest of various bamboo species > pure bamboo forest > mixed bamboo-arbor forest > pure arbor forest. The research showed that the inter-cropping of bamboo in eucalyptus and rubber forest could improve the growth environment of these forests, enhance the stability of these ecosystems, and play a significant role in maintaining eco-balance, improving forest land productivity and keeping soil fertility. This study could provide theoretic supports to the conversion of pure eucalyptus and rubber forests.