人工林林下植被研究进展

REVIEW ON RESEARCH OF UNDERSTOREY OF PLANTATION

本文从人工林林下植被研究方法、林下植被与经营管理的关系、林下植被的作用等3个重要侧面,系统总结了林下植被的研究现状与热点问题。当人工林林下植被达到一定覆盖度和生物量时,对林地土壤肥力有明显改善作用。土壤的生物化学活性、土壤微生物、土壤有机和无机养分在数值上均与林下植被盖度关系密切,发育林下植被是恢复人工林地力的重要途径。

Researches on understorey of plantation in recent 20 years are reviewed. As one of the parts in forest ecosystem, understorey takes an important role in the plantation system. In this paper, the main subjects regarding the methodology of understorey, its ecological function, the relation between the management and the under-storey were dealt with. Based on the abundant literatures, the latest results and the prospects were proposed. The correlation among the activities of the microorganisms and the enzymes, the medical and chemical properties of the soil and the coverage of the understorey was positive. That shows that the coverage of the understorey is an essential indicators of the soil fertilization. As a result, developing the understorey is an important way to recover the soil fertility of the plantation.