不同覆盖方式对油松人工公益林造林效能的影响研究

发布时间：2018-03-24 02:18

本文选题：油松　切入点：覆盖　出处：《山西农业大学》2014年硕士论文

【摘要】：本文主要研究不同覆盖方式对油松生态公益林成活率、生长效果及生长环境的影响,研究表明,不同覆盖方式下,渗水地膜的整体综合效果最为理想,砾石覆盖效果次之,这两种覆盖方式对营建油松生态公益林的积极效果显著高于其他三种覆盖方式。渗水地膜的优势主要体现在：一、渗水地膜有利于油松生态公益林内微气候的形成,但不影响土壤与外界因子之间的物质交换和能量循环。二、渗水地膜可以缓冲环境变化对油松根系的刺激作用,对油松根系生长有十分积极的作用。试验证明,油松生态公益林在营建过程中,最适宜的覆盖方式应为渗水地膜覆盖法,但由于渗水地膜覆盖法造价较高,在实际营建过程中,可综合考虑区域经济水平,选择造价较低的砾石覆盖法。
[Abstract]:In this paper, the effects of different mulching methods on survival rate, growth effect and growth environment of Pinus tabulaeformis ecological public welfare forest were studied. The positive effects of these two kinds of mulching methods on the construction of ecological public welfare forest of Pinus tabulaeformis were significantly higher than those of the other three. The advantages of water seepage film were mainly reflected in the following aspects: first, the infiltration film was conducive to the formation of microclimate in the ecological public welfare forest of Pinus tabulaeformis. But it does not affect the material exchange and energy cycle between soil and external factors. Secondly, the permeable film can buffer the stimulative effect of environmental changes on the root system of Pinus tabulaeformis, and play a very positive role in the root growth of Pinus tabulaeformis. The test results show that the most suitable way to cover the ecological public welfare forest of Pinus tabulaeformis should be the method of water seepage and film mulching, but because of the high cost of the method, the level of regional economy can be considered comprehensively in the process of construction. The method of gravel covering with lower cost is chosen.
【学位授予单位】：山西农业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：S791.254

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