不同覆盖材料对城市树穴土壤理化性质的影响

发布时间：2018-02-26 00:11

  本文关键词： 树穴 覆盖材料 土壤物理性质 土壤化学性质　出处：《西北林学院学报》2017年06期 　论文类型：期刊论文

【摘要】：以国槐树穴土壤为研究对象,进行树篦子、草皮、透水砖、鹅卵石、木片和无覆盖6种覆盖处理,2a后测定树穴土壤理化性质。结果表明,树穴覆盖对0~10cm土层的土壤理化性质影响较大,其中木片覆盖能显著改善土壤理化性质,使土壤容重降低8.72%,总孔隙度提高19.81%,有机质、全氮、碱解氮、速效磷和速效钾含量分别提高64.65%、60.34%、110.54%、107.08%、62.34%;透水砖覆盖会压实树穴土壤;树篦子、鹅卵石和草皮覆盖对土壤理化性质无显著影响。树穴覆盖对10~20cm土层土壤理化性质的影响程度较0~10cm土层有所减弱,对20cm以下的土壤理化性质无显著影响。
[Abstract]:In the tree hole soil as the research object, the tree grate, a water permeable brick, stone, wood and non covered 6 kinds of coverage, the physicochemical properties of tree soil was determined by 2A. The results show that the tree coverage in the depth of 0~10cm soil physicochemical properties influence, which can cover the wood physical and chemical properties significantly to improve the soil, the soil bulk density decreased 8.72%, the total porosity increased 19.81%, organic matter, total nitrogen, available nitrogen, available phosphorus and available potassium content increased 64.65%, respectively, 60.34%, 110.54%, 107.08%, 62.34%; the water permeable brick covering the compaction of tree soil; tree grate, pebbles and grass mulch on soil physicochemical properties had no significant effect of tree cover. Influence on physicochemical properties of 10~20cm soil than in 0~10cm soil layer decreased, the 20cm below the soil physicochemical properties had no significant effect.

【作者单位】： 北京林业大学林学院;
【基金】：北京市科技计划(Zl61100001316004)
【分类号】：S714.2
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本文编号：1535723