植被对城市塑山堆土土壤物理性质的影响

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英文篇名：Impact of Different Vegetation Types on Soil Physical Properties in Urban Artificially Constructed Hill Soils 作者：李财金 ; 唐玲 ; 赖涛 英文作者：Li Caijin;Tang Ling;Lai Tao;Shenzhen Shenshui Water Resources Consulting Co.,Ltd.; 关键词：植物类型 ; 城市塑山堆土 ; 土壤物理性质 英文关键词：vegetation types;;urban artificially constructed hill soils;;soil physical properties 中文刊名：FJSB 英文刊名：Subtropical Soil and Water Conservation 机构：深圳市深水水务咨询有限公司; 出版日期：2018-12-31 出版单位：亚热带水土保持 年：2018 期：v.30;No.118 语种：中文; 页：FJSB201804002 页数：5 CN：04 ISSN：35-1283/TV 分类号：10-13+33

摘要

通过对4个试验小区的土壤进行取样分析,对比了不同植被下城市塑山堆土的土壤物理性质,结果表明,不同植被类型土壤容重随土层深度的增加而呈逐渐增大趋势,而土壤总孔隙度、毛管孔隙度和非毛管孔隙度的变化趋势与之相反。不同植被类型之间的土壤物理性质差异与植物根系分布关系较大,灌木地、人工草地和自然草地的平均土壤容重分别较裸地减少19. 3%、13. 4%和10. 7%。从改善容重、孔隙度和三相比等土壤物理指标来看,总体以灌木的效果最好,其次是人工草地,自然草地效果相对较差。因此,采取灌草结合的方式对土壤进行生态修复,有利于改善土壤容重和孔隙度,使土壤三相比趋于合理。
        Through the soil sampling analysis in four experimental plots,it was compared the soil physical properties of urban artificially constructed hill soils under different vegetation types.The results showed that the soil bulk density and soil non-capillary porosity of different vegetation types increased gradually with the increase of soil depth,while soil total porosity and capillary porosity changed.The change trend of soil total porosity and capillary porosity is opposite.The difference of soil physical properties between different vegetation types is closely related to the distribution of plant roots.The average soil bulk density of shrub land,artificial grassland and natural grassland decreased by 19.3%,13.4% and 10.7% respectively compared with bare land.In terms of improving soil physical indexes such as bulk density,porosity and three-phase ratio,shrubs played the best role,followed by artificial grassland.The natural grassland had a relatively poor effect.Therefore,the combination of shrub and grass can improve soil bulk density and porosity,so as to make the three-phase ratio of soil more reasonable.

引文

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