废胶粒基质调控对天津机场地被植物群落特征的影响

Effects of Substrate Regulation with Waste Crumb Rubber on the Characteristics of Plant Community at Tianjin Airport

[目的]探究废弃物基质调控对天津滨海国际机场地被植物群落动态特征的影响。[方法]将废胶粒以低、中、高3个浓度梯度添加到机场试验地土壤中,以不添加胶粒为对照区,于2016年4—9月进行植物群落调研。[结果]试验区植物种类共计32种,其中对照区植物共有15科27种,废胶粒调控区植物减少到8科17种,且随废胶粒添加量的增加而减少。废胶粒调控区植物群落的丰富度均显著低于对照区,废胶粒调控区的均匀度与对照区相比差异不大;废胶粒调控区的多样性均低于对照区,且随添加量的增加而降低;中、高添加量废胶粒调控区的生物量均高于对照区,低添加量调控区的则较低。[结论]土壤基质中添加废胶粒减少了天津机场植物种类,显著降低了植物群落的丰富度和多样性。

[Objective]To explore the effects of substrate regulation on the characteristics of plant community at Tianjin Binhai International Airport.[Method]Waste crumb rubber was added in soil at low,medium and high concentrations.Taking the area with no addition as control,plant communities were surveyed from April 2016 to September 2016.[Result]A total of 32 plant species were collected,among which,16 families and 20 species were found in control area.In the crumb rubber area,plants decreased to 8 families and 17 species,and decreased with increasing the amounts of crumb rubber added.The species richness of plants in crumb rubber area was lower than that in control area,but no significant difference in evenness was found between crumb rubber and control area.The diversity of plant community in the crumb rubber area was lower than that in control area,and decreased with increasing the amounts of crumb rubber added.Compared with control,the biomass of plant community in the crumb rubber area with medium and high concentrations was higher,while that in low addition area was lower.[Conclusion]Adding waste crumb rubber in soil reduced plant species in Tianjin airport,significantly decreased richness and diversity of plant community.