应用生态学报2018，Vol.29Issue(4)：1321-1327,7.DOI:10.13287/j.1001-9332.201804.018
城市污泥应用于边坡植被恢复对地表水环境的影响
Influences of municipal sludge applied in slope vegetation restoration on surface water environment
摘要
Abstract
The application of municipal sludge in ecological restoration has a good prospect for avoiding the food chain of grain crops,but its influences on surface water environmental are unclear.The municipal sludge and construction waste were mixed with 1 ∶ 1 (Ⅴ/Ⅴ) as growth media,which were covered over simulation coal gangue slopes.Eight native woody species were sowed in the mixed media.The plant growth and coverage,as well as conductivity,pH,the concentrations of nitrogen (N),phosphorus (P),potassium (K),heavy metal and polycyclic aromatic hydrocarbon (PAHs) of surface and underground runoff of the slopes in the growing season were investigated.The results showed that plants grew well on the mixed media.The average plant coverage reached 60％.The pH of the surface and underground runoff changed little and near to neutral.The conductivity,N,P,K,heavy metal and PAHs contents of the slope runoff were high.The N and P contents in the growing season were above the National Standards of Surface Water Quality (GB 3838-2002) V.The contents of heavy metal were the highest in July.The contents of As lied at the GB Ⅳ-Ⅴ,whereas other heavy metal contents up to GB Ⅱ-Ⅳ.With strong rain leaching in the summer as well as the absorption,degrading and fix effect of plant-soil system on chemical substrates,the conductivity and N,P,K,heavy metal and PAHs contents of the slope runoff significantly decreased.The contents of heavy metal in late stage of growing season arrived at GB Ⅱ-Ⅲ.The contents of PAHs reduced by about 50％.The direct application of municipal sludge in ecological restoration of coal gangue slope were beneficial to plant growth.The plant-soil system might gradually decrease the harmful substance concentrations in the growth media.The negative influences on surface water environment mainly came from eutrophication of N and P.Generally,the environmental safety is manageable.关键词
城市污泥/生长基质/植被恢复/煤矸石边坡/水环境/污染物Key words
municipal sludge/growth media/vegetation restoration/coal gangue slope/water environment/harmful substance引用本文复制引用
甄晨光,冷平生,刘丽娟,窦德泉,胡增辉..城市污泥应用于边坡植被恢复对地表水环境的影响[J].应用生态学报,2018,29(4):1321-1327,7.基金项目
本文由北京市自然科学基金项目(8132005))和北京市属高等学校创新团队建设与教师职业发展计划项目(IDHT20150503)资助 （8132005）
This work was supported by the Natural Science Fundation of Beijing (8132005) and the Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges of Beijing (IDHT20150503). （8132005）
