摘要
以石栎(Lithocarpus glabra)为研究对象,通过分析不同强度酸喷淋于土壤、地上部分和两者兼喷3种处理方式下的生物量、营养元素和光合作用情况,探究石栎对酸雨胁迫的响应特征。结果表明,含H2SO4和HNO3的强酸(pH=2.5)喷淋到土壤中对石栎幼苗生物量积累、氮元素吸收和光合作用均有显著促进作用;而喷淋到植株地上部分可能对石栎幼苗生物量积累、营养元素吸收和光合作用有抑制作用,但基本无显著差异;同时喷淋土壤和地上部分,促进和抑制作用可以互相抵消,对石栎幼苗生物量积累、营养元素吸收和光合作用基本无显著影响。因此,石栎对pH=2.5的强酸有很好的适应性,短期强酸雨胁迫不会对石栎产生显著影响,可以作为亚热带酸雨区森林恢复的备选树种。
The Lithocarpus glabra was used as the research object.Biomass,nutrient elements and photosynthesis were analyzed when acid was sprayed on soil,up-ground part and both of soil and up-ground part to explored the response characteristics of Lithocarpus glabra to acid rain stress.Results showed that when strong acid with H2 SO4 and HNO3 of pH=2.5 was sprayed on soil,biomass,nitrogen element and photosynthesis of its seedlings were promoted;when that was sprayed on up-ground part,there existed an inhibition effect but not significantly;when that was sprayed on both of soil and up-ground part,promotion and inhibition might offset,resulting in little effect on Lithocarpus glabra.Therefore,Lithocarpus glabra had the ability to adapt strong acid of pH=2.5 in short term without significant impact.It was recommended that Lithocarpus glabra was suitable for the restoration reconstruction alternative species in subtropical acid rain area forests.
作者
李斌
陈敏斯
刘美华
俞飞
伊力塔
LI Bin;CHEN Minsi;LIU Meihua;YU Fei;YI Lita(College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou Zhejiang 311300;College of Forestry,Beijing Forestry University,Beijing 100083)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第1期49-53,共5页
Environmental Pollution & Control
基金
浙江省自然科学基金资助项目（No.LY19C160005）
国家自然科学基金资助项目（No.31971623）
关键词
酸雨
生物量
营养元素
光合作用
石栎
acid rain
biomass
nutrient elements
photosynthesis
Lithocarpus glabra
