生态学报2024，Vol.44Issue(10)：4388-4399,12.DOI:10.20103/j.stxb.202308301871
外源氮输入对黄河三角洲盐地碱蓬CHCl3和CHBr3通量特征的影响
Effects of exogenous nitrogen input on CHCI3 and CHBr3 flux characteristics of Suaeda glauca in the Yellow River Delta
摘要
Abstract
Chloroform(CHCl3)and bromoform(CHBr3),two important volatile halogenated hydrocarbons(VHCs),are trace greenhouse gases and ozone-destroying substances that play an important role in global climate change.In this paper,Suaeda glauca,a dominant species in the Yellow River Delta,was subjected to pot experiments to investigate the effects of different nitrogen additions(CK,control,6.0 g N m-2 a-1;1.5N0,low nitrogen treatment,9.0 g N m-2 a-1;3.0N0,high nitrogen treatment,18.0 g N m-2 a-1)on its and its microecological CHCl3 and CHBr3 flux characteristics.The results showed that CHCl3 and CHBr3 fluxes decreased first and then increased at different nitrogen gradients.CHCl3 release was promoted at low concentration of 1.5N0,but inhibited at high concentration of 3.0N0.The peaks of gas fluxes of CHCl3 and CHBr3 in Suaeda glauca appeared during its withering and seedling stages,respectively.The main reason was that nitrogen addition stimulated the balance between gas consumption and production,as well as changed in growth factors during different growth stages of plants.According to the correlation analysis,the CHCl3 flux of Suaeda glauca was affected by the interaction of many factors.There was a significant correlation between the root length of the plant and the CHBr3.The longer the root,the lower the CHBr3.There were different change trends of CHCl3 and CHBr3 in the potted micro-ecosystem under different nitrogen gradients.CHCl3 increased first and then decreased,while CHBr3 decreased first and then increased.The highest and lowest values of gas fluxes appeared in different growing plants period.The gas flux of the potted micro-ecosystem was mainly affected by the interaction of soil NH4-N,NO3--N and plant litter.关键词
外源氮输入/挥发性卤代烃/盐地碱蓬/盆栽微生态系统/通量特征Key words
exogenous nitrogen input/volatile halohydrocarbons/Suaeda glauca/potted micro-ecosystem/flux characteristics引用本文复制引用
许佳宁,李玲玉,谢文霞,张嘉乐,丁文超..外源氮输入对黄河三角洲盐地碱蓬CHCl3和CHBr3通量特征的影响[J].生态学报,2024,44(10):4388-4399,12.基金项目
山东省自然科学基金面上项目(ZR2020MD073) （ZR2020MD073）
崂山实验室科技创新项目(LSKJ202203206) （LSKJ202203206）
国家重点研发项目子课题(2022YFC3104202) （2022YFC3104202）
福建省海洋物理与地质过程重点实验室开放基金(KLMPG-23-06) （KLMPG-23-06）
