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通过温带盐沼土中的微生物介导途径,输入对甲流量的影响

Jiale Zhang¹, Wenchao Ding¹, Yue Luo¹

¹School of Environment and Geography, Qingdao University, Qingdao 266071, China.

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概括

输入的对盐沼哈洛甲 (CH3Cl和CH3Br) 的影响. 高度会增加排放,而低度会通过影响土壤碳和微生物群落来增加消费.

科学领域:

环境科学环境科学
大气化学大气化学
土壤科学土壤科学

背景情况:

甲基化物 (CH3Cl) 和甲基化物 (CH3Br) 等甲是大气中的重要温室气体和破坏臭氧层的物质.
盐沼土壤作为这些甲的天然来源和沉积点起着至关重要的作用.
输入是温室气体预算的主要驱动因素,但其对盐沼中甲流量的具体影响尚不清楚.

研究的目的:

调查黄河三角洲盐沼土中CH3Cl和CH3Br净排放的机制.
为了确定不同度的气输入如何影响这些甲流.

主要方法:

在黄河三角洲盐沼地区进行实地研究.
应用不同的气输入度 (9.0 和 18.0 g N·m−2·a−1).
测量甲 (CH3Cl和CH3Br) 的净排放流.
分析土壤的物理化学特性 (土壤有机碳,溶解有机物质) 和微生物群落结构 (Actinobacteria丰富度).

主要成果:

高输入量 (18.0g N·m−2·a−1) 显著增加了CH3Cl的产量7%和CH3Br的产量19%.
低输入量 (9.0g N·m−2·a−1) 增加了CH3Cl的消耗量24%,而CH3Br的消耗量增加了13%.
的输入通过土壤有机碳,溶解的有机物质的变化和抑制作用因菌的抑制影响了甲流量,这影响了甲的消耗.

结论:

无生物生产和微生物生物降解过程共同控制盐沼土中的甲净排放.
由全球投入驱动的污染增加,可能会加剧温带盐沼生态系统的净甲排放.

关键词:

外源的输入量是外源的输入量.流体特征流体特征甲 (Halomethane) 是一种甲的化合物.影响机制的影响机制.黄河三角洲是什么意思黄河三角洲

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