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Impacts of oxalic acid and glucose additions on N transformation in microcosms via artificial roots

文献类型：期刊论文

作者Yuan, Yuanshuang1,2; Zhao, Wenqiang1; Zhang, Ziliang1,2; Xiao, Juan3; Li, Dandan1; Liu, Qing1; Yin, Huajun1,3
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期2018-06
卷号121页码:16-23
ISSN号0038-0717
关键词Exudate component Potential net N mineralization rate Mineral-organic associations Rhizosphere process Subalpine coniferous forest
DOI10.1016/j.soilbio.2018.03.002
产权排序1
文献子类Article
英文摘要Root exudates can accelerate nitrogen (N) cycling by stimulating the decomposition of soil organic matter (SOM); however, it remains unclear how inputs of individual exudate components affect the biotic and abiotic processes that drive the transformation and release of inorganic N. In a well-controlled rhizosphere system, we added two exudate chemicals (i.e., glucose and oxalic acid) through artificial roots to soils collected from two forests (an similar to 70-year-old spruce plantation and an similar to 200-year-old spruce-fir forest) over a period of 50 days. The results showed that oxalic acid significantly accelerated both N mineralization and availability, which are mechanisms involved in abiotic process that disrupt previously protected mineral-organic associations (e.g., metal organic complexes (MOCs) and short-range order phases (SROs)) and biotic process that accelerate microbial processes. Glucose also enhanced N decomposition, but this enhancement was significantly smaller than that obtained with oxalic acid, presumably because glucose addition increased the formation of mineral-organic associations of MOCs and SROs, thereby limiting microbial access. In addition, the preferential utilization of glucose by microbes can also lead to lower N decomposition. Our results also showed that the component induced changes in N mineralization were lower in the established spruce plantation (e.g., from 45% to 89%) than in the spruce-fir forest (e.g., from 105% to 150%), potentially due to the decresed biotic processes observed after exudate additions in the spruce plantation compared with the spruce-fir forest. The decreased changes in N mineralization in the spruce plantation were also related to component-induced abiotic processes. These observations suggested that oxalic acid and glucose differentially impact rhizosphere N transformation in forest soils, but the impacts are mediated by soil type.
学科主题Environment/ecology
URL标识查看原文
WOS关键词SOIL MICROBIAL BIOMASS ; ORGANIC-MATTER ; CARBON DECOMPOSITION ; EXUDATE COMPONENTS ; EXTRACTION METHOD ; FOREST ; RHIZODEPOSITION ; MINERALIZATION ; ASSOCIATIONS ; NUTRIENTS
WOS研究方向Agriculture
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000432884100005
源URL[http://210.75.237.14/handle/351003/29883]  
专题生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
成都生物研究所_生态研究
生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
生物多样性与生态系统服务领域
生物多样性与生态系统服务领域_生态研究
作者单位1.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China;
2.Univ Chinese Acad Sci, Belling 100049, Peoples R China;
3.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637000, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Yuanshuang,Zhao, Wenqiang,Zhang, Ziliang,et al. Impacts of oxalic acid and glucose additions on N transformation in microcosms via artificial roots[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,121:16-23.
APA Yuan, Yuanshuang.,Zhao, Wenqiang.,Zhang, Ziliang.,Xiao, Juan.,Li, Dandan.,...&Yin, Huajun.(2018).Impacts of oxalic acid and glucose additions on N transformation in microcosms via artificial roots.SOIL BIOLOGY & BIOCHEMISTRY,121,16-23.
MLA Yuan, Yuanshuang,et al."Impacts of oxalic acid and glucose additions on N transformation in microcosms via artificial roots".SOIL BIOLOGY & BIOCHEMISTRY 121(2018):16-23.

入库方式： OAI收割

来源：成都生物研究所

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