Soil carbon balance by priming differs with single versus repeated addition of glucose and soil fertility level
文献类型：期刊论文
| 作者 | Wu, Lei1; Xu, Hu1; Xiao, Qiong1; Huang, Yaping1; Suleman, Memon Muhammad1; Zhu, Ping2; Kuzyakov, Yakov3; Xu, Xingliang4 ; Xu, Minggang1; Zhang, Wenju1
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| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
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| 出版日期 | 2020-09-01 |
| 卷号 | 148页码:9 |
| 关键词 | Priming effect Addition pattern Soil fertility Nutrient availability Soil C balance |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2020.107913 |
| 通讯作者 | Zhang, Wenju(zhangwenju01@caas.cn) |
| 英文摘要 | Labile carbon (C) inputs strongly alter soil organic matter (SOM) turnover by priming, thus affecting soil C dynamics and soil fertility in the long term. The frequency of labile C inputs is expected to affect the intensity of priming effect. We evaluated the effects of single versus repeated additions of C-13-labeled glucose (with added C-13 corresponding to 2% of soil organic C content) to five soils with increasing fertility level on the intensity of priming effect and soil C balance. Repeated glucose addition induced 61-108% greater C mineralization due to positive priming than the single addition in all soils. The intensity of priming effect declined with soil fertility level and mineral nitrogen (N) content, but increased with higher activities of N-acquisition enzymes (N-acetyl-glucosaminidase and leucine amino peptidase). Consequently, the decrease in N availability strongly increased the intensity of priming effect presumably by enhancing microbial N mining from SOM. Considering the C balance between SOM losses due to priming and glucose-C retention, glucose addition was responsible for net C losses in the low and moderate fertility soils (-14.0 to -0.30 mg C g(-1) SOC after 14 weeks) but led to C gains in the high fertility soils (+0.44 to +4.36 mg C g(-1) SOC). Greater retention of glucose-C was attributed to higher N availability and more intensive microbial growth, thus supporting microbial necromass formation and soil C sequestration. Compared to single addition, repeated glucose addition caused larger net C losses or lower C gains due to stronger SOM priming. In conclusion, the frequency of substrate addition and soil fertility are important regulators of SOM priming and the C balance. This knowledge should be informative to interpret soil C dynamics in response to labile C inputs in agroecosystems. |
| WOS关键词 | ORGANIC-MATTER ; MICROBIAL BIOMASS ; FUMIGATION EXTRACTION ; SOM DECOMPOSITION ; N AVAILABILITY ; NITROGEN ; MINERALIZATION ; MECHANISMS ; INPUT ; MICROORGANISMS |
| 资助项目 | National Natural Science Foundation of China[41877105] ; National Natural Science Foundation of China[41620104006] ; National Natural Science Foundation of China[41907093] ; Innovation Talent Promotion Program of Ministry of Science and Technology |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000566668900044 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; Innovation Talent Promotion Program of Ministry of Science and Technology |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156863]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Wenju |
| 作者单位 | 1.Chinese Acad Agr Sci CAAS, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, Beijing 100081, Peoples R China 2.Jilin Agr Acad Sci, Inst Soil & Fertilizer, Gongzhuling 136100, Peoples R China 3.Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, Busgenweg 2, D-37077 Gottingen, Germany 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Lei,Xu, Hu,Xiao, Qiong,et al. Soil carbon balance by priming differs with single versus repeated addition of glucose and soil fertility level[J]. SOIL BIOLOGY & BIOCHEMISTRY,2020,148:9. |
| APA | Wu, Lei.,Xu, Hu.,Xiao, Qiong.,Huang, Yaping.,Suleman, Memon Muhammad.,...&Zhang, Wenju.(2020).Soil carbon balance by priming differs with single versus repeated addition of glucose and soil fertility level.SOIL BIOLOGY & BIOCHEMISTRY,148,9. |
| MLA | Wu, Lei,et al."Soil carbon balance by priming differs with single versus repeated addition of glucose and soil fertility level".SOIL BIOLOGY & BIOCHEMISTRY 148(2020):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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