Variations in the patterns of soil organic carbon mineralization and microbial communities in response to exogenous application of rice straw and calcium carbonate
文献类型：期刊论文
| 作者 | Feng, Shuzhen1,2,3; Huang, Yuan1,2,4; Ge, Yunhui1,5; Su, Yirong1,3; Xu, Xinwen4; Wang, Yongdong4; He, Xunyang1,3 |
| 刊名 | Science of the total environment
 |
| 出版日期 | 2016-11-15 |
| 卷号 | 571页码:615-623 |
| 关键词 | Karst Isotope tracing technique Soil microbial communities Priming effect Soil organic carbon mineralization Pcr-dgge |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2016.07.029 |
| 通讯作者 | He, xunyang(hbhpjhn@isa.ac.cn) |
| 英文摘要 | The addition of exogenous inorganic carbon (caco3) and organic carbon has an important influence on soil organic carbon (soc) mineralization in karst soil, but the microbial mechanisms underlying the soc priming effect are poorly understood. we conducted a 100-day incubation experiment involving four treatments of the calcareous soil in southwestern china's karst region: control, c-14-labeled rice straw addition, c-14-labeled caco3 addition, and a combination of c-14-labeled rice straw and caco3. changes in soil microbial communities were characterized using denaturing gradient gel electrophoresis with polymerase chain reaction (pcr-dgge) and real-time quantitative pcr (q-pcr). both c-14-rice straw and (caco3)-c-14 addition stimulated soc mineralization, suggesting that organic and inorganic c affected soc stability. addition of straw alone had no significant effect on bacterial diversity; however, when the straw was added in combination with calcium carbonate, it had an inhibitory effect on bacterial and fungal diversity. at the beginning of the experimental period, exogenous additives increased bacterial abundance, although at the end of the 100-day incubation bacterial community abundance had gradually declined. incubation time, exogenous input, and their interaction significantly affected soc mineralization (in terms of priming and the cumulative amount of mineralization), microbial biomass carbon (mbc), and microbial community abundance and diversity. moreover, the key factors influencing soc mineralization were mbc, bacterial diversity, and soil ph. overall, these findings support the view that inorganic c is involved in soil c turnover with the participation of soil microbial communities, promoting soil c cycling in the karst region. (c) 2016 elsevier b.v. all rights reserved. |
| WOS关键词 | ELEVATED CO2 ; NITROGEN MINERALIZATION ; BACTERIAL COMMUNITIES ; SOUTH CHINA ; BIOMASS-C ; FUNGAL ; MATTER ; MECHANISMS ; SYSTEMS ; PH |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000383930400061 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376019 |
| 专题 | 中国科学院大学 |
| 通讯作者 | He, Xunyang |
| 作者单位 | 1.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Huanjiang Observat & Res Stn Karst Ecosyst, Huangjiang 547100, Peoples R China 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 5.Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Shuzhen,Huang, Yuan,Ge, Yunhui,et al. Variations in the patterns of soil organic carbon mineralization and microbial communities in response to exogenous application of rice straw and calcium carbonate[J]. Science of the total environment,2016,571:615-623. |
| APA | Feng, Shuzhen.,Huang, Yuan.,Ge, Yunhui.,Su, Yirong.,Xu, Xinwen.,...&He, Xunyang.(2016).Variations in the patterns of soil organic carbon mineralization and microbial communities in response to exogenous application of rice straw and calcium carbonate.Science of the total environment,571,615-623. |
| MLA | Feng, Shuzhen,et al."Variations in the patterns of soil organic carbon mineralization and microbial communities in response to exogenous application of rice straw and calcium carbonate".Science of the total environment 571(2016):615-623. |
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来源：中国科学院大学
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