Tracking the photosynthesized carbon input into soil organic carbon pools in a rice soil fertilized with nitrogen
文献类型：期刊论文
| 作者 | Ge, Tida1,2,3; Liu, Chang1,2; Yuan, Hongzhao1,2,3; Zhao, Ziwei1,2; Wu, Xiaohong1,2; Zhu, Zhenke1,2; Brookes, Phil1,2; Wu, Jinshui1,2,4 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 392期号:1-2页码:17-25 |
| 关键词 | Soil organic C Rice N application rate C-14 labeling Photo-assimilated C |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-014-2265-8 |
| 通讯作者 | Ge, Tida(sjtugtd@gmail.com) |
| 英文摘要 | Replenishment of soils with carbon (C) produced during photosynthesis plays an important role in global C cycling. Nitrogen (N) fertilization is critical for rice production, but its effects on the deposition of photosynthesis-derived C into soil C pools is poorly understood. To address this, we used continuous C-14-labeling to quantify the deposition of photosynthesis-derived C into various soil organic pools in a rice-soil system. Rice (Oryza sativa L.) was continuously supplied with C-14-labeled CO2 (C-14-CO2) for 36 days, with increasing N fertilizer rates (0 [N-0], 10 [N-10], 20 [N-20], or 40 mg N kg(-1) soil [N-40], respectively). Rice shoot and root biomass significantly increased following N fertilization. The amount of photosynthesis-derived C converted into soil organic carbon (C-14-SOC) was proportional to the soil N concentration, and accounted for 8.0-19.3 % of rice biomass C. The C-14-SOC content was positively correlated with the rice root biomass, suggesting that N increased root exudation of photosynthesis-derived C. The amounts of C-14-labeled C in the dissolved organic carbon (C-14-DOC) and in the microbial biomass carbon (C-14-MBC), as proportions of C-14-SOC, were 3.9-7.8 and 6.6-24.0 %, respectively. The C-14-DOC, C-14-MBC, and C-14-SOC as proportions of total DOC, MBC, and SOC were 9.7-11.6, 6.9-10.6, and 0.37-1.71 %, respectively. Nitrogen fertilization promotes deposition of photosynthesis-derived C into SOC pools in a rate-dependent manner. However, the C-14-MBC as a proportion of both C-14-SOC (C-14-MBC/C-14-SOC) and MBC (C-14-MBC/MBC) increase during rice growth at lower N concentrations. |
| 收录类别 | SCI |
| WOS关键词 | GROWN SPRING WHEAT ; HORDEUM-VULGARE L ; LOLIUM-PERENNE ; FLOODED RICE ; PADDY SOILS ; N-FERTILIZATION ; PLANT ; RHIZOSPHERE ; DYNAMICS ; RHIZODEPOSITION |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000355152300003 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558392 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Ge, Tida |
| 作者单位 | 1.Chinese Acad Sci, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Hunan, Peoples R China 2.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Jiangshu 210008, Peoples R China 4.Chinese Acad Sci, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ge, Tida,Liu, Chang,Yuan, Hongzhao,et al. Tracking the photosynthesized carbon input into soil organic carbon pools in a rice soil fertilized with nitrogen[J]. PLANT AND SOIL,2015,392(1-2):17-25. |
| APA | Ge, Tida.,Liu, Chang.,Yuan, Hongzhao.,Zhao, Ziwei.,Wu, Xiaohong.,...&Wu, Jinshui.(2015).Tracking the photosynthesized carbon input into soil organic carbon pools in a rice soil fertilized with nitrogen.PLANT AND SOIL,392(1-2),17-25. |
| MLA | Ge, Tida,et al."Tracking the photosynthesized carbon input into soil organic carbon pools in a rice soil fertilized with nitrogen".PLANT AND SOIL 392.1-2(2015):17-25. |
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来源：南京土壤研究所
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