KMS Institute of soil and water conservation Chinese Academy of Sciences
| Positive responses of belowground C dynamics to nitrogen enrichment in China | |
| Deng, Lei1,2; Peng, Changhui1,2; Zhu, Guangyu1; Chen, Lei1; Liu, Yulin1; Shangguan, Zhouping1; Deng, L; Shangguan, ZP (reprint author), 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China. | |
| 文章类型 | Article |
| 2018 | |
| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| 通讯作者邮箱 | leideng@ms.iswc.ac.cn ; shangguan@ms.iswc.ac.cn |
| 卷号 | 616页码:1035-1044 |
| 摘要 | Determining how nitrogen (N) impacts ecosystem carbon (C) cycling is critical to using C sequestration to offset anthropogenic CO2 emissions. The N deposition rate in China is higher than the global average; however, many results of N enrichment experiments in China have not been included in global syntheses. In this study, we assembled a large dataset that comprised 124 published studies concerning N addition experiments, including 570 observations at 127 sites across China, to quantify the responses of belowground C dynamics to N enrichment in terrestrial ecosystems in China by a meta-analysis. The results showed that overall soil organic C, dissolved organic C (DOC) and soil microbial biomass C (MBC) increased by 1.8, 7.4, and 8.8%, respectively (P < 0.05), in response to N enrichment; belowground biomass and litter increased by 14.6 and 24.4%, respectively (P < 0.05); and soil respiration increased by 6.1% (P < 0.05). N enrichment promoted C inputs into the soil mainly by increasing litter and belowground biomass inputs. Additionally, N enrichment increased C output by increasing soil respiration. Land use type and N addition level had different impacts on the soil C pool and on soil respiration. DOC, MBC, and litter exhibited more positive responses to N deposition in cooler and more arid regions than in other regions. The meta-analysis indicated that N enrichment had a positive impact on belowground C cycles in China. Climate played a greater role than did N deposition level in affecting processes of ecosystem C cycling. Moreover, belowground C cycle processes are determined by complicated interactions among land use type, N enrichment, and climate. (c) 2017 Elsevier B.V. All rights reserved. |
| 关键词 | Climate Land Use Type Meta-analysis n Addition Soil Carbon Soil Respiration |
| 学科领域 | Environmental Sciences |
| DOI | 10.1016/j.scitotenv.2017.10.215 |
| 收录类别 | SCI |
| 出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 语种 | 英语 |
| WOS记录号 | WOS:000424121800105 |
| 出版者 | ELSEVIER SCIENCE BV |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | sbir.nwafu.edu.cn/handle/361005/7835 |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Deng, L; Shangguan, ZP (reprint author), 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China. |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.（2）Univ Quebec Montreal, Dept Biol Sci, Ctr CEF ESCER, Montreal, PQ H3C 3P8, Canada |
| 推荐引用方式 GB/T 7714 | Deng, Lei,Peng, Changhui,Zhu, Guangyu,et al. Positive responses of belowground C dynamics to nitrogen enrichment in China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,616:1035-1044. |
| APA | Deng, Lei.,Peng, Changhui.,Zhu, Guangyu.,Chen, Lei.,Liu, Yulin.,...&Shangguan, ZP .(2018).Positive responses of belowground C dynamics to nitrogen enrichment in China.SCIENCE OF THE TOTAL ENVIRONMENT,616,1035-1044. |
| MLA | Deng, Lei,et al."Positive responses of belowground C dynamics to nitrogen enrichment in China".SCIENCE OF THE TOTAL ENVIRONMENT 616(2018):1035-1044. |
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| 10（2018.3.16）.pdf（1571KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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