Differential mechanisms drive changes in soil C pools under N and P enrichment in a subalpine spruce plantation
文献类型：期刊论文
| 作者 | Huang, Junsheng2; Liu, Lingli2 ; Qi, Kaibin1; Yang, Tinghui1; Yang, Bing; Bao, Weikai; Pang, Xueyong
|
| 刊名 | GEODERMA
 |
| 出版日期 | 2019 |
| 卷号 | 340页码:213-223 |
| 关键词 | Soil C N enrichment P enrichment Soil enzyme activities Soil aggregate fractions |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2019.01.027 |
| 文献子类 | Article |
| 英文摘要 | Nitrogen (N) and phosphorus (P) availabilities can affect soil C cycling by altering both plants and microbial activity. It remains unclear how the changes in plant and microbial processes could regulate C dynamics of different soil fractions, thereby affecting soil C sequestration. Based on a field fertilization experiment in a subalpine spruce plantation, we examined the effects of N, P and combined N and P addition (NP) treatments on plant C inputs, soil C contents and enzyme activities of bulk soil and different aggregate fractions. We aimed to explore the mechanisms by which N and P addition affected soil C sequestration. After 4-year fertilization, the N treatment increased soil C content by 21%, accompanied by suppressed polyphenol oxidase activity ( - 43%). However, the P and NP treatments decreased soil C content by 14% and 7%, respectively, accompanied by reduction in fine root biomass ( - 51% and - 50%, respectively). Fertilization also affected soil aggregate C pools, with decreased C content in the macroaggregates (5000-250 mu m; MaA) under the P and NP treatments, and increased C content in the silt and clay fraction ( < 53 mu m; S&C) under all fertilization treatments. The step-AIC analysis showed that the effects of fertilization on bulk soil C content were best explained by changes in soil polyphenol oxidase activity and fine root biomass. Overall, our results indicate that N-induced soil C accrual, mainly accumulating in the S&C, could be largely driven by the suppressed oxidase activity, and that decreases in soil C content under the P and NP treatments, mostly occurring in the MaA, was likely associated with the reduced C inputs by fine roots. |
| 学科主题 | Soil Science |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1872-6259 |
| WOS关键词 | ROOT-DERIVED CARBON ; NITROGEN DEPOSITION ; ORGANIC-MATTER ; PHOSPHORUS LIMITATION ; BIOCHEMICAL-COMPOSITION ; MICROBIAL BIOMASS ; ENZYME-ACTIVITIES ; RESPONSES ; STORAGE ; SEQUESTRATION |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000457949200021 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770658] ; National Key Research and Development Program of China [2017YFC0505002] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA20020401] ; Science and Technology Department of Sichuan Province [2018SZDZX0030, 18ZDYF0307] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/19402]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Key Lab Sichuan Prov, POB 416, Chengdu 610041, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Junsheng,Liu, Lingli,Qi, Kaibin,et al. Differential mechanisms drive changes in soil C pools under N and P enrichment in a subalpine spruce plantation[J]. GEODERMA,2019,340:213-223. |
| APA | Huang, Junsheng.,Liu, Lingli.,Qi, Kaibin.,Yang, Tinghui.,Yang, Bing.,...&Pang, Xueyong.(2019).Differential mechanisms drive changes in soil C pools under N and P enrichment in a subalpine spruce plantation.GEODERMA,340,213-223. |
| MLA | Huang, Junsheng,et al."Differential mechanisms drive changes in soil C pools under N and P enrichment in a subalpine spruce plantation".GEODERMA 340(2019):213-223. |
入库方式： OAI收割
来源：植物研究所
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