Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Nitrogen input in different chemical forms and levels stimulates soil organic carbon decomposition in a coastal wetland | |
Qu, Wendi1,2,3; Han, Guangxuan1,3 ; Eller, Franziska4; Xie, Baohua1; Wang, Jian5; Wu, Haitao6; Li, Juanyong1,2,3; Zhao, Mingliang1
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| Source Publication | CATENA
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| ISSN | 0341-8162 |
| 2020-11-01 | |
| Volume | 194Pages:11 |
| Keyword | Nitrogen input Soil organic carbon decomposition Nitrogen chemical forms and levels Coastal wetland |
| DOI | 10.1016/j.catena.2020.104672 |
| Corresponding Author | Han, Guangxuan(gxhan@yic.ac.cn) |
| Abstract | Nitrogen (N) input significantly regulates soil organic carbon (SOC) storage in N-limited ecosystems. However, the regulatory direction, magnitude, and mechanisms of SOC decomposition under continuous N input in different chemical forms and levels in coastal wetlands are poorly understood. We investigated the impact of 6-year N input in a coastal wetland of the Yellow River Delta, examining the effects on plant growth and soil properties for different chemical forms (NH: ammonium, NO: nitrate, and NN: ammonium-nitrate) and levels (5 g N m(-2) yr(-1), 10gNm -2 yr(-1), and 20 g N m(-2) yr(-1)) at two depths (0-10 cm, 10-20 cm). We also set up an incubation experiment with N-treated soil to investigate SOC decomposition under different treatments. Six-year N input led to overall increases in the soil nutrients (i.e., total N, ammonium-N (NH4+-N), and nitrite-N (NO3-N)), stimulation of plant growth (i.e., plant biomass, height, and density), enhancement of soil C storage (i.e., total carbon, SOC, dissolved organic carbon, and microbial biomass carbon), and decreases in the electrical conductivity (EC). The incubation experiment revealed that N input-induced SOC decomposition stimulation is Nform dependent; NO input was the strongest stimulator of decomposition, when compared to NH and NN input. The stimulation differences among the dominant-form N inputs increased with increasing N supply levels. Structural equation modeling (SEM) analysis indicated that the stimulation of SOC decomposition by N input was associated with N-related changes in the soil nutrients, vegetation, soil C storage, and soil environment. Together, these results aid the evaluation of soil C cycling under future N deposition scenarios in coastal wetlands. |
| Funding Organization | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Yellow River Delta Ecological Research Station of Coastal Wetland, CAS |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | PLANT-SPECIES DIVERSITY ; YELLOW-RIVER DELTA ; LITTER DECAY ; N DEPOSITION ; ADDITIONS ; RESPIRATION ; SALINITY ; FOREST ; FERTILIZATION ; TEMPERATURE |
| WOS Research Area | Geology ; Agriculture ; Water Resources |
| WOS ID | WOS:000566699000009 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.yic.ac.cn/handle/133337/28372 |
| Collection | 中科院海岸带环境过程与生态修复重点实验室 中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 |
| Corresponding Author | Han, Guangxuan |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Aarhus Univ, Aquat Biol, Dept Biosci, Ole Worms Alle 1, DK-8000 Aarhus C, Denmark 5.Ohio State Univ, Dept Geog, Columbus, OH 43210 USA 6.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China |
| Recommended Citation GB/T 7714 | Qu, Wendi,Han, Guangxuan,Eller, Franziska,et al. Nitrogen input in different chemical forms and levels stimulates soil organic carbon decomposition in a coastal wetland[J]. CATENA,2020,194:11. |
| APA | Qu, Wendi.,Han, Guangxuan.,Eller, Franziska.,Xie, Baohua.,Wang, Jian.,...&Zhao, Mingliang.(2020).Nitrogen input in different chemical forms and levels stimulates soil organic carbon decomposition in a coastal wetland.CATENA,194,11. |
| MLA | Qu, Wendi,et al."Nitrogen input in different chemical forms and levels stimulates soil organic carbon decomposition in a coastal wetland".CATENA 194(2020):11. |
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| Nitrogen input in di（2289KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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