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 | |
发表期刊 | CATENA |
ISSN | 0341-8162 |
2020-11-01 | |
卷号 | 194页码:11 |
关键词 | Nitrogen input Soil organic carbon decomposition Nitrogen chemical forms and levels Coastal wetland |
DOI | 10.1016/j.catena.2020.104672 |
通讯作者 | Han, Guangxuan(gxhan@yic.ac.cn) |
英文摘要 | 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. |
资助机构 | 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 |
收录类别 | SCI |
语种 | 英语 |
关键词[WOS] | PLANT-SPECIES DIVERSITY ; YELLOW-RIVER DELTA ; LITTER DECAY ; N DEPOSITION ; ADDITIONS ; RESPIRATION ; SALINITY ; FOREST ; FERTILIZATION ; TEMPERATURE |
研究领域[WOS] | Geology ; Agriculture ; Water Resources |
WOS记录号 | WOS:000566699000009 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.yic.ac.cn/handle/133337/28372 |
专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学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 |
通讯作者 | Han, Guangxuan |
作者单位 | 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 |
推荐引用方式 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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