YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
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
Source PublicationCATENA
ISSN0341-8162
2020-11-01
Volume194Pages:11
KeywordNitrogen input Soil organic carbon decomposition Nitrogen chemical forms and levels Coastal wetland
DOI10.1016/j.catena.2020.104672
Corresponding AuthorHan, Guangxuan(gxhan@yic.ac.cn)
AbstractNitrogen (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 OrganizationStrategic 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 BySCI
Language英语
WOS KeywordPLANT-SPECIES DIVERSITY ; YELLOW-RIVER DELTA ; LITTER DECAY ; N DEPOSITION ; ADDITIONS ; RESPIRATION ; SALINITY ; FOREST ; FERTILIZATION ; TEMPERATURE
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS IDWOS:000566699000009
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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 AuthorHan, Guangxuan
Affiliation1.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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