Drying-rewetting cycles alter carbon and nitrogen mineralization in litter-amended alpine wetland soil
Gao, JQ; Feng, J; Zhang, XW; Yu, FH; Xu, XL; Kuzyakov, Y
2016
Source PublicationCATENA
ISSN0341-8162
Volume145Pages:285-290
AbstractWetting-drying cycles can influence decomposition of litter and soil organic carbon (SOC) and their mineralization, but such effects have seldom been explored in alpine wetland soils. We conducted a 120-day incubation experiment with alpine wetland soils to which we added litter or not. These soil samples were assigned to two constant moisture treatments (60% or 100% soil water-holding capacity, WHC) or to a wetting-drying treatment that cycled between 60% and 100% WHC. Drying-rewetting cycles significantly accelerated carbon (C) mineralization and nitrogen (N) immobilization compared to soil under saturated soil moisture conditions. Litter addition greatly increased C mineralization and N immobilization, but the intensity of mineralization was regulated by soil moisture through microbial biomass. A significantly negative relationship between C and N mineralization became more pronounced when litter was added. Thus, drying-rewetting cycles can alter C and N mineralization, and this effect can strongly depend on litter in alpine wetlands. This indicates that future climate change could affect C stocks in alpine wetland soil through altering moisture and litter production. (C) 2016 Elsevier B.V. All rights reserved.
SubtypeJournal
KeywordAlpine wetland C mineralization Drying-rewetting cycles Litter addition N mineralization Soil organic C
Subject AreaGeology ; Agriculture ; Water Resources
WOS Subject ExtendedGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS KeywordFIELD CONDITIONS ; WETTING CYCLES ; FOREST SOIL ; MEADOW SOIL ; CO2 EFFLUX ; DECOMPOSITION ; RESPIRATION ; TEMPERATURE ; AVAILABILITY ; FUMIGATION
Indexed BySCI
Language英语
WOS IDWOS:000382342100027
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44180
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Gao, JQ,Feng, J,Zhang, XW,et al. Drying-rewetting cycles alter carbon and nitrogen mineralization in litter-amended alpine wetland soil[J]. CATENA,2016,145:285-290.
APA Gao, JQ,Feng, J,Zhang, XW,Yu, FH,Xu, XL,&Kuzyakov, Y.(2016).Drying-rewetting cycles alter carbon and nitrogen mineralization in litter-amended alpine wetland soil.CATENA,145,285-290.
MLA Gao, JQ,et al."Drying-rewetting cycles alter carbon and nitrogen mineralization in litter-amended alpine wetland soil".CATENA 145(2016):285-290.
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