干旱区生态环境知识资源中心(Arid): Soil properties mediate the freeze-thaw-related soil N2O and CO2 emissions from temperate grasslands

Arid

DOI	10.1016/j.catena.2020.104797
	Soil properties mediate the freeze-thaw-related soil N2O and CO2 emissions from temperate grasslands
	Wu, Xing; Li, Ting; Wang, Dongbo; Wang, Fangfang; Fu, Bojie; Liu, Guohua; Lv, Yihe
通讯作者	Wu, X
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	195
英文摘要	Freeze-thaw cycles (FTCs) may affect soil carbon (C) and nitrogen (N) cycling and thus stimulate greenhouse gas emissions in cold regions. However, the dynamics of these gases in response to FTCs, especially for N2O, vary substantially due to the differences in soil properties. We conducted an incubation study to investigate the effects of soil properties from different land cover types (arid steppe, AS; typical steppe, TS; meadow steppe, MS; and marshland, ML) on the N2O and CO2 emissions during three FTCs from temperate grasslands in Northeast China. Our results showed that the freeze-thaw-related soil N2O and CO2 emissions differ significantly among different land cover types. Significant increases in N2O emissions during FTCs were observed from the MS, ML, and TS soils, but not from AS soils, which indicated that threshold values of some key soil properties might exist triggering N2O pulse emissions during thawing. Furthermore, AS soil cores were amended with deionized water, glucose-C and NO3--N, respectively, to identify the crucial factors for N2O emissions during FTCs. The significantly increased N2O emissions from AS soils after amendments with water and/or nutrients confirmed that soil organic carbon (SOC), NO3- and water content might be the limiting factors influencing the N2O Semissions from AS soils during FTCs. In addition to soil substrates and moisture, our results suggest that the soil texture and bulk density significantly impact N2O and CO2 emissions during FTCs. Stepwise multiple regression analysis showed that TN coupled with the soil WFPS and sand content could explain 95% of the spatial variability in N2O fluxes, and 75% of the variations in CO2 fluxes were related to the SOC and clay contents. Thus, our results indicate that the interactions between soil properties and FTCs in various ecosystems are important for predicting regional and global greenhouse gas balances, especially in cold regions.
英文关键词	Soil properties Freeze-thaw cycles Nitrous oxide Carbon dioxide Temperate grassland
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000580366300045
WOS关键词	NITROUS-OXIDE EMISSIONS ; CARBON-DIOXIDE ; SPRING-THAW ; DIFFERENT ECOSYSTEMS ; GAS FLUXES ; CYCLES ; DENITRIFICATION ; RESPONSES ; FOREST ; NITRIFICATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326964
作者单位	[Wu, Xing; Li, Ting; Wang, Fangfang; Fu, Bojie; Liu, Guohua; Lv, Yihe] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China; [Wu, Xing; Li, Ting; Wang, Fangfang; Fu, Bojie; Liu, Guohua; Lv, Yihe] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Dongbo] Hulunbuir Ecoenvironm Monitoring Ctr Inner Mongol, Hulunbuir 021008, Peoples R China; [Fu, Bojie] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Wu, Xing,Li, Ting,Wang, Dongbo,et al. Soil properties mediate the freeze-thaw-related soil N2O and CO2 emissions from temperate grasslands[J]. 北京师范大学,2020,195.
APA	Wu, Xing.,Li, Ting.,Wang, Dongbo.,Wang, Fangfang.,Fu, Bojie.,...&Lv, Yihe.(2020).Soil properties mediate the freeze-thaw-related soil N2O and CO2 emissions from temperate grasslands.CATENA,195.
MLA	Wu, Xing,et al."Soil properties mediate the freeze-thaw-related soil N2O and CO2 emissions from temperate grasslands".CATENA 195(2020).