干旱区生态环境知识资源中心(Arid): Soil Salinity and Moisture Control the Processes of Soil Nitrification and Denitrification in a Riparian Wetlands in an Extremely Arid Regions in Northwestern China

Arid

DOI	10.3390/w12102815
	Soil Salinity and Moisture Control the Processes of Soil Nitrification and Denitrification in a Riparian Wetlands in an Extremely Arid Regions in Northwestern China
	Meng, Yangyang; He, Zhibin; Liu, Bing; Chen, Longfei; Lin, Pengfei; Luo, Weicheng
通讯作者	He, ZB
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:10
英文摘要	Soil nitrification and denitrification are key nitrogen (N) removal processes in riparian wetlands in extremely arid regions, but the driving factors of the two N processes in these wetlands are still unclear. We measured soil nitrification and denitrification rates and related environmental properties in a typical riparian wetland in the middle reaches of the Heihe River, northwestern China. Our results showed that rates of soil nitrification and denitrification exhibited moderate variability, ranging from 52.77 to 221.18 mu g kg(-1) h(-1) and 91.25 to 428.26 mu g kg(-1) h(-1), respectively. Soil salinity was high, with mean electrical conductivity (EC) of 6.8 mS cm(-1). Soil salinity and moisture were the key factors influencing nitrification and denitrification in this riparian wetland in an extremely arid region. Soil salinity exerted significant inhibitory impact on soil nitrification when EC was > 4.05 mS cm(-1). Soil nitrification increased with an increase in soil moisture when soil water content < 27.03% and decreased with an increase in soil moisture when soil water content > 27.03%. Denitrification had a significantly negative relationship with soil salinity, and significantly positive relationship with soil moisture. The interaction of soil salinity and moisture played a central role in regulating soil denitrification. Based on these results, we propose that water consumption of riparian wetlands, and the planting of halophytes, should be increased to reduce soil salinity and increase soil moisture, which is essential for sustaining soil N removal function in riparian wetlands in extremely arid regions.
英文关键词	soil salinity soil moisture soil nitrification and denitrification riparian wetland extremely arid region
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000586970000001
WOS关键词	COMMUNITY ; BACTERIAL ; COASTAL ; MINERALIZATION ; ENVIRONMENT ; CATCHMENT ; SEDIMENTS ; RATES ; WATER
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327382
作者单位	[Meng, Yangyang; He, Zhibin; Liu, Bing; Chen, Longfei; Lin, Pengfei; Luo, Weicheng] Chinese Acad Sci, Linze Inland River Basin Res Stn, Chinese Ecosyst Res Network, Key Lab Ecohydrol Inland River Basin,Northwest In, Lanzhou 730000, Peoples R China; [Meng, Yangyang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Meng, Yangyang,He, Zhibin,Liu, Bing,et al. Soil Salinity and Moisture Control the Processes of Soil Nitrification and Denitrification in a Riparian Wetlands in an Extremely Arid Regions in Northwestern China[J],2020,12(10).
APA	Meng, Yangyang,He, Zhibin,Liu, Bing,Chen, Longfei,Lin, Pengfei,&Luo, Weicheng.(2020).Soil Salinity and Moisture Control the Processes of Soil Nitrification and Denitrification in a Riparian Wetlands in an Extremely Arid Regions in Northwestern China.WATER,12(10).
MLA	Meng, Yangyang,et al."Soil Salinity and Moisture Control the Processes of Soil Nitrification and Denitrification in a Riparian Wetlands in an Extremely Arid Regions in Northwestern China".WATER 12.10(2020).