Soil Salinity and Moisture Control the Processes of Soil Nitrification and Denitrification in a Riparian Wetlands in an Extremely Arid Regions in Northwestern China
文献类型：期刊论文
| 作者 | Meng, Yangyang1,2; He, Zhibin2; Liu, Bing2; Chen, Longfei2; Lin, Pengfei2; Luo, Weicheng2 |
| 刊名 | WATER
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 12期号:10页码:14 |
| 关键词 | soil salinity soil moisture soil nitrification and denitrification riparian wetland extremely arid region |
| DOI | 10.3390/w12102815 |
| 通讯作者 | He, Zhibin(hzbmail@lzb.ac.cn) |
| 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. |
| WOS关键词 | COMMUNITY ; BACTERIAL ; COASTAL ; MINERALIZATION ; ENVIRONMENT ; CATCHMENT ; SEDIMENTS ; RATES ; WATER |
| 资助项目 | National Key Research and Development Program of China[2017YFC0504306] ; National Natural Science Foundation of China[41771038] ; National Natural Science Foundation of China[41807150] ; National Natural Science Foundation of China[41630861] |
| WOS研究方向 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000586970000001 |
| 出版者 | MDPI |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156635]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | He, Zhibin |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.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 |
| 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]. WATER,2020,12(10):14. |
| 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),14. |
| 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):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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