Artificial ponds as hotspots of nitrogen removal in agricultural watershed
文献类型：期刊论文
| 作者 | Cai, Min2; Li, Shuai2; Ye, Fei2; Hong, Yiguo2; Lu, Mingquan3; Op den Camp, Huub J. M.1; Wang, Yu2 |
| 刊名 | BIOGEOCHEMISTRY
 |
| 出版日期 | 2022-04-21 |
| 页码 | 19 |
| ISSN号 | 0168-2563 |
| 关键词 | Artificial pond Agricultural watershed Nutrient Nitrogen removal Nitrous oxide |
| DOI | 10.1007/s10533-022-00928-6 |
| 通讯作者 | Wang, Yu(wangyu@gzhu.edu.cn) |
| 英文摘要 | Small waters, like ponds, are the most abundant freshwater environments, and are increasingly recognized for their function in ecosystem service delivery. In agricultural watershed, artificial ponds play an essential role in reducing nitrogen pollution. However, until now artificial ponds remain the least investigated part of water environments. The importance of microbial activities has seldom been discussed, which makes the microbial pathways and processes rates in nitrogen removal poorly understood. To illustrate the role of artificial ponds in microbial nitrogen removal in agricultural watersheds, 21 pond sediments and 11 soils are collected in an agricultural watershed of China. Results show that surface sediments in ponds carry significantly higher dissolved inorganic nitrogen (9.1-21.9 mg/kg) and total organic matter (64.8-113.0 g/kg) compared to the surrounding agricultural soils. High rates of microbial nitrogen removal in ponds (12.4-25.5 nmol N g(-1) h(-1)) are observed, which are 2-9 times higher than those in dryland soils. In pond sediments, denitrification dominates (> 90% N-loss) the microbial nitrogen removal process with only a minor contribution of anaerobic ammonium oxidation. A high potential of N2O production (up to 9.4 nmol N g(-1) h(-1)) occurs in ponds along with the rapid nitrogen removal. For denitrifier genes, nir gene are always more abundant than nosZ gene. Additionally, the nirS gene is more abundant under flooded conditions, while nirK gene prefers higher dissolved oxygen and NO3- in drylands. These findings highlight the ecosystem function of ponds in agricultural watersheds, and provide new ideas on pollution control and global nitrogen cycling. |
| 资助项目 | National Natural Science Foundation of China[41977153] ; National Natural Science Foundation of China[51908145] ; National Natural Science Foundation of China[31870100] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000784638900001 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15598]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Wang, Yu |
| 作者单位 | 1.Radboud Univ Nijmegen, Dept Microbiol, RIBES, Nijmegen, Netherlands 2.Guangzhou Univ, Inst Environm Res Greater Bay Area, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Min,Li, Shuai,Ye, Fei,et al. Artificial ponds as hotspots of nitrogen removal in agricultural watershed[J]. BIOGEOCHEMISTRY,2022:19. |
| APA | Cai, Min.,Li, Shuai.,Ye, Fei.,Hong, Yiguo.,Lu, Mingquan.,...&Wang, Yu.(2022).Artificial ponds as hotspots of nitrogen removal in agricultural watershed.BIOGEOCHEMISTRY,19. |
| MLA | Cai, Min,et al."Artificial ponds as hotspots of nitrogen removal in agricultural watershed".BIOGEOCHEMISTRY (2022):19. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。