Functional keystone taxa promote N and P removal of the constructed wetland to mitigate agricultural nonpoint source pollution

被引：16

作者：

Fan, Huixin ^{[1
]}

Huang, Zhongliang ^{[1
]}

Feng, Chongling ^{[2
]}

Wu, Zijian ^{[1
]}

Tian, Yuxin ^{[1
]}

Ma, Fengfeng ^{[1
]}

Li, Hui ^{[1
]}

Huang, Jing ^{[1
]}

Qin, Xiaoli ^{[1
]}

Zhou, Zhou ^{[2
]}

Zhang, Xuan ^{[1
,3
,4
]}

机构：

[1] Hunan Acad Forestry, State Key Lab Utilizat Woody Oil Resource, Changsha 410004, Hunan, Peoples R China

[2] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, 498 South Shaoshan Rd, Changsha 410004, Peoples R China

[3] 658 South Shaoshan Rd, Changsha 410004, Hunan, Peoples R China

[4] Hunan Acad Forestry, Changsha, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 912卷

基金：

中国国家自然科学基金;

关键词：

Returning farmlands to wetlands; Agricultural nonpoint source pollution; Functional keystone taxa; Nitrogen removal; Phosphorus removal; TRANSLOCATION; BACTERIAL;

D O I：

10.1016/j.scitotenv.2023.169155

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Characterized by irregular spatial and temporal variations of pollutant loading and complex occurrence mechanisms, agricultural nonpoint source pollution (ANPSP) has always been a great challenge in field restoration worldwide. Returning farmlands to wetlands (RFWs) as an ecological restoration mode among various con-structed wetlands was selected to manage ANPSP in this study. Triarrhena lutarioriparia, Nelumbo nucifera and Zizania latifolia monocultures were designed and the water pollutants was monitored. N. nucifera and Z. latifolia could reach the highest TN (53.28 %) and TP (53.22 %) removal efficiency, respectively. By 16s high-throughput sequencing of rhizosphere bacteria, 45 functional species were the main contributors for efficient N and P removal, and 38 functional keystone taxa (FKT) were found with significant ecological niche roles and metabolic functions. To our knowledge, this is the first study to explore the microbial driving N and P removal mechanism in response to ANPSP treated by field scale RFWs.

引用

页数：13

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