报 告 人：沙之敏     资源与环境系   副研究员

时    间：2021年10月13日 (星期三) 12:40-14:00

地    点：农生学院创新楼（B楼）104会议室

主办单位：农生学院学科与科技办、农生学院青年教师联谊会

报告题目：农业源氨挥发减排技术研究进展

 

 

 

报告摘要：

氨（NH₃）是参与大气氮循环的关键成分之一，对二次气溶胶形成、温室效应和水体富营养化等环境问题均有直接或间接影响。我国种植业、畜牧业氨排放量大，高排放区与大气严重污染区高度重叠，也是导致雾霾的重要原因之一。因此，了解氨排放源及排放特征、获取准确的排放系数并开展农业源大气氨减排工作紧急迫切、意义重大。本次报告将针对我国种植业氮肥用量过大、氨氮肥比例过高、施肥方式不合理；畜牧业圈舍粪便管理粗放、还田技术落后所导致的氨排放问题，分别从大气氨监测方法、氨排放主要影响因素和目前主要的氨减排技术进行介绍，并就课题组开展的相关工作进行探讨。

报告人简介：

2013年获北海道大学博士学位，2014-2016年在上海交通大学农业与生物学院进行博士后研究，2017年1月入职。

【PI学科组研究方向】：

稻田生态系统碳氮循环。主要研究方向如下：

（1）水稻根际氮磷等元素行为与调控机制 

（2）基于根际调控的养分高效利用技术

（3）生态种养技术与面源污染防控

 

【代表性著作】： 

1. Kaikai Fang , Wei Dai , Huiyan Chen , Jun Wang , Hui Gao , Zhimin Sha*, Linkui Cao*, 2021. The effect of integrated rice–frog ecosystem on rice morphological traits and methane emission from paddy fields. Science of the Total Environment, 783：147123
2. Fang K K, Gao H, Sha Z M *, Linkui Cao*, 2021. Mitigating global warming potential with increase net ecosystem economic budget by integrated rice-frog farming in eastern China. Agric. Ecosyst. Environ. 308, 107235.
3. Zhimin Sha, Zheng Chen, Yanfang Feng, Lihong Xue, Linzhang Yang, Linkui Cao, Qingnan Chu, 2020. Minerals loaded with oxygen nanobubbles mitigate arsenic translocation from paddy soils to rice. Journal of Hazardous Materials, 398: 122818

 

ACADEMIC SALON (XXVI)

SPEAKER: Zhimin Sha

Associate Professor

Department of Resource and Environment, SAB

TIME ：12:40-14:00  Oct.13, 2021

VENUE：Room 104, Building B, SAB

ORGANIZER：Office of Discipline and Science & Technology, SAB;

Young Teachers Association, SAB

TITLE：Research progress on reduction technology of ammonia emission from agricultural sources

ABSTRACT：

Ammonia (NH₃) is one of the key components involved in the atmospheric nitrogen cycle. The overabundance of NH₃ is suggested to promote the formation of secondary ammoniated aerosol particles, greenhouse effect and water eutrophication. High ammonia emissions from agricultural source in China became one of the most important reasons of haze. Therefore, it is urgent to understand ammonia emission sources and emission characteristics, obtain accurate emission coefficient and carry out effective measures to reduce the ammonia emission from agricultural sources.         

This report will focus on the NH₃ emission from agricultural source in China resulted from inappropriate management of nitrogen fertilizer and livestock waste. The monitoring methods, environmental factors and reduction technology of ammonia emission will be addressed and discussed.