您好，欢迎访问中国热带农业科学院 机构知识库！
中国热带农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Fertilization regime shifts the molecular diversity and chlorine reactivity of soil dissolved organic matter from tropical croplands

文献类型： 外文期刊

作者： Du, Ling 1 ; Liu, Yanmei 1 ; Hao, Zhineng 1 ; Chen, Miao 3 ; Li, Liping 4 ; Ren, Dong 1 ; Wang, Junjian 5 ;

作者机构： 1.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637009, Peoples R China

2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing, Peoples R China

3.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou 571101, Peoples R China

4.Beijing Normal Univ, Adv Inst Nat Sci, Res & Dev Ctr Watershed Environm Ecoengn, Zhuhai 519087, Peoples R China

5.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Peoples R China

6.China West Normal Univ, Chem Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637009, Peoples R China

关键词： Dissolved organic matter; Fertilization; Straw return; Croplands; Molecular diversity; Chlorine reactivity

期刊名称：WATER RESEARCH （ 影响因子：13.4； 五年影响因子：13.847 ）

ISSN： 0043-1354

年卷期： 2022 年 225 卷

页码：

收录情况： SCI

摘要： Soil-derived dissolved organic matter (SDOM) is an important site-specific disinfection byproduct (DBP) pre-cursor in watersheds. However, it remains unclear how fertilization regime shifts the molecular diversity and chlorine reactivity of SDOM in cropland-impacted watersheds. Here, we analyzed the spectroscopic and molecular-level characteristics of the SDOM from croplands that had different fertilization regimes (i.e., non -fertilization, chemical fertilization, straw return, and chemical fertilization plus straw return) for 5 years and evaluated the chlorine reactivity of the SDOM by determining the 24-h chlorine consumption and specific DBP formation potential (SDBP-FP). The SDOM level decreased by chemical fertilization and was not significantly altered by straw return alone or combined with chemical fertilizer. However, all fertilization regimes elevated the molecular diversity of SDOM by increasing the abundance of protein-, lignin-, and tannin-like compounds. The chlorine reactivity of SDOM was reduced by chemical fertilization, but was significantly increased by straw return. Typically, straw return increased the formation potential of specific trihalomethane and chloral hydrate by 339% and 56% via increasing the aromatics in SDOM, whereas chemical fertilization could effectively decrease about 231% of the increased specific trihalomethane formation potential caused by straw return. This study highlights that fertilization regime can significantly shape the molecular diversity and chlorine reactivity of the SDOM in croplands and that partially replacing chemical fertilizer with crop straw is an advantageous practice for reducing DBP risks in drinking water in cropland-impacted watersheds.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国热带农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台