中文 Contact
  • About CAAS
    Introduction
    Mission & Vision
    Leadership
    CAAS In Numbers
    Organization
  • Newsroom
    Focus News
    Latest News
    Research Updates
    Bulletins
  • Research & Innovation
    Major Achievements
    Research Areas
    Facilities
    ASTIP
    Innovation Teams
  • International Cooperation
    Partners
    Platforms
    Initiatives
  • Join Us
    Talent Recruitment
    Career Opportunities
    Postgraduate Education
  • Media
    Annual Report
    Video
    CAAS in Media
    Journal
Back CAAS 中文 Contact
  • About CAAS
    Introduction
    Mission & Vision
    Leadership
    CAAS In Numbers
    Organization
  • Newsroom
    Focus News
    Latest News
    Research Updates
    Bulletins
  • Research & Innovation
    Major Achievements
    Research Areas
    Facilities
    ASTIP
    Innovation Teams
  • International Cooperation
    Partners
    Platforms
    Initiatives
  • Join Us
    Talent Recruitment
    Career Opportunities
    Postgraduate Education
  • Media
    Annual Report
    Video
    CAAS in Media
    Journal

Newsroom

Home- Newsroom- Research Updates
Home- Newsroom- Research Updates
分享到

Study reveals the effects of the co-transport mechanism of soil colloids and extracellular enzymes on nitrogen loss in hydrological processes

小 中 大
Source : Institute of Environment and Sustainable Development in Agriculture

Recently, the Innovation Team for Agricultural Clean Watershed at the Institute of Environment and Sustainable Development in Agriculture, CAAS, took a deep dive into the effects of soil colloids and extracellular enzymes on soil nitrogen loss in hydrological paths, and revealed the differential co-transport mechanisms of soil colloids and extracellular enzymes in surface runoff and subsurface flow during nitrogen loss in sloping farmland. The related findings were published in Geoderma, a leading international journal of soil science.

Extracellular enzymes and soil colloids play an important role in nitrogen transformation and migration. The study confirmed that co-transport phenomenon exists between extracellular enzymes and soil colloids during hydrological processes, and this co-transport process significantly affects nitrogen loss. In surface runoff, the migration of extracellular enzymes is primarily influenced by fine particle colloids, while in subsurface flow, it results from the combined effects of both coarse and fine particle colloids. The significant differences in soil colloid concentration and extracellular enzyme activity lead to differential responses of nitrogen load in surface runoff and subsurface flow. The co-transport process of soil colloids and extracellular enzymes significantly affects nitrogen loss, explaining 95% and 55% of the differences in nitrogen loss paths in surface runoff and subsurface flow, respectively.

1_副本.png

 

This study explored the co-transport mechanisms of soil colloids and extracellular enzymes in nitrogen loss through different hydrological paths after erosive rainfall. It systematically assessed the influence mechanism of the stoichiometric characteristics of soil colloids and enzymes on soil nitrogen transfer process in different hydrological paths, providing new insights into the micro-mechanisms of soil nitrogen loss from eroded slopes and the prevention and control of non-point source pollution.

This study was funded by the National Natural Science Foundation of China (41977072) and the National Key R&D Program of China (SQ2023YFD1900062).

Linkage:https://doi.org/10.1016/j.geoderma.2024.117041

Latest News
  • Sep 30, 2024
    China-Laos Training Workshop on Integrated Management of Major Crop Pests and Diseases Concludes Successfully in Laos
  • Sep 26, 2024
    IARRP's AI project research achievement wins the Excellence Award at the Big Data Expo
  • Sep 11, 2024
    2024 International Apicultural Asia Regional Symposium Held in Beijing
  • Sep 11, 2024
    Sino-German Conference on Innovative Approaches for Agriculture and Food System Held in Chengdu
  • Sep 10, 2024
    The Institute of Feed Research Joined the FAO LEAP Partnership
  • About CAAS
    Introduction
    Mission & Vision
    Leadership
    CAAS In Numbers
    Organization
  • Newsroom
    Focus News
    Latest News
    Research Updates
    Bulletins
  • Research & Innovation
    Major Achievements
    Research Areas
    Facilities
    ASTIP
    Innovation Teams
  • International Cooperation
    Partners
    Platforms
    Initiatives
  • Join Us
    Talent Recruitment
    Career Opportunities
    Postgraduate Education
  • Media
    Annual Report
    Video
    CAAS in Media
    Journal

Links

Ministry of Agriculture and Rural Affairs of the People's Republic of China
Giving to CAAS

CAAS

Copyright © 2023 Chinese Academy of Agricultural Sciences京ICP备10039560号-5 京公网安备11940846021-00001号

No.12 Zhongguancun South Street, Haidian District, Beijing, P.R.China

www.caas.cn/en/

diccaas@caas.cn

Top