4.6 Article

Combining Tools from Edge-of-Field to In-Stream to Attenuate Reactive Nitrogen along Small Agricultural Waterways

期刊

WATER
卷 12, 期 2, 页码 -

出版社

MDPI
DOI: 10.3390/w12020383

关键词

agricultural drainage ditch; denitrifying bioreactor; catchment management; nitrate-nitrogen; precision conservation; riparian buffer; stream rehabilitation

资金

  1. Mackenzie Charitable Foundation as part of the Canterbury Waterway Rehabilitation Experiment (CAREX)
  2. University of Canterbury
  3. New Zealand's Biological Heritage Science Challenge Project 3.4: Reigniting healthy resilience
  4. NIWA as a Strategic Science Investment
  5. SMARTer Riparian & Wetland Strategies Research Programme

向作者/读者索取更多资源

Reducing excessive reactive nitrogen (N) in agricultural waterways is a major challenge for freshwater managers and landowners. Effective solutions require the use of multiple and combined N attenuation tools, targeted along small ditches and streams. We present a visual framework to guide novel applications of 'tool stacking' that include edge-of-field and waterway-based options targeting N delivery pathways, timing, and impacts in the receiving environment (i.e., changes in concentration or load). Implementing tools at multiple locations and scales using a 'toolbox' approach will better leverage key hydrological and biogeochemical processes for N attenuation (e.g., water retention, infiltration and filtering, contact with organic soils and microbes, and denitrification), in addition to enhancing ecological benefits to waterways. Our framework applies primarily to temperate or warmer climates, since cold temperatures and freeze thaw-related processes limit biologically mediated N attenuation in cold climates. Moreover, we encourage scientists and managers to codevelop N attenuation toolboxes with farmers, since implementation will require tailored fits to local hydrological, social, and productive landscapes. Generating further knowledge around N attenuation tool stacking in different climates and landscape contexts will advance management actions to attenuate agricultural catchment N. Understanding how different tools can be best combined to target key contaminant transport pathways and create activated zones of attenuation along and within small agricultural waterways will be essential.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据