Evaluating Agricultural BMP Effectiveness in Improving Freshwater Provisioning Under Changing Climate

Ping Li, Rebecca Muenich, Indrajeet Chaubey, Xiaomei Wei

Research output: Contribution to journalArticle

Abstract

Freshwater provisioning (FWP) is a critical ecosystem service that is highly affected by climate change/variability as well as land use/land management. Agricultural best management practices (BMPs) are implemented to mitigate the adverse impacts of intensive agricultural production on flow and water quality, thus can potentially protect and improve FWP services. Many studies have assessed BMP effectiveness for improving hydrology/water quality, however the impact of climate changes on BMP effectiveness for protecting FWP is poorly understood. In this study, changes in FWP under 5 BMPs and 6 projected climate change/variability scenarios, were quantified. The Soil and Water Assessment Tool was used to quantify FWP services for baseline (1975–2004) and future climates (2021–2050). We then assessed the climate change impacts on BMP effectiveness for 13 watersheds in the Upper Mississippi River Basin. The results indicated that all 5 BMP scenarios behaved similarly under the historical and future climates, generally resulting in improved FWP services compared to the baseline agricultural management. The combined BMPs was the most effective way to enhance FWP. No-tillage and cover crops performed well in improving FWP in agriculturally-dominated watersheds, while filter strips and grassed waterways had high effectiveness in non-agriculturally dominated watersheds. Results for the climate scenarios indicate that 5 BMPs under future climate were still effective compared to baseline. The increased precipitation and rising temperatures generally improved BMP effectiveness in maintaining and improving FWP services, due to increased freshwater availability under the projected future climate.

Original languageEnglish (US)
JournalWater Resources Management
DOIs
StateAccepted/In press - Jan 1 2018

Fingerprint

best management practice
climate
Climate change
Watersheds
climate change
watershed
Water quality
water quality
agricultural management
cover crop
zero tillage
Hydrology
ecosystem service
agricultural production
land management
Land use
Catchments
Ecosystems
Crops
hydrology

Keywords

  • Ecosystem service
  • Streamflow
  • SWAT
  • Water quality

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology

Cite this

Evaluating Agricultural BMP Effectiveness in Improving Freshwater Provisioning Under Changing Climate. / Li, Ping; Muenich, Rebecca; Chaubey, Indrajeet; Wei, Xiaomei.

In: Water Resources Management, 01.01.2018.

Research output: Contribution to journalArticle

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