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A Framework for Regional Agroecosystems Characterization Using the National Resources Inventory.

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This study maps agroecosystem changes in the Midwest using the National Resources Inventory (NRI). It reveals significant land conversion, impacting natural vegetation and water quality, highlighting the need for sustainable agricultural practices.

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Area of Science:

  • Agroecology
  • Environmental Science
  • Agricultural Science

Background:

  • Agriculture significantly modifies natural resources, impacting ecosystems.
  • Understanding these modifications is crucial for sustainable land management.
  • The Midwest region faces challenges in balancing agricultural productivity with resource conservation.

Purpose of the Study:

  • To spatially analyze agroecosystem characteristics using an agroecological framework.
  • To assess the extent of natural resource modification for agriculture in the Midwest.
  • To identify areas needing resource mitigation and policy intervention.

Main Methods:

  • Utilized an agroecological framework to examine agriculture-natural resource relations.
  • Employed spatial representation of agroecosystem characteristics via the National Resources Inventory (NRI).
  • Spatially aggregated natural resource and anthropogenic variables to map regional variability.

Main Results:

  • Over 70% of the Midwest is dedicated to crops and pasture, with natural vegetation often below 10%.
  • Extensive drainage systems (over 35% in some areas) have led to wetland loss and water quality degradation.
  • Irrigation practices impact natural ecosystems and increase agrichemical leaching risks, while erosion poses a long-term productivity threat.

Conclusions:

  • An agroecosystem framework effectively visualizes resource modification and degradation.
  • This approach aids in identifying critical areas for resource mitigation and targeted research.
  • It supports the development of policies to improve off-site damage and sustain agriculture and natural resources.