ABSTRACT
The use of GIS in concert with simple or complex simulation modeling provides an unparalleled way to generate new data and to help a variety of audiences understand spatial patterns of data. From improved understanding, policy incentives can be crafted to reduce adverse environmental impacts of agricultural production at lower costs than would be necessary otherwise. In this chapter, two case studies demonstrate how GIS and modeling can be used to understand how crop selection and soils interact to effect environmental outcomes across an agricultural landscape.
23.1 Executive Summary ...................................................................................... 395 23.2 Introduction .................................................................................................. 396 23.3 Case Study 1: Estimating Nonpoint Nitrate Flux into a Shallow Aquifer .... 396
