Barrons AP Environmental Science

(B) Alley cropping is used to enhance or diversify farm products, reduce
surface water runoff and erosion, improve the utilization of nutrients, reduce
wind erosion, modify the microclimate for improved crop production, and
improve wildlife habitat. Hardwood trees, like walnut, oak, ash, and pecan,
are favored species in alley cropping systems and can potentially provide
high-value lumber.