Soil quality has long been considered in terms of its measurable physical and chemical attributes. Recent advances in technologies and methods for soil biology have allowed the field of soil health to become increasingly meaningful. Soil health is defined as “the continued capacity of soil to function as a vital living ecosystem that sustains plants, animals, and humans.” Healthy soils contribute to a range of ecosystem functions as appropriate to the environment, such as sustaining plant and animal productivity and biodiversity, maintaining or enhancing air and water quality, and supporting human health and habitation.