Parameter Tree:
EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > URBAN LANDS

Definition:
Areas that have been altered or obstructed by humans, especially by
structures relating to cities. 


Reference:
Glossary of Soil Science Terms
HREF=http://www.soils.org/sssagloss/browse.html target="_blank">
http://www.soils.org/sssagloss/browse.html