INTRODUCTION TO SPECIAL ISSUE ON HYDROLOGIC AND GEOMORPillC EFFECTS OF FOREST ROADS

Roads have been a part of human landscapes for more than 40 centuries. During the 20th century, technological advances have increased our ability to construct new roads at unprecedented rates and into steeper terrain. In the last half of that century, an extensive network of roads has been constructed in forests and other wildlands to facilitate use and management of natural resources. They are the transportation system that allows transport of timber and minerals from forests and access for recreationists, land managers, fire