Snow Avalanche, Landslide, Debris Flow Prediction and Control AN APPROACH TO EVALUATING THE LONG-TERM EFFECTS OF LAND USE ON LANDSLIDES, EROSION, AND STREAM CHANNELS

There is world-wide concern that environmental quality is becoming increasingly degraded by the accumulation of multiple human activities. This has become a particularly thorny scientific, legal, and political issue, Concerns of human activities such as pollutant discharges at point sources can first be identified and then regulated directly. However, when there are many and widely dispersed point discharges, such as automobile emissions, even when the level of individual emissions is reduced, the total emission from many automobiles can produce a "cumulative effect" that degrades air quality below acceptable levels.