Download Free Water Yield Increased From Partial Clearcutting Of Forested Watershed Book in PDF and EPUB Free Download. You can read online Water Yield Increased From Partial Clearcutting Of Forested Watershed and write the review.

The purpose of this research paper is to present some of the methods by which water yields can be increased from forested watersheds and to discuss the effectiveness of these methods under different conditions. Methods discussed include clearcutting, partial cutting, and use of herbicides. Effectiveness during drought is considered. Effects on water yield of reforestation, forest protection, and forest fire and other destructive agencies are discussed. And finally, safeguards for water quality are considered.
The hydrologic response of small clearcuts on north and south slopes in northern Idaho was investigated. On the north slope, substantial gains (27 to 35 cm) in potential water yield per year resulted from (a) removal of transpiring surfaces associated with plant cover, (b) elimination of snow interception by a closed-canopied forest, and (C) delayed reoccupation of the soil mantle by invading herbaceous species. On the south slope, small to moderate gains (4 to 11 em) in yield resulted from clearcutting, at least in 1973, the year studied.
A long-term study of the effects of clearcutting on forest and stream ecosystems.
Of all the outputs of forests, water may be the most important. Streamflow from forests provides two-thirds of the nation's clean water supply. Removing forest cover accelerates the rate that precipitation becomes streamflow; therefore, in some areas, cutting trees causes a temporary increase in the volume of water flowing downstream. This effect has spurred political pressure to cut trees to increase water supply, especially in western states where population is rising. However, cutting trees for water gains is not sustainable: increases in flow rate and volume are typically short-lived, and the practice can ultimately degrade water quality and increase vulnerability to flooding. Forest hydrology, the study of how water flows through forests, can help illuminate the connections between forests and water, but it must advance if it is to deal with today's complexities, including climate change, wildfires, and changing patterns of development and ownership. This book identifies actions that scientists, forest and water managers, and citizens can take to help sustain water resources from forests.
This literature review highlights the results for over 600 documents describing studies conducted to evaluate the impacts of manipulating forest vegetation on water yield and quality. The review is divided into three major sections covering the influences of forest practices on the physical and chemical properties of water, including both land treatment effects and vegetation effects; pertinent components of water resource management, including plant water requirements, fertilizer treatments, air pollutants, ground cover, and water quality; and economic considerations such as water markets, water rights, and valuation of water as a forest product. On-going research is also listed.