Abstract
The vegetation of any watershed is a vital factor in regulation of streamflow and prevention of excessive erosion (Ayres, '36). This is particularly true in southern California where large populations live at the foot of steep mountains whose streams yield the bulk of the available water supply for the valley communities. The region is subject to floods when occasional storms having periods of prolonged high rainfall intensities occur in the precipitous watersheds. These floods are particularly disastrous when fire has denuded the watersheds. The magnitude of the water conservation and flood control problem led the United States Forest Service to set aside for watershed management research an area of 17,000 acres including the entire drainages of Big Dalton and San Dimas Canyons, tributaries of the San Gabriel River in eastern Los Angeles County. This area has been named the San Dimas Experimental Forest (Kraebel and Sinclair, '40). Early in the research program of the San Dimas Experimental Forest the importance of accurate knowledge of the floristic composition was recognized in order to evaluate differences between watersheds as well as to determine the
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
