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- Info
Wildland watershed management. 2d ed
| Author: |
Satterlund, Donald R.; Adams, Paul W. |
| Date: |
1992 |
| Periodical: |
New York, NY: John Wiley and Sons, Inc. |
| Abstract: |
Small portions of most watershed lands are tightly linked to the stream system at nearly all times (e.g., riparian zones), whereras much of the remainder is well buffered from it most of the time. However, the area of tight linkage shrinks and expands, and its location shifts over time. It is at least, and usually only near perennial channels at the end of long dry seasons, and greatest and widespread into every swale and lower slope at the peak of the wet season. The extent and location of strong linkages also varies with general climate and physiography, being more persistently widespread and ill-defined in humid regions of moderate topography, but consistently limited and well-defined in steep, arid lands. These variable linkages cause even more variable water yield responses to identical impacts on the watershed, depending on impact location, extent, and timing, even to the degree that an identical modification (e.g.; removal of vegetation by fire) may be beneficial, neutral, or harmful to the water resource at different times or places on a watershed. The relationships are explained and illustrated, with methods to help the reader in the field, throughout the book. The emphasis is on small headwater stream systems, where the linkages between land and water is most pronounced, and where most wildlands – forests, range, and alpine lands – are found. |
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