Runoff and erosion from a rapidly eroding pinyon-juniper hillslope

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The dramatic acceleration of erosion associated with the expansion of pinyon-juniper woodlands over the past 100 years has been a widely recognized but poorly understood phenomenon. A more complete understanding will come only through long-term observations of erosion and related factors. To this end, we are conducting a study of a small (1-ha) catchment in a rapidly eroding pinyon-juniper woodland. Since July 1993, we have been collecting data on runoff, erosion, and weather conditions in the catchment, as well as on the topography, soils, and vegetation. Our preliminary results suggest that (1) the catchment is currently in a cycle of ... continued below

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27 p.

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Wilcox, B.P.; Davenport, D. W.; Pitlick, J. & Allen, C.D. February 1, 1996.

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Description

The dramatic acceleration of erosion associated with the expansion of pinyon-juniper woodlands over the past 100 years has been a widely recognized but poorly understood phenomenon. A more complete understanding will come only through long-term observations of erosion and related factors. To this end, we are conducting a study of a small (1-ha) catchment in a rapidly eroding pinyon-juniper woodland. Since July 1993, we have been collecting data on runoff, erosion, and weather conditions in the catchment, as well as on the topography, soils, and vegetation. Our preliminary results suggest that (1) the catchment is currently in a cycle of accelerated erosion that began concomitant with a shift from ponderosa pine forest to pinyon-juniper woodland that was initiated by a prolonged drought; (2) the intercanopy soils cannot be sustained at the current erosion rates and will be mostly stripped away in about a century; (3) large summer thunderstorms are the most important agents of erosion (4) erosion increases dramatically as the scale increases; (5) runoff makes up <10% of the water budget.

Physical Description

27 p.

Notes

OSTI as DE96005509

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  • British Geomorphological Research Group symposium: hillslope process, Bristol (United Kingdom), 20-22 Sep 1996

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  • Other: DE96005509
  • Report No.: LA-UR--95-4042
  • Report No.: CONF-960984--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 266799
  • Archival Resource Key: ark:/67531/metadc665402

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  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • March 1, 2016, 6:31 p.m.

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Wilcox, B.P.; Davenport, D. W.; Pitlick, J. & Allen, C.D. Runoff and erosion from a rapidly eroding pinyon-juniper hillslope, article, February 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc665402/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.