Science-based management strategies for sustainability of agriculture and other land uses
Error message
Notice: Undefined offset: 1 in theme_print_url_list() (line 357 of /var/aegir/platforms/drupal-7.94-deims/profiles/deims/modules/contrib/print/print.pages.inc).
Historical and current hydrological research at the USDA-ARS Jornada Experimental Range in southern New Mexico
Title
Historical and current hydrological research at the USDA-ARS Jornada Experimental Range in southern New Mexico
First Interagency Conference on Research in the Watersheds
Volume
1
Number of Volumes
(1)
Pagination
302-308
Date Published
October 27-30, 2
Conference Location
Benson, AZ
ARIS Log Number
159698
Abstract
The USDA-ARS Jornada Experimental Range (JER)(738 km2) north of Las Cruces, NM, was established in 1912 to assess the impact of grazing in an arid land environment. The majority of rainfall occurs during June-September with an annual mean of 241 mm. Ecophysiological studies employing stable isotopes are underway to identify the sources of water uptake for shrubs and grasses and how the temporal and spatial variability affects the amount and sources of water used by various species. Infiltrometer and rainfall simulation studies are being used to quantify the role of soil biota in controlling soil surface hydrology in arid and semiarid environments and to define the resistance and resilience of different soils and plant communities to different disturbance regimes. Previous work at the Jornada quantified the interception of rainfall for different shrubs and infiltration rates in root-plowed areas. Runoff was measured with a 2.8 m3/s critical depth flume on a shrub-dominated, 7.4-ha watershed from 1977-1986. These flow measurements were reactivated in 2003. Runoff and sediment measurements were also made on plots, microwatersheds, and stock ponds. Because of the aridity of the Jornada, there have been numerous rangeland rehabilitation treatments with the goal of slowing or reversing the shrub encroachment into grasslands. The most effective treatments have revolved around redistribution of surface runoff and its effects on infiltration and soil moisture. Simple, low profile, water-ponding dikes seem to have had the best success in achieving a positive vegetation response.
To view a PDF of any publication, simply click on the title of the publication and then click on the highlighted URL address below the abstract. If there is no URL address, the PDF is not yet available. Please contact us for access to the PDF if required.