|Bolton, Harvey - BATTELLE PACIFIC NW|
|Halvorson, Jonathan - WASHINGTON STATE UNIV.|
Submitted to: American Society of Agronomy
Publication Type: Abstract Only
Publication Acceptance Date: October 20, 1997
Publication Date: N/A
Technical Abstract: A 26 site transect was developed over a 700 m elevation gradient in a shrub-steppe ecosystem in southeast Washington State. The parent material, texture and type was similar over the transect, only the mean annual climate was different. The top 5 cm of soil under a grass (Agropyron) and crust material (lichens) at each site was sampled and analyzed for chemical and biochemical properties. The soil pH increased and the EC decreased up the transect for both soils. The %C and %N decreased with elevation as did the microbial biomass. However the respiration / biomass ratio increased as elevation increased. Properties were significantly different between soil type showing the plant effect. Implications of climate change on soil properties in the shrub-steppe will be discussed.