
%0 Journal Article
%A Blank, RR 
%A Allen, FL 
%A Young, JA 
%T Influence of Simulated Burning of Soil-Litter From Low Sagebrush, Squirreltail, Cheatgrass, and Medusahead on Water-Soluble Anions and Cations
%J International Journal of Wildland Fire
%D 1996/09/01
%V 6
%N 3
%P 137-143
%K Calcium; Magnesium; Sodium; Potassium; Nitrate;Ammonium; Sulfate; Wildfire
%R https://doi.org/10.1071/WF9960137
%U https://www.publish.csiro.au/paper/WF9960137 
%X We evaluated the influence of temperature and heating time on water-soluble anions and cations of soil-litters of low sagebrush (Artemisia arbuscula ssp. longicaulis), squirreltail (Elymus elymoides), cheatgrass (Bromus tectorum), and medusahead (Taeniatherum caputmeduase ssp. asperum). Soil-litters were collected from volcanic tablelands north of Honey Lake, California. These high clay, montmorillonitic, soils have rarely experienced wildfires. Soil-litter samples, in a 50 mt crucible, were placed in a preheated muffle furnace using a time-temperature matrix of 150, 250, 350, and 450&#176;C at 1, 5,and 15 min. High performance ion-exchange chromatography was used to quantify water-soluble cations and anions. For most measured solutes, there was either a significant (P less than or equal to 0.05) burn time &#215; temperature or a significant burn time &#215; temperature &#215; soil-litter type interaction. As compared to pre-burn values, heating of soil generally increased the concentration of the water-soluble solutes measured; nitrate was the exception. Maximum solute values were generally obtained at a temperature of 350&#176;C at 5 and 15 min heating time. A temperature of 450&#176;C at 15 min heating time resulted in the significant reduction of solute concentration below the maximum values. Nitrate was significantly higher in squirreltail soil-litter than the other soil-litters when the burn time was 1 min. Heating, in general, fostered an increase in water-soluble ammonium. For most solutes, heat-induced increases were greatest for the low sagebrush soil-litter. 
