
TY  - JOUR
A1  - Blank, RR 
A1  - Allen, FL 
A1  - Young, JA 
T1  - Influence of Simulated Burning of Soil-Litter From Low Sagebrush, Squirreltail, Cheatgrass, and Medusahead on Water-Soluble Anions and Cations
JF  - International Journal of Wildland Fire
JO  - Int. J. Wildland Fire
Y1  - 1996
VL  - 6
IS  - 3
SP  - 137
EP  - 143
KW  - Calcium; Magnesium; Sodium; Potassium; Nitrate;Ammonium; Sulfate; Wildfire
UR  - https://doi.org/10.1071/WF9960137 
N2  - 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. 
ER  -

