The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal. Enzyme activity and respiration in minesoils. Soil Science Society of America Journal, 46, 548–553.

The image was opened in Adobe® Photoshop® Creative Cloud 2018. Using the “crop” tool, the image was reduced in size to show an individual plot. On some plots, the “image rotation” tool was used to square the plot to allow for more precise cropping.

An especially important aspect of reclamation is soil selection. In many cases, native topsoil is not available for use during reclamation, and crushed overburden may be used as a substitute. When this is the case, the type of spoil selected may influence the long-term ecological development of the site, for better or for worse.

Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Barton, C.; Karathanasis, T. A novel method for measurement and characterization of soil macroporosity. Please let us know what you think of our products and services. You seem to have javascript disabled. Please note that many of the page functionalities won’t work as expected without javascript enabled.

The DOC content along with soluble Al, Cu, and Zn in the leachate were measured using a TOC analyzer (Shimadzu TOC-505A; Shimadzu Scientific Instruments; Kyoto, Japan) and by ICP-OES (Bradford et al., 1975). Sena, K.; Barton, C.; Hall, S.; Angel, P.; Agouridis, C.; Warner, R. Influence of spoil type on afforestation success and natural vegetative recolonization on a surface coal mine in Appalachia, United States. Sena, K.; Barton, C.; Angel, P.; Agouridis, C.; Warner, R. Influence of spoil type on chemistry and hydrology of interflow on a surface coal mine in the eastern US coalfield. Microbial enzymatic activity was influenced only at highest biochar and lime application.

Fluorescence at 450 nm was measured with an excitation at 330 nm. Autohydrolysis of the substrate was evaluated and subtracted from spoil sample emission values. A katlynn_gill mega second portion of 1 g field moist spoil was weighed, oven dried for 24 h at 70°C, and used to calculate enzyme activities on a per gram dry weight spoil basis.

Biochar has already been used to remediate mine spoils from the abandoned Formosa Mine (near Riddle, OR; Phillips et al., 2016). In this pot study, two biochars produced from gasified grass seed screenings and mixed conifer wood were applied to spoils at 0 to 202 t/ha, in which wheat (Triticum aestivum L.) was planted. Both biochars increased nutrient availability, resulting in significantly more wheat biomass (1.0 g) vs. the un-amended control (0.1 g). However, wheat is not a recommended plant species for revegation and restoration of mine spoils .

Trace Substances in Environmental Health, 22, 306–320. The statistically significant increase in β-glucosidase activity in the spoil amended with 5% biochar + lime, (Fig. 2B) may be the result of heterotrophic activity response to biochar’s labile C pool. These results are similar to Ducey et al. and Kolb et al. reports that demonstrated a positive correlation between microbial communities and biochar amendment rates. Maiz, I., Esnaola, M. N., & Millan, E.

Metals sorbed to the biochars were desorbed using 0.01M CaCl2 and the biochar with greatest Cu and Zn binding was chosen to use in the mine spoil experiment. Among the top three biochars, we chose to evaluate Miscanthus biochar because it removed the most metals, but did not release them with salt extraction. Moreover, Miscanthus biochar possessed a high N2-BET surface area which is hypothesized to facilitate heavy metal sorption (Janus et al., 2015). Miscanthus feedstock was obtained from the US EPA National Health and Environmental Effects Research Laboratory, Corvallis, OR, USA. The feedstock was oven-dried at 60°C, and then pulverized into 4-mm flakes using a grinder (Wiley-Mill; Thomas Scientific, Swedesboro, NJ, USA). These raw flakes were then pyrolyzed at 700°C as outlined by Novak et al. . Miscanthus biochar was placed in plastic sealable plastic bags and stored in a dessicator until later use.

In turn, the shale-derived soils can hold more carbon (2.06%) than any other spoil type and possibly more water than Mixed. Conversely, Brown exhibited the least ongoing weathering among the spoils, with lowest the percentage of fines and the highest percentage of sand. In addition, base saturation was lowest on Brown (84.6%), suggesting that Brown was already weathered sufficiently so that the release of exchangeable bases was balanced with the cation exchange capacity.