Return to equivalent capability is the principle governing land reclamation in Alberta. However, land capability rating systems are seldom used to determine post-reclamation equivalency in agricultural lands. This study used the Land Suitability Rating System for Agricultural Crops (LSRS) to estimate reclaimed soil profile ratings. Baseline soil data for 30 soil series obtained from the Alberta Soil Layer file were changed to yield synthetic data. Admixture was simulated by mixing 10 equal increments of B horizon (subsoil) into the A horizon (topsoil) to a maximum of 50% of initial A horizon thickness. Subsoil density was changed in 2.5% increments above baseline to a maximum increase of 25%. Admixture effects on texture, organic carbon, and thickness of topsoil and density change in subsoil were quantified across these 10 treatment levels and deductions were calculated with the LSRS. At level 10 in which topsoil consisted of 33% subsoil admixture by volume and subsoil density had increased by 25%, capability declined from one to five classes below baseline. Future work will employ quantitative field data to explore the accuracy of these findings and to test the hypothesis that current assessment methods may be unreliable for confirming a return to equivalent capability.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 97 • No. 2