Browsing by Subject "peat"
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Item Bulletin No. 16. The Peat Deposits of Minnesota(Minnesota Geological Survey, 1919) Soper, E.K.This bulletin outlines and describes the peat deposits of Minnesota and indicates methods by which they may be utilized for fuel and other purposes. It contains also a discussion of certain areas of peat land in various parts of the state, and purposes for which they are best adapted, whether for agriculture or for the manufacture of peat products. The peat deposits of Minnesota are probably greater than those of any other state in the Union, the quantity of peat being sufficient to make more than six billion tons of good peat fuel. Because of the enormous areas of many of the peat deposits, it was soon realized that any detailed testing of the bogs could be done only on certain selected areas which seem to be especially well situated for development. Such a detailed testing of some of the largest deposits would require years to complete, and in view of the constantly increasing demand in Minnesota for a report on the peat, or muskeg lands of the state, and especially a demand for knowledge as to the agricultural possibilities of these areas, it was decided to examine as many localities as possible and to publish a report of a more general nature which would include descriptions of most of the larger muskegs and peat deposits. Enough soundings were made to determine whether the land should be classified as easily reclaimable, or as better adapted to the manufacture of peat fuel or other peat products. During the two seasons of field work every county in Minnesota was visited and detailed examinations were made in every county which contains peat. In addition to the data thus collected, a large amount of valuable data, including thousands of soundings, has been supplied by the engineers engaged in the various public and private projects for draining the great swamps of northern Minnesota.Item Carbon and Phosphorus Dynamics in Restored Minnesota Peatlands(2022-04) Wille, EmilieWhile many peatlands have been drained for anthropogenic purposes across the world, there is currently high interest in restoring peatlands for carbon and nutrient cycling benefits. Peat holds a disproportionate amount of the world’s soil carbon, making peatlands promising ecosystems for mitigating greenhouse gas emissions and climate change. Additionally, peatlands can sequester phosphorus (P) and prevent it from causing eutrophication in downstream waters, but they can also act as a P source under high runoff conditions. This study aimed to investigate the factors impacting 1) peat carbon dioxide (CO2) flux and 2) mobilization of peat P to porewater in a restored bog and fen in Minnesota. Peat CO2 flux was monitored in-situ throughout the growing season in conjunction with peat type, water table depth, and temperature. Peat columns from each site were saturated and subjected to controlled laboratory incubations to relate porewater ortho-P content to temperature and porewater aluminum (Al), calcium (Ca), and iron (Fe) content. A higher water table was significantly related to lower peat CO2 flux in the fen, and peat CO2 flux across both sites was higher in regions with more decomposed peat. During the peak of the growing season, CO2 flux was much higher in the fen than the bog, but both sites had similarly low CO2 flux at the end of the growing season. It is important that restoration ecologists consider a peatland’s water table when restoring a site’s hydrological, ecological, and biogeochemical functioning in order to achieve the greatest carbon benefit. Higher porewater ortho-P corresponded to higher dissolved porewater Al, Ca, and Fe. Additionally, higher initial peat Ca was significantly related to lower porewater P. These ions play a role in binding and mobilizing P, and their dynamics can help researchers predict and mitigate P release and subsequent export.Item Comparing Properties of Alternative Media for Stormwater Biofilters(2017-05) Swanson, JoshuaAbstract This study includes the classification and characterization of alternative biofiltration media. Materials were evaluated using a series of standardized tests. The performance and physical properties of alternative media were then compared to the currently specified biofiltration mixture of compost and sand. Results from laboratory testing reveal that compost and peat have similar physical properties and infiltrate and retain water at similar rates. Muck soils were found to be inferior to compost by the same performance criteria. These results indicate that peat soils may be a viable alternative to compost for use as a soil additive for biofiltration devices. This study also included the design of field test plots and the configuration of remote field monitoring equipment. The construction of six field test plots comparing compost and peat added as a soil amendment are described. Instrumentation was configured to collect long-term rainfall and water-storage data to evaluate performance in-situ.Item Item Energy From Peatlands: Options and Impacts.(Center for Urban and Regional Affairs, University of Minnesota, 1981) CURA Peat Policy ProjectItem Executive Summary - Energy From Peatlands: Options and Impacts.(Center for Urban and Regional Affairs, University of Minnesota, 1981) CURA Peat Policy ProjectItem Koochiching County Peat Resources: A Planning Demonstration (1976).(Center for Urban and Regional Affairs, University of Minnesota; and Minnesota State Planning Agency, Minnesota Land Management Information System., 1976) MLMISItem Major Peat Resources in Minnesota(Center for Urban and Regional Affairs, University of Minnesota, 1976) MLMISItem Peat Extraction: Existing and Proposed Operations in Minnesota.(Center for Urban and Regional Affairs, University of Minnesota, 1983) Hoff, Mary KingItem Peat for Domestic Fuel(The Geological and Natural History Survey of Minnesota (MGS), 1874) Peckham, S.F.The elaborate article upon Peat, contained in the report of the State Geologist for the year 1873, will give the reader a very comprehensive statement of the Peat question in general, and especially of that question as related to the interests of the citizens of Minnesota. Therein may be found abundant proof that good Peat-yes, very good Peat-has been found in this State, and while there is no doubt very much more that is worth very little or nothing, there is enough that is good to warrant the supposition that many more localities than have been brought to the notice of the Geological Survey, are likely to yield peats that may prove more or less valuable as they are more or less remote from forests or means of communication with deposits of coal. For this reason the object of the following pages will be to convey information. Firstly-Regarding the appearance and properties of· the different kinds of peat, in order that those interested in the subject may be able to distinguish the valuable from the worthless varieties without unnecessary expense. Secondly-Regarding such methods of preparing peat for domestic purposes as require but little capital and are of most general application. Thirdly-Regarding any peculiar conditions attending the combustion of peat that may be necessary to render its introduction successful.Item Peat Resources of Southern Arrowhead Region.(Center for Urban and Regional Affairs, University of Minnesota; and Minnesota State Planning Agency, Minnesota Land Management Information System., 1976) MLMISItem Peat Resources of the Northern Headwaters Region.(Center for Urban and Regional Affairs, University of Minnesota; and Minnesota State Planning Agency, Minnesota Land Management Information System., 1977) MLMISItem Peatland Energy Options: Systems Analysis.(Center for Urban and Regional Affairs, University of Minnesota, 1982) Aiken, Roger; Wilson, Douglas S.Item Update on State Management of Peat Development.(Center for Urban and Regional Affairs, University of Minnesota, 1982) Karasov, Deborah