Abstract
The role of microorganisms in the reclamation of spent shale wastes in western Colorado and the overburden from lignite stripmining areas in North Dakota are discussed. Adverse conditions for plant growth, such as low organic matter content, salinity, fine texture, and a lack of nitrogen and phosphorus limit the rate of revegetation of the mining wastes. Microbial processes are responsible for the accretion of organic matter and nitrogen fixation. Possible strategies to take advantage of microbial activities to encourage plant growth in stripmined lands are considered. (numerous references, 1table)
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