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Ecological Studies on the Revegetation Process of Surface Coal Mined Areas in North Dakota. 3. Soil and Vegetation Development of Abandoned Mines

机译:北达科他州露天煤矿区植被恢复过程的生态学研究。 3.废弃矿山的土壤和植被发育

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Soil and vegetation development were studied on abandoned mine sites near Velva in Ward County, North Dakota. The sites studied were 1, 7, 17, 30 and 45 years old since abandonment; unmined sites were also studied to provide measures of comparison. Species diversity was the highest at unmined sites (114) and lowest at the 1 year old site (26). Stand-environmental complex ordinations encompassing 53 variables showed topographic variables to be the most important followed by site ages. Rates of nutrient accumulations were given in the report.

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