Soil respiration on reclaimed coal-mine spoil

Summary Measurements of soil respiration were made at a number of soil-covered reclaimed coal-mine spoil sites. Many chemical and physical soil factors likely to affect the respiration were also measured. A combination of principal component, cluster, and multiple regression analyses was used to indicate the important factors. These were found to be water-holding capacity and organic matter content. In some cases soil pH was also a controlling factor.