6R. Fogel. Root turnover and productivity of coniferous forests[J] 1983,Plant and Soil(1-3):75~85
7Hans ?. Persson. The distribution and productivity of fine roots in boreal forests[J] 1983,Plant and Soil(1-3):87~101
8E. D. Ford,J. D. Deans. Growth of a sitka spruce plantation: Spatial distribution and seasonal fluctuations of lengths, weights and carbohydrate concentrations of fine roots[J] 1977,Plant and Soil(2):463~485
9E. R. C. Reynolds. Root distribution and the cause of its spatial variability inPseudotsuga taxifolia (Poir.) Britt.[J] 1970,Plant and Soil(1):501~517