Purpose Macropores have important effects on the different forest communities influence soil macropore 3D movement of soil water, air, and chemical substances. structure significantly and in different ways. Macropores in However, the quantitative relationship between complex mixed Pinus tabulaeformis, Castanea mollissima,and 3D soil macropore networks and forest communities re- Ulmus pumila forest had the largest diameter, surface area, mains unclear in the northern mountainous area in network density, and length density of macropores as well as China. The objectives of this study were to (1) use the smallest mean tortuosity of soil macropores. This is caused industrial computed tomography (CT) scanning and im- by the fact that mixed forest soils had more complex root age analysis to quantitatively analyze macropore net- systems, better soil structure, and more biotic activity. works in intact soil columns and (2) identify character- Within the soils of a single forest community, macropore po- istics of soil macropore networks in different forest rosity, network density, surface area density, and length of communities. macropores decreased with increased soil depth, because more Materials and methods Intact soil columns (100-mm roots and more biological activity were present in the surface diameter, 300 mm long) were taken from six
Journal of Soils and Sediments – Springer Journals
Published: May 27, 2016
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