Establishment and succession of vegetation on different soil horizons
AuthorsJesse D. Sinclair
Arthur W. Sampson
Authors AffiliationsJesse D. Sinclair was Assistant Forest Ecologist, U. S. Forest Service; Arthur W. Sampson was Associate Professor of Forestry and Plant Ecologist in the Experiment Station.
Hilgardia 5(7):155-174. DOI:10.3733/hilg.v05n07p155. January 1931.
Abstract does not appear. First page follows.
Vegetation and Soil Profile
It has long been recognized that different plant species occupy rather distinct soil profiles.(4),(6) Typically, species of the first herb stage inhabit soil profiles where the upper stratum has been removed or where the edaphie conditions of the upper stratum have been altered by biotic influences.(3) In incipient stages of erosion the second herb stage is in evidence. When erosion has not proceeded beyond the norm and the soil profile is mature, climax species usually predominate.
This investigation was initiated for the purpose of studying the behavior of seral activities upon areas where the soil profile had been disturbed in varying degrees. The specific points investigated were: (1) the influence of soil horizons A, B, and C, as delineated by Glinka(3) and others, on the rate of growth of certain annual plants which dominate early successional stages, compared to certain perennial herbs recognized as stable or climax in grassland communities; (2) the comparative plant development in soil horizons A, B, and C; (3) the time of seed maturity in the respective soil horizons of extensive soil series of the state; (4) the water requirements of plants developed in the different soil horizons; and (5) the differences in growth and in water requirements in soils naturally packed as compared with those artificially packed.
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