Abstract
To clarify vegetation-landform relationships, we examined the soil disturbance regime in relation to micro-scale landforms and its effects on vegetation structure in a mixed temperate forest in a hilly area in northeastern Japan. Soil profiles in each micro-landform unit were surveyed to elucidate the effects of soil disturbances on the vegetation structure. The hilly area studied consisted of an upper and a lower hillslope area divided by an erosion front, which differed considerably with respect to vegetation structure. In the upper hillslope area, canopy was closed and dominated by Pinus densiflora and Quercus serrata. In the lower hillslope area, on the other hand, canopy was less closed and shrubs, ferns, and herbaceous species were abundant. The species composition changed gradually from the crest slope to the upper sideslope to the head hollow in the upper hillslope area. However, micro-landforms in the lower hillslope area seemed to have less effect on the vegetation structure. This may be because the lower hillslope area, in contrast to the upper hillslope area, has suffered from soil disturbances, and hence shrubs, ferns, and herbs have developed irrespective of micro-landforms. Thus, vegetation can be quite different depending on whether or not sites have suffered from soil disturbance. In disturbed stands, it is suggested that the frequency and intensity of disturbance are more important for species composition than the type of soil disturbance.
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Nagamatsu, D., Miura, O. Soil disturbance regime in relation to micro-scale landforms and its effects on vegetation structure in a hilly area in Japan. Plant Ecology 133, 191–200 (1997). https://doi.org/10.1023/A:1009743932202
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DOI: https://doi.org/10.1023/A:1009743932202