Systematic analysis of periodic vegetation patterns

Tomoo Okayasu, Yoji Aizawa

研究成果: Article査読

36 被引用数 (Scopus)

抄録

Spatially periodic vegetation patterns are observed in many semiarid regions. They are classified according to their symmetry as vegetation stripes on hillsides or spotted patterns on flat ground. We propose a simple model based on the interactions among water, soil and vegetation, which gives a systematic description of the variety of vegetation patterns. First, it describes most characteristics of vegetation stripes investigated in field observations and agrees with the hypothesized origin of vegetation stripes deduced from field observations, the spatially heterogeneous infiltration rate of surface water into soil. Moreover, it indicates that spotted patterns emerge from the same dynamics. Second, the pattern selection derived from the model is consistent with that found in real phenomena, i.e. predominantly bare ground with spotted vegetation in the most severe environments, banded patterns in intermediate environments and nearly continuous vegetation with spotted bare ground in the most favorable environments.

本文言語English
ページ(範囲)705-720
ページ数16
ジャーナルProgress of Theoretical Physics
10
4
出版ステータスPublished - 2001 10

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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