Identification of the composite parameters of the BBH-B model specifying the effects of biohydrologic processes on the water balance of crop fields

Tetsuo Kobayashi, Junichi Teshima, Makito Mori, Daisuke Yasutake, Weizhen Wang, Hiroyuki Cho

研究成果: Contribution to journalArticle

1 被引用数 (Scopus)

抄録

A model of soil hydrology incorporating rainfall interception and macropore flow, which are representative biohydorologic processes, (BBH-B model) has two composite parameters, Π and Φ. These parameters express the ratios of rainfall interception and macropore flow to gross rainfall, respectively. Their values, however, change widely with the vegetation, soil texture and wetness. The results of experiments that have been carried out for various objectives under various conditions by the present authors were reanalyzed to evaluate these two parameters. Further, two supplemental experiments were designed to identify the two parameters. In the experiments, the monthly mean of Π for a cornfield ranged from 0.18 to 0.64 in the summer months, while Φ for a weed-grown field reached a maximum of 0.8 when daily rainfall was more than 40 mm day-1. From these analyses and experiments, we concluded that the effects of biohydrologic processes on the water balance of crop fields are rather large and not negligible.

本文言語英語
ページ(範囲)478-482
ページ数5
ジャーナルBiologia
64
3
DOI
出版ステータス出版済み - 6 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry
  • Animal Science and Zoology
  • Molecular Biology
  • Genetics
  • Plant Science
  • Cell Biology

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