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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)478-482
Number of pages5
JournalBiologia
Volume64
Issue number3
DOIs
Publication statusPublished - Jun 1 2009
Externally publishedYes

Fingerprint

field crops
water balance
Crops
Rain
water budget
Soil
Hydrology
macropore flow
rain
rainfall
crop
Water
macropore
Composite materials
interception
experiment
Experiments
Soils
soil texture
hydrology

All Science Journal Classification (ASJC) codes

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

Cite this

Identification of the composite parameters of the BBH-B model specifying the effects of biohydrologic processes on the water balance of crop fields. / Kobayashi, Tetsuo; Teshima, Junichi; Mori, Makito; Yasutake, Daisuke; Wang, Weizhen; Cho, Hiroyuki.

In: Biologia, Vol. 64, No. 3, 01.06.2009, p. 478-482.

Research output: Contribution to journalArticle

Kobayashi, Tetsuo ; Teshima, Junichi ; Mori, Makito ; Yasutake, Daisuke ; Wang, Weizhen ; Cho, Hiroyuki. / Identification of the composite parameters of the BBH-B model specifying the effects of biohydrologic processes on the water balance of crop fields. In: Biologia. 2009 ; Vol. 64, No. 3. pp. 478-482.
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