TY - JOUR
T1 - Identification of the composite parameters of the BBH-B model specifying the effects of biohydrologic processes on the water balance of crop fields
AU - Kobayashi, Tetsuo
AU - Teshima, Junichi
AU - Mori, Makito
AU - Yasutake, Daisuke
AU - Wang, Weizhen
AU - Cho, Hiroyuki
N1 - Funding Information:
This research has been supported by the Core Research for Evolutionary and Technology (CREST) program of the Japan Science and Technology Corporation (JST). We would like to express our gratitude for their grant in aid for this research. We would like to also thank many students of Kyushu University and Saga University for their help in conducting the experiments and data analyses.
PY - 2009/6
Y1 - 2009/6
N2 - 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.
AB - 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.
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U2 - 10.2478/s11756-009-0083-x
DO - 10.2478/s11756-009-0083-x
M3 - Article
AN - SCOPUS:65549084738
SN - 0006-3088
VL - 64
SP - 478
EP - 482
JO - Biologia
JF - Biologia
IS - 3
ER -