The estimation of time series data for soil respiration based on soil temperature and soil moisture content ratio and its spatial variations in a small mountainous catchment: In the case of weathered granite region in southern Kyoto prefecture [Japan]
2005
Tamai, K.(Forestry and Forest Products Research Inst., Kyoto (Japan). Kansai Research Center) | Kominami, Y. | Miyama, T. | Goto, Y.
There are few studies dealing with the time series data for soil respiration and its spatial variation in a small mountainous catchment which is located on the complex terrain in Japan, generally. Soil respiration rate was measured at 96 soil colors in the small mountainous catchment (1.6 ha) in this study. The relation between soil temperature, soil moisture content ratio and measured soil respiration rate was expressed by one function in spite of the fact that the measured placcs were located in different topographical parts. To verify this function, soil respiration rate was measured at anothor 264 soil colors in the same catchment. The relative difference between calculated and measured soil respiration rate was 25%. The time series data for daily soil respiration was estimated by this function used with the monitoring data for soil temperature and soil moisture content ratio at 5 places in this catchment. These daily soil respiration rates fluctuated at almost the same time and their relative variation ranges between 50 and 140% in one year.
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