Abstract
Authors
TAMAI Koji, KOMINAMI Yuji, MIYAMA Takafumi, GOTO Yoshiaki, OHTANI Yoshikazu
Year
2009
Title
Topographical Effects on Soil Respiration in a Decious Forest -The Case of Weathered Granite Region in Southern Kyoto Prefecture-
Journal
Journal of Agricultural Meteorology
Volume
64(4)
Page
215-222
DOI
doi:10.2480/agrmet.64.4.7
Keywords
Soil moisture ratio, Soil respirationCSoil temperatureCWeathered granite
URL
http://www.jstage.jst.go.jp/article/agrmet/64/4/64_215/_article/-char/ja/
Abstract
We monitored soil respiration at a valley bottom and a ridge above that valley in an experimental forest and quantitatively estimated the effect topography on soil respiration. Compared to the valley bottom, the ridge showed a lower rate of soil respiration in summer and a higher rate in winter, the seasonal difference was caused by soil drying in summer and soil warmth in winter. Both the valley bottom and ridge had annual soil respiration rates of approximately 6.2 tC ha
-1 year
-1. However, the annual value for the ridge included the estimated respiration acceleration due to warm soil temperature (0.68 tC ha
-1 year
-1) and deceleration caused by soil drying (0.62 tC ha
-1 year
-1).
Site
YMS
Remarks