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 respirationCSoil temperatureCWeathered 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