Abstract

Authors

Koji TAMAI，Yuji KOMINANI, Takafumi MIYAMA and Yoshiaki GOTO

Year

2005

Title

Temporal Fluctuations in the CO₂ Efflux on a Forest Floor -The Case of an Extremely Immature Forest Soil-

Journal

Journal of Agricultural Meteorology

Volume

60(5)

Page

773-776

DOI

Keywords

Automated IRGA enclosed chamber, Soil moisture, Weathered granite

URL

Abstract

The CO₂ efflux was measured on the forest floor of a secondary broad-leaved forest located in southern Kyoto prefecture using an automated IRGA enclosed chamber. T11e location at which the measurements were made had been bare land for many centuries until reforestation took place two hundred years ago. Toda, the soil organic carbon ratio is very low and the soil structure not well developed. No clear diurnal fluctuation in CO₂ efflux was recognized, presumably due to the very low organic carbon ratio in the soil and the limited emission of CO₂ from surface layers. The largest seasonal fluctuations in CO₂ efflux rate did not occur on those days when soil temperatures were highest, as the soil moisture was also low at this lime.

Site

YMS

Remarks