关键词: 华北低丘山区, 栓皮栎人工林, 撂荒地, 生长季, 土壤呼吸

Abstract: During the growing season of 2010, in order to find the difference of soil respiration between the 29 yearold quercus variabilis plantation and abandoned land, soil respiration rate were measured with the static chamber gas chromatography method in the south hilly region of North China.The main results were as follows: (1)the seasonal variation curves of soil respiration on the plantation and abandoned land both had a single peak during the studying period. The largest soil respiration rate occurred in the July. Average soil respiration on the plantation during the studying period was 601.69 mg/m² less than the abandoned land (1007.96mg/m²  , about 40.3% lower.(2) Both for the abandoned land and quercus variabilis plantation, soil respiration were controlled mostly by soil temperature and there was no significant correlation between the soil respiration rate and soil water content in the studied abandoned land.At the depth of 5cm, Q of the abandoned land and quercus variabilis plantation were 2.702 and 2.573,respectively.

Key words: Hilly region of North China, Quercus variabilis plantation, Abandoned land, Growing season, Soil respiration