Soil respiration in the deglaciered area on Gongga Mountain, Southwest China

Soil respiration rates were measured during 2006 to 2009 using a soil respiration chamber connected to a portable photosynthesis system (CI-301). Vegetation succession on Hailuogou deglaciered area is serially divided into 7 stages:® herbs community, © Salix-Populus sapling forest, © Populus young forest,®deciduous and broad-leaved forest,©coniferous and broad-leaved mixed forest,©Abies-Picea middle age forest ©coniferous forest. The series of soil CO
2
flux were: 48.48, 38.33, 54.52, 57.80, 83.33, 111.12 and 151.75 kg CO
2
hm
⁻²
d
⁻¹
, respectively. Environmental variation affects soil respiration rates. Seasonal change in soil respiration is influenced by one principal environmental factor, temperature. Soil respiration rates vary exponentially with increases temperature.