Dynamics of Soil Respiration Rate of Three Natural Forests in Kanas Nature Reserve
Spatial and temporal patterns of soil respiration under the natural species of Larix sibirica, Pinus sibirica and Picea obovata were studied during the growing season ( from June to September ) in 2012 .Soil respiration rate and environmental factors were measured by LI-8100 portable soil respiration system, and their relationships were analyzed.The diurnal change of soil respiration rate in three natural stands is the unimodal.The maximum value is in 14:00-16:00.Changes of soil respiration rate are the unimodal form June to September in the growing season.The maximum value is in July.The soil respiration rate decreases with the increasing of the elevation from 1 600 m to 1 800 m.The mean soil respiration rate of three forest type in growing season is P.sibirica stand>L.sibirica stand>P.obovata stand.The soil respiration rate in these three natural stands are mainly affected both by the soil temperature (p<0.05) and the soil humidity (p<0.01).
NETL
NSTL
万方数据
维普
