Quantifying components of soil respiration and their response to abiotic factors in two typical subtropical forest stands, southwest China.

ABSTRACT: Separating the components of soil respiration and understanding the roles of abiotic factors at a temporal scale among different forest types are critical issues in forest ecosystem carbon cycling. This study quantified the proportions of autotrophic (RA) and heterotrophic (RH) in total soil (RT) respiration using trenching and litter removal. Field studies were conducted in two typical subtropical forest stands (broadleaf and needle leaf mixed forest; bamboo forest) at Jinyun Mountain, near the Three Georges Reservoir in southwest China, during the growing season (Apr.-Sep.) from 2010 to 2012. The effects of air temperature (AT), soil temperature (ST) and soil moisture (SM) at 6 cm depth, solar radiation (SR), pH on components of soil respiration were analyzed. Results show that: 1) SR, A

SUBMITTER: Yu L 

PROVIDER: S-EPMC4332482 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature