Biotic and abiotic factors controlling the spatial and temporal variation of soil respiration in an agricultural ecosystem |
| |
| Authors: | Guangxuan Han Zhenzhu Xu Yang Yang Jingli Liu Kuiqiao Shi |
| |
| Institution: | Laboratory of Quantitative Vegetation Ecology, Institute of Botany, The Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Haidian District, Beijing 100093, PR China |
| |
| Abstract: | Based on the continuous observation of soil respiration and environmental factors in a maize ecosystem from late April to late September in 2005, the spatial and temporal variation of soil respiration and their controlling factors were analyzed. There was a significant spatial pattern for soil respiration at the plant scale and higher soil respiration rates tended to occur near the maize plant during the growing season. On one measurement moment, root biomass (B) in soil collars exerted significant influence on the spatial pattern of soil respiration under the relatively homogeneous environmental conditions. A linear relationship existed between soil respiration rate and root biomass |
| |
| Keywords: | Soil respiration Spatial variation Biotic factors Abiotic factors |
| 本文献已被 ScienceDirect 等数据库收录！ |
