Soil respiration change immediately after logging operations in an upper tropical hill forest , peninsular Malaysia
Soil respiration change immediately after logging operations in an upper tropical hill forest , peninsular Malaysia
复制标题
DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T.;Yamada;Ñ.;Liang;Okuda
中科院分区：
文献类型：
--
作者：
T.;Yamada;Ñ.;Liang;Okuda
土壤呼吸速率在采伐作业后立即发生变化，这是两个主要因素的结果：（1）采伐树木根系呼吸的变化和（2）采伐作业对土壤的干扰和凋落物量的变化。为了研究这两个因素的程度，我们测量了土壤呼吸速率在马来西亚半岛的山龙脑香林，大约1年前和伐木作业后。采伐作业后，采伐树脚下的土壤呼吸速率没有发生变化，表明采伐后半年内，采伐树的根系呼吸并没有因为根系死亡而降低。这表明，增加的CO2排放量，由于分解的死根被抵消的根呼吸的减少。与此相反，平均土壤呼吸速率在采伐森林采伐作业后下降了25%。伐木作业降低了土壤呼吸速率，这可能是由于森林内环境的变化，如土壤压实和清除凋落物层的重型机械和提取木材在伐木作业。
Soil respiration rate changes immediately after logging operations as a result of two main factors; (1) change in root respiration by logged trees and (2) soil disturbance and change in litter amount by logging operations. To examine the extent of these two factors, we measured soil respiration rate in a hill dipterocarp forest in Peninsular Malaysia, approximately 1 year before and after logging operations. The soil respiration rate at the foot of logged trees did not change after logging operations, suggesting that root respiration of logged trees did not decrease because of root death within a half year after logging. This suggests that increased CO2 emission due to decomposition of the dead roots was offset by the decrease in root respiration. In contrast, average soil respiration rate in the logged forest decreased by 25% after logging operations. Logging operations reduced soil respiration rate possibly because of environment changes within the forest, such as soil compaction and removal of litter layer by heavy machinery and extracted timbers during the logging operations.