河南省西平县杨树人工林碳贮量及其分配特征研究

基于对西平县杨树人工林植被生物量,土壤容重和碳含量的调查,估算杨树林生态系统碳贮量。研究表明:杨树林的乔木层碳密度波动在0.489~0.512g/g,杨树各器官的碳密度大小依次是树叶>树干>树枝>树根,整个植被层碳贮量大小依次是乔木层>林下植被层>凋落物层,与其各自生物量所占比例相当;土壤层的碳密度以0~20 cm的最高,往下逐渐降低;整个杨树林的碳贮量为164.29 t/hm2,乔木层碳贮量在整个植被层碳贮量中处于主导地位,占整个植被层碳贮量的97.36%。

Carbon Storage and Spatial Distribution in Poplar Plantation in Xiping County of Henan Province

We evaluated the data of poplar plantation's stand biomass,soil density and their carbon contents collected in Xiping county's poplar plantation to estimate its organic carbon storage.The carbon density of poplar organs varied between 0.5126~0.4892g·g-1.The order from high to low was leaves,stem,branch and root and the order in the carbon density of the whole ecosystem in polar plantation was the tree stratum,understory vegetation and leaf litter,which matched with the biomass of the ecosystem.The highest carbon density of soil was the layer of 0~20cm,and it was decreasing along with the depth declining.The whole carbon storage of the poplar plantation ecosystem was 164.29t·hm-2,and the carbon storage of tree stratum was the dominant part,which accounted for 97.36% of the whole ecosystem.