太行山丘陵区群落演替进程中碳贮量变化特征  

The Variation of Carbon Storage During the Community Succession Processing in Hilly Region of Taihang Mountain

作　　者：赵勇[1] 吴明作[1] 樊巍[2] 朱彦锋[1] 赵东[1] 

机构地区：[1]河南农业大学,河南郑州450002 [2]河南省林业科学研究院,河南郑州450003

出　　处：《水土保持学报》2009年第4期208-212,共5页Journal of Soil and Water Conservation

基　　金：国家"十一五"科技支撑项目(2006BAD03A1102);河南省科技攻关项目(0624090010);国家林业局黄河小浪底森林生态定位研究站基金

摘　　要：为了解植被演替过程中碳贮量分布格局,以太行山丘陵区典型群落为研究对象,采用样地调查法,对其生态系统碳贮量进行了研究。结果表明:(1)土壤碳密度随演替进程逐渐提高,其排序为:乔木阶段(58.3 t/hm2)>灌丛阶段(43.1 t/hm2)>草本阶段(20.47 t/hm2);(2)土壤活性有机碳含量随演替进程呈逐渐增高的趋势。其含量排序为:乔木阶段(0.94%)>灌丛阶段(0.84%)>草本阶段(0.34%);(3)在群落演替的过程中,植被碳贮量逐渐增加,栓皮栎群落最高,达40.30 t/hm2;草本群落阶段最低(1.34 t/hm2);灌木群落居中(8.26 t/hm2)。在碳贮量构成中,乔、灌群落的乔木层碳贮量所占比重最高;草本层所占比例最小。草本层碳贮量所占比例随演替进程呈下降趋势。(4)生态系统碳总贮量随演替进程呈上升态势,由草本阶段的21.81 t/hm2,增加到灌木阶段的51.36 t/hm2,乔木群落阶段达到最大,为92.63 t/hm2。生态系统碳贮量增加约4.3倍。在碳贮量构成中,土壤碳储量所占比重最大。土壤碳贮量占总贮量的比重随演替进程呈下降趋势。In order to analyze the distribution patterns of carbon storage with the vegetation succession, the carbon storage of the ecosystem were investigated based on selecting typical communities for a case study in hilly region of Taihang Mountain. The results obtained were as follows： （1）The carbon density in the soil was increased with community succession, which was in order of trees stage 〉 shrub stage〉grass stage. （2） The active soil organic carbon concentration in the soil increased with the community succession, which was in order of trees stage 〉 shrub stage, grass stage. （3） The vagetation carbon storage increased with community succession. The amount of the carbon storage of the Quercus variabilis stands was 40. 30 t/hm^2, which was the highest among the three succession stages, while the lowest one, grass stages with 1. 34 t/hm^2 and the middle one, shrubs stages with 8.26 t/hm^2. The carbon storage in the tree layer accounts for more than 90 % of total vegetation carbon storage. While the ratio of the total carbon storage in grass layer was the lowest and decreased with community succession. （4） The ecosystem carbon storage showed the trend of increasing with the community succession. The ecosystem carbon storage of the trees stage was the highest at 92.63 t/hm^2 ,which was 4.3 times more than that of the grass stage, while the lowest one, the grass stage with 21.81 t/hm^2 and the middle one, the shrub stage with 51. 36 t/hm^2. The soil carbon storage was the predominant of ecosystem carbon storage. The proportion of the soil carbon storage to ecosystem carbon storage decreased with the community succession.

关 键 词：森林生态系统 植被碳贮量 植被碳密度 群落演替 

分 类 号：S718.54[农业科学—林学]