对江西安福林区毛竹纯林、竹阔和竹杉混交林土壤团聚体组成的分布及有机碳含量、与土壤总有机碳的关系和贡献率等土壤团聚体特征进行研究.结果表明,不同类型毛竹林土壤团聚体含量的分布趋势为随着土壤团聚体粒径减小而下降,粒径>0.25 mm团聚体含量平均值由大到小依次为竹杉混交林、竹阔混交林和毛竹纯林.土壤团聚体有机碳含量平均值由大到小依次为(2~1 mm)、(>5 mm)、(1~0.5 mm)、(5~2 mm)和(0.5~0.25 mm).>0.25 mm团聚体有机碳含量平均值以竹阔混交林最高,为32.43 g/kg,其次是毛竹纯林(26.99 g/kg),竹杉混交林最低,为21.18 g/kg,且均随着土层深度的增加而显著减少.不同类型毛竹林土壤团聚体有机碳与总有机碳呈显著正相关,且各粒径团聚体间有机碳含量均呈极显著正相关.粒径>5 mm和5~2 mm团聚体有机碳的贡献率在47.74%~75.60%,由大到小依次表现为竹杉混交林、竹阔混交林和毛竹纯林,说明混交经营有利于大粒径团聚体中有机碳的积累.研究结果可为我国亚热带地区毛竹林资源的合理经营提供科学依据.%The soil aggregate characteristics under three stand types ( pure Moso bamboo forest,mixed for-est of Moso bamboo and broad-leaved tree,mixed forest of Moso bamboo and Chinese fir) were in Anfu,Jiangxi Province were analyzed including its distribution and organic carbon content,the relationship between soil ag-gregate organic carbon and soil total organic carbon,the contribution rate of soil aggregate organic carbon. The results showed that the distribution trend of soil aggregate contents decreased with the decrease of aggregate size.The order of soil aggregate contents of the>0.25 mm size group was that of the mixed forest of Moso bamboo and Chinese fir>that of the mixed forest of Moso bamboo and broad-leaved tree>that of the pure Moso bamboo forest.The content sequence of soil aggregate organic carbon was as follows:(2-1 mm)>(>5 mm)>(1-0.5 mm)>(5-2 mm)>(0.5-0.25 mm).The organic carbon aggregate of the size>0.25 mm of the mixed forest of Moso bamboo and broad-leaved tree was the highest(32.43 g/kg),and the next came that of the pure Moso bamboo forest(26.99 g/kg),the third was that of the mixed forest of Moso bamboo and Chinese fir(21.18 g/kg).The av-erage content of the organic carbon of the aggregate of the size>0.25 mm significantly decreased with increasing soil depth.There was a positive correlation between soil aggregate organic carbon and soil total organic carbon, and there was a significant positive correlation among aggregates of different sizes under different types of Moso bamboo forests.The contribution rates of soil aggregate organic carbon of the groups of the>5 mm and 2-5 mm sizes were from 47.74% to 75.60%.The sequence of contribution rates of soil aggregate organic carbon was that of the mixed forest of Moso bamboo and Chinese fir>that of the mixed forest of Moso bamboo and broad-leaved tree>that of the pure Moso bamboo forest,showing that mixed planting could help to improve carbon accumula-tion in big aggregate.The results could provide some scientific basis for Moso bamboo management in the sub-tropical region of China.
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机译：samband mellan Undergrundens Jordart och Tillstand och dess Dynamiska E-modul（medelmodul）vid Olika arstider：En preliminaer Undersoekning（不同季节土壤中土壤类型和状况与土壤动态E-模量（平均模量）的关系）年份：初步调查）
