期刊论文

Vertical Distribution of Soil Organic Carbon in Salix triandroides and Carex brevicuspis Communities Along Water Level Gradients in the Dongting Lake Wetlands

Niu, Y.-D.

中文

生态与农村环境学报

1673-4831

2019

35

8

1051-1057

10.19741/j.issn.1673-4831.2018.0569

XKL201702:湖南省林业科技项目 2014-3-15:科技计划

本校为第一机构

以洞庭湖湿地3种水位梯度(-60、-40和-20 cm,即水位在土壤表层60、40和20 cm以下)的川三蕊柳(Salix triandroides)和短尖薹草(Carex brevicuspis)为研究对象,揭示0~ 20、>20 ~ 40、>40 ~ 60、>60 ~ 80 cm土壤有机碳及腐殖质碳(胡敏酸碳、富里酸碳、胡敏素碳)含量的垂直分布特征。结果表明,在3种水位下,川三蕊柳和短尖薹草群落土壤有机碳和腐殖质碳含量均以0~ 20 cm土壤较高。川三蕊柳0~ 20 cm土壤有机碳含量以高水位区较高,而>20~ 80 cm土壤以中水位区较高;短尖薹草4层土壤有机碳含量均以中水位区较高。对土壤富里酸碳含量而言,川三蕊柳和短尖薹草群落在3种水位之间无显著差异。对土壤胡敏酸含量...

The Salix triandroides and Carex brevicuspis communities in Dongting Lake wetland with three gradient of ground water level were studied, the comparison revealed the content of soil organic carbon and the composition of humus carbon (Humic acid carbon, Fulvic acid carbon and Humin carbon) in the four soil layers (0-20, >20-40, >40-60 and >60-80 cm) of the two plant communities. The results show that:(1) The content of organic carbon and humus carbon in the soil of two species of plant communities was higher at 0-20 cm soil layer. (2) In general...