期刊论文

Effects of soil physical and chemical properties on carbon density of Triarrhena lutarioriparia in the Dongting Lake wetland

中文

湖南农业大学学报(自然科学版)

1007-1032

2021

47

5

547-552,570

10.13331/j.cnki.jhau.2021.05.010

2019NK2011:湖南省重点研发计划项目 2020SK2019:湖南省重点研发计划项目 19A225:湖南省教育厅重点项目

本校为第一机构

以洞庭湖湿地南荻为研究对象,对24个样点进行采样,测定土壤理化性质以及南荻6个器官（穗、叶、茎、根状茎、根、芽）的生物量和碳含量,分析植物碳密度与土壤理化性质的关系。结果表明:在南荻各器官中,茎的生物量最高,穗的生物量最低;南荻地上部分的碳含量高于地下部分的;茎、根、根状茎、叶、芽、穗的碳密度依次降低;根状茎的碳密度与土壤pH及全钾含量、有机质含量呈正回归关系,与土壤相对湿度和电导率呈负回归关系,南荻的平均碳密度与土壤全磷含量呈正回归关系;冗余分析（RDA）结果表明,第一排序轴与土壤相对湿度呈显著负相关,与pH呈显著正相关;第二排序轴与土壤全钾含量呈显著正相关。茎是南荻...

To understand the carbon density and environmental factors in Dongting Lake wetland, 24 Triarrhena lutarioriparia sample points were sampled to determine the biomass, carbon content and soil physical and chemical properties of 6 organs(panicles, leaf, stem, rhizome, root and bud), and analyze the relationship between plant carbon density and soil physical and chemical properties. The results showed that the biomass of stem was the highest and that of panicles was the lowest. The carbon content of above ground part is higher than that of underground part. The results also exhibited that the seq...