期刊论文

中文

湖泊科学

1003-5427

2015

27

5

887-894

10.18307/2015.0515

国家林业公益性行业专项（201104065） 国家国际科技合作专项（2012DFB30030） 湖南省林业科技计划项目（XLK201409） 湖南省科技计划项目（2012WK4013,2013WK4012,2013FJ6048,2013ZK2040）联合资助

本校为第一机构

木本与草本是植物存在的两种主要生活型,生态功能差异明显,尤其在植物被周期性洪水淹没的湿地生态系统中.为此,以洞庭湖湿地二门闸、五门闸、藕池河口、白沙大桥4个研究点的原生柳属木本植被与薹草属草本植被为研究对象,通过对枯水期土壤理化性质与汛期水流速度、水环境的对比监测,揭示两者生态防护功能的差异.对土壤粒径组成而言,在二门闸与白沙大桥2个研究点,木本与草本植物群落土壤样本之间无显著差异;而在五门闸与藕池河,与草本植物相比,木本植物导致土壤上层(0~30cm)与下层(60~90cm)粉粒含量降低,砂粒含量增加,中层(30~60cm)黏粒与粉粒含量增加,砂粒含量降低.对土壤化学性质而言,木本植物总...

The functions of ligneous and herbaceous plants were different due to their differences in life forms,especially in wetland ecosystems in which plants were inundated by periodic flooding. In this study,two native plants of ligneous（ Salix） and herbaceous（ Carex） at four areas（ Ermenzha,Wumenzha,Ouchihekou and Baishadaqiao） in the Lake Dongting wetlands were selected as the study objects. The physical and chemical characteristics of the soil in dry seasons,and flow velocity and water environments in flood seasons were investigated. In Erme...