期刊论文

The effects of burning disturbance on the soil chemical properties of Miscanthus sacchariflorus(Poaceae) and Carex brevicuspis(Cyperaceae) communities at Lake Dongting wetlands

Xie, Yonghong(yonghongxie@163.com)

中文

湖泊科学

1003-5427

2016

28

2

334-339

10.18307/2016.0213

国家水体污染控制与治理科技重大专项（2012ZX07204-003-002） 国家科技支撑计划项目（2014BAC09B00）联合资助

本校为其他机构

火烧作为调控因子,对植物群落结构和生态系统功能具有重要影响,但在湖泊湿地中研究较少.通过野外调查取样与实验室分析,探讨火烧对洞庭湖湿地主要群落类型--荻(Miscanthus sacchariflorus)和苔草(Carex brevicuspis)土壤化学性质的影响.结果表明:火烧后,苔草群落土壤硝态氮含量显著减少64.6%,有机质含量增加26.3%;而荻群落土壤与之相反,硝态氮含量增加186.9%,有机质含量减少22.9%.火烧后,苔草群落的全氮、铵态氮、全碳和全磷含量均显著增加,分别增加了75.4%、36.3%、102.7%和76.9%,而荻群落土壤与对照组间无显著差异.总体上,火烧对荻群落土壤养分影响不大,可作为芦苇场的一种管理方式,但火烧促进...

Fire, as an important regulator of the ecosystem, has significant impacts on plant community structure and ecosystem function, but few studies have been conducted in wetland ecosystems. In this paper, we investigated the impacts of fire on soil properties of the dominant community types-Miscanthus sacchariflorus and Carex brevicuspis at Lake Dongting wetlands through field survey and laboratory analyses. The results indicated that soil nitrate nitrogen content of Carex brevicuspis significantly reduced by 64.6% and organic matter content significantly increased by 26.3% after the burning, whic...