摘要
采用野外测定结合室内分析的方法,探讨了梁子湖湿地植物对氮磷的积累特征。结果表明,湿地不同植物种类对氮磷的积累特征明显不同。浮游植物积累各种营养物质量最多,其体内全氮量平均为29.07g.kg-1,全磷量平均为9.53g.kg-1。梁子湖湿地各类植物氮磷含量的大小依次为浮游植物>浮叶植物>沉水植物>水稻>挺水植物。各类植物中氮磷积累的大小依次为浮叶植物>挺水植物>沉水植物>沼泽植物>水稻。梁子湖湿地水生植物氮磷营养元素的吸收系数大于湿生植物,各类植物氮元素的吸收系数均大于磷。
Different plant species in Liangzi Lake wetland had different accumulation features of nitrogen and phosphorous. Floating-leaved macrophyte accumulated the largest amount of nutrients, with an average content of total nitrogen and phosphorus being 29.07 and 9. 53 g · kg^-1, respectively. The plant nitrogen and phosphorus contents were in the order of phytoplankton 〉 floating-leaved macrophyte 〉 submersed macrophyte 〉 rice 〉 emerged macrophyte. The nitrogen and phosphorus accumulation in plant was in the order of floating-leaved macrophyte 〉 emerged macrophyte 〉 submersed macrophyte 〉 swamp plant 〉 rice. Hydrophyte could absorb more nitrogen and phosphorus, and the nitrogen absorption by various kinds of plant in the wetland was greater than that of phosphorus absorption.
出处
《生态学杂志》
CAS
CSCD
北大核心
2007年第4期466-470,共5页
Chinese Journal of Ecology
基金
国家林业局梁子湖湿地保护资助项目
关键词
湿地植物
氮磷含量
生物积累
wetland plant
nitrogen and phosphorus content
bioaccumulation.
