南京林业大学学报（自然科学版）2016，Vol.40Issue(2)：16-20,5.DOI:10.3969/j.issn.1000-2006.2016.02.003
芦苇与土壤间氮磷化学计量的灰色关联分析
Gray correlation analysis on nitrogen and phosphorus stoichiometry between Phragmites australis and soil
摘要
Abstract
Many aquatic plants play an important role in the immobilization of nitrogen and phosphorus in the wetland soil. Gray correlation analysis was conducted in this study to clarify the relationship of nitrogen and phosphorus contents between the organs of Phragmites australis ( common reed) and soil in different depth in Qinhu Lake wetland. The results show that:①The distribution pattern of nitrogen and phosphorus in the organs of common reed were the same:the total nitrogen contents were with the order of leaf>spike>root>stem and the total phosphorus contents were with the order of leaf >root>spike>stem.②The interaction of nitrogen and phosphorus between common reed and soil mainly concentrat⁃ed in the 0-30 cm soil layer due to the vertical distribution of reed roots. It indicated that the fixation of nitrogen and phosphorus in the soil⁃vegetation system concentrated in the surface of soil.③In the growth period( spring and summer) , the interaction of nitrogen and phosphorus in soil⁃vegetation system primarily occurred in the soil surface. At the same time, a close association of nitrogen and phosphorus contents between ≥45-60 cm depth of soil and the common reed was observed in this study which may be caused by the rising of underground water level.关键词
芦苇/氮/磷/灰色关联分析/溱湖湿地Key words
Phragmites australis(common reed)/nitrogen, phosphorus/gray correlation analysis/Qinhu Lake wetland分类
资源环境引用本文复制引用
李川,朱陈名,葛之葳,李琪,李昱,薛建辉..芦苇与土壤间氮磷化学计量的灰色关联分析[J].南京林业大学学报（自然科学版）,2016,40(2):16-20,5.基金项目
国家林业公益性行业科研专项项目（201404305）；江苏省自然科学基金（青年基金）项目（BK20130973）；江苏省环境监测科研基金项目（1118）；江苏高校优势学科建设工程资助项目 （）
