浙江农业学报 ›› 2016, Vol. 28 ›› Issue (10): 1772-1780.DOI: 10.3969/j.issn.1004-1524.2016.10.20

• 环境科学 • 上一篇    下一篇

滇东南典型岩溶湿地沉积物不同形态磷分布特征

詹乃才1, 刘云根1, 2, *, 王妍1, 2, 梁启斌1, 2, 侯磊1, 2, 王书锦1, 张慧娟1   

  1. 1.西南林业大学 环境科学与工程学院,云南 昆明 650224;
    2.西南林业大学 农村污水处理研究所,云南 昆明 650224
  • 收稿日期:2016-03-07 出版日期:2016-10-15 发布日期:2016-11-20
  • 通讯作者: 刘云根,E-mail:henryliu1008@163.com
  • 作者简介:詹乃才(1990—),男,河南信阳人,硕士研究生,主要从事水土保持生态修复的研究工作。E-mail:zhannaicai5453@126.com
  • 基金资助:
    国家自然科学基金项目(51469030,31460195); 云南省高校优势特色重点学科(生态学)建设项目

Distribution characteristic of different phosphorus speciation in sediment of typical karst wetland located in southeast of Yunnan

ZHAN Nai-cai1, LIU Yun-gen1, 2, *, WANG Yan1, 2, LIANG Qi-bin1, 2, HOU Lei1, 2, WANG Shu-jin1, ZHANG Hui-juan1   

  1. 1. College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China;
    2. Research Institute of Rural Sewage Treatment, Southwest Forestry University, Kunming 650224, China
  • Received:2016-03-07 Online:2016-10-15 Published:2016-11-20

摘要: 以滇东南普者黑岩溶湿地为研究对象,设置典型样地,采用典型样带布点方式,探索稻田湿地、草甸湿地和湖滨湿地区域中沉积物总磷(TP)和各形态磷(磷酸二钙,Ca2-P;磷酸八钙,Ca8-P;磷酸十钙,Ca10-P;铝磷,Al-P;闭蓄态磷,O-P)含量分布特征,并分析各形态磷间的相关性。结果表明,稻田湿地、草甸湿地、湖滨湿地区域中沉积物总磷含量变化幅度较大,依次为稻田湿地>湖滨湿地>草甸湿地。沉积物各形态磷组分中,以Ca-P为主,且Ca-P中的Ca10-P所占比例最高,对沉积物TP贡献最大。Ca2-P、Ca8-P、O-P、Ca10-P的空间分布特征与TP一致。湖滨湿地区沉积物各形态磷含量垂直方向总体均以表层(0—5 cm)最高,并依次向下层递减。沉积物中各形态磷与TP含量均呈正相关,其中,Ca2-P、Al-P与TP显著相关,对沉积物TP的影响较大。

关键词: 普者黑, 岩溶湿地, 沉积物, 磷形态

Abstract: In the present study, Puzhehei karst wetland, located in the southeast of Yunnan, was selected as the research area, and typical sample plots were also set to determine the contents of different speciation of phosphorus and the distribution characteristics of total phosphorus (TP) and different phosphorus speciation (Ca2-P, Ca8-P, Ca10-P, Al-P and O-P) in the area of paddy wetland, meadow wetland and lakeside wetland, as well as the correlation analysis among phosphorus speciation. It was shown that the contents of total phosphorus exhibited large variations in the sediment of paddy wetland,meadow wetland and lakeside wetland, which followed the sequence of paddy wetland>lakeside wetland>meadow wetland. Ca-P was the main form of phosphorus speciation in sediments, and the Ca10-P showed the highest proportion in Ca-P. The spatial distribution characteristics of Ca2-P, Ca8-P, O-P, Ca10-P were consistent with that of TP. In the vertical direction, the distribution of each phosphorus speciation showed the highest concentrations in the surface layer (0-5 cm) of the sediments in lakeside wetland and decreased with the increasing depth. Each of the phosphorus speciation was positively correlated to TP in sediment, and Ca2-P and Al-P were significantly correlated to TP.

Key words: Puzhehei, karst wetland, sediment, phosphorus speciation

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