| 青藏高原典型湖泊湖岸带表层沉积物碳、氮、磷分析 |
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| 引用本文： | 张娜,李红敬,远凌威,李伟.青藏高原典型湖泊湖岸带表层沉积物碳、氮、磷分析[J].陕西师范大学学报,2010(3). |
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| 作者姓名： | 张娜 李红敬 远凌威 李伟 |
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| 作者单位： | 中国科学院武汉植物研究所;暨南大学水生生物研究中心;信阳师范学院生命科学学院; |
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| 基金项目： | 国家重点基础研究发展规划(973)资助项目(2002CB412300); 国家自然科学基金资助项目(30570291); 国家高技术研究发展计划(863计划)项目(2005AA6010100503) |
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| 摘 要： | 在青藏高原地区的尕海、纳木错和羊卓雍错3个湖区的典型湖泊湖岸带采集表层沉积物,测定总有机碳、总氮、总磷含量,分析营养元素间的原子比.结果显示:7处湖岸带表层沉积物有机碳含量介于1.19～46.84g/kg之间,其中尕海糊区的果茫滩最高;总氮含量介于0.26～10.84g/kg之间,尕海最高;总磷含量介于0.05～0.38g/kg之间,尕海最高;纳木错有机碳、总氮、总磷含量均为最低.湖岸带表层沉积物C/N的最大值和最小值均出现在尕海湖区,分别是尕海湖区果芒滩的19.04和尕海湖区尕海的2.85,其他两个湖区的值均在5～10之间;C/P均大于60;N/P值介于8.75～63.17之间;纳木错湖区的N/P和C/P均低于另外两个湖区.可以认为:磷是3个湖区潜在的营养限制因子;尕海存在外源氮输入;果芒滩沉积物有机质主要来源为陆生和水生维管束植物碎屑混合物,纳木错湖区和羊卓雍错湖区则为湖泊自生的水生生物碎屑混合物.
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| 关 键 词： | 青藏高原 沉积物 有机碳 氮 磷 |
Characteristics of organic carbon,nitrogen and phosphorus in surface sediments of typical littorals of three lake regions on Qinghai-Tibet Plateau |
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| ZHANG Na,LI Hong-jing,YUAN Ling-wei,LI Wei.Characteristics of organic carbon,nitrogen and phosphorus in surface sediments of typical littorals of three lake regions on Qinghai-Tibet Plateau[J].Journal of Shaanxi Normal University: Nat Sci Ed,2010(3). |
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| Authors: | ZHANG Na LI Hong-jing YUAN Ling-wei LI Wei |
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| Institution: | ZHANG Na1,LI Hong-jing2,YUAN Ling-wei3,LI Wei1(1 Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,Hubei,China,2 Research Center of Hydrobiology,Jinan University,Guangzhou 510632,Guangdong,3 College of Life Science,Xinyang Normal University,Xinyang 464000,Henan,China) |
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| Abstract: | Surface sediments' samples of typical littorals of three lake regions,Gahai,Nam Co and Yamzho Yumco lake region,on Qinghai-Tibet Plateau were collected to measure total organic carbon,total nitrogen and total phosphorus content. The content of total organic carbon (TOC) varied from 1.19 to 46.84 g/kg,the content of total nitrogen (TN) varied from 0.26 to 10.84 g/kg,and the content of total phosphorus (TP) varied from 0.05 to 0.38 g/kg in different samples. Among them,total nitrogen and total phosphorus cont... |
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| Keywords: | Qinghai-Tibet Plateau sediment organic carbon nitrogen phosphorus |
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