藻类爆发对太湖梅梁湾水体中NPK含量的影响

应用生态学报 ›› 2003, Vol. ›› Issue (6): 969-972.

藻类爆发对太湖梅梁湾水体中NPK含量的影响

杨顶田^1,2, 陈伟民¹, 江晶^1,2, 季江¹, 曹文熙³

1. 中国科学院南京地理与湖泊研究所, 南京 210008;
2. 中国科学院研究生院, 北京 100039;
3. 中国科学院南海海洋研究所, 广州 510301

收稿日期:2001-12-16 修回日期:2002-09-01
通讯作者: 陈伟民
基金资助:
中国科学院知识创新工程资助项目(KZCX1SW12)

Effects of algal bloom on N,P and K contents in Meiliang Bay of Taihu Lake.

YANG Dingtian^1,2, CHEN Weimin¹, JIANG Jing^1,2, JI Jiang¹, CAO Wenxi ³

1. Institute of Nanjing Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;
3. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received:2001-12-16 Revised:2002-09-01

摘要/Abstract

摘要： 1998～2000年对太湖梅梁湾的实测结果表明,在一定范围内叶绿素a的含量与温度呈现明显的正相关;NH₄⁺-N和总氮(TN)、总磷(TP)含量在每年的八九月份最低,总含量与叶绿素a呈正相关,随着叶绿素a含量上升,N、P含量呈现下降趋势;K的含量与N、P相似.排污口的0号点和6号点的N、P含量相对于湖中心的8号样点来说极高,而且P已不是限制性营养元素,在其它水域,P依然是限制性营养元素,表明微囊藻(Microcystis spp.)只在TN含量为1～4mg·L^-1、TP在0.1～0.3mg·L^-1之间时爆发形成水华.

关键词: 叶绿素a, N, P, K, 微囊藻

Abstract: According to the measurements in Meiliang bay between1998～2000,the effects of algal bloom on N,P,and Kcontents were studied. The results showed that the relationship between the Chl a content and temperature was positive. The lowest contents of NH₄⁺-N,TN, and TP were obtained in August and September every year, and their total content was positively related to the Chl a content. The annual change of Kcontent was similar to that of N and P. Compared to the 8 th sampling point,the content of N and Pat 0^th and 6^th sampling point was higher,and P was not the limiting factor. But in other areas,P was the limiting factor. It also proved that Microcystis spp. grew to form water bloom only when Ncontent was between 1～4 mg·L^-1 and TPcontent was between0.1～0.3 mg·L^-1 .

Key words: Chl a, N, P, K, Microcystis spp

中图分类号:

P343.3

杨顶田, 陈伟民, 江晶, 季江, 曹文熙. 藻类爆发对太湖梅梁湾水体中NPK含量的影响[J]. 应用生态学报, 2003, (6): 969-972.

YANG Dingtian, CHEN Weimin, JIANG Jing, JI Jiang, CAO Wenxi . Effects of algal bloom on N,P and K contents in Meiliang Bay of Taihu Lake.[J]. Chinese Journal of Applied Ecology, 2003, (6): 969-972.

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