汉江中下游早春冠盘藻(Stephanodiscus hantzschii)水华暴发过程及其成因初探
STEPHANODISCUS HANTZSCHIIBLOOM IN THE HANJIANG RIVER:SPATIO-TEMPORAL DISTRIBUTION AND POSSIBLE DRIVING FORCES
查看参考文献27篇
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文摘
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近年来汉江中下游早春频繁暴发硅藻水华,为探明汉江早春硅藻水华暴发过程及原因,2010年1月1日~3月6日,对汉江干流及部分支流进行了浮游植物采样调查.结果表明,早春期间汉江干,支流的浮游植物密度分布具有明显的空间差异性:襄樊及以上各个站点浮游植物密度明显低于襄樊以下,汉江干流各个站点的浮游植物密度明显低于入汉江支流----唐白河.1月7日,唐白河站点浮游植物的密度最高,达50.50×106个/L,冠盘藻的比例占96.09%;从1月27日开始,汉江干流开始出现水华(14.42×106个/L),2月23日达到峰值(24.66×106个/L),到3月3日,水华开始消退(6.66×106个/L),前后共持续了1个多月.相关分析表明,汉江早春期间藻体密度与DO(溶解氧),STN(溶解性总氮),STP(溶解性总磷)有着极显著的正相关(Pearson(DO),r=0.63,p<0.01;Pearson(STN),r=0.85,p<0.01;Pearson(STP),r=0.77,p<0.01),与SD(透明度)有极显著的负相关关系(Pearson,r=-0.44,p<0.01),而与水体中的SSi(溶解性硅)呈显著的负相关(Pearson,r=-0.35,p<0.05).依据汉江干,支流优势硅藻密度的时空差异,可以推测,唐白河中高密度的冠盘藻可能是汉江中下游水华暴发的种源之一;同时分析指出,2010年早春汉江中下游干流水华生消与气象因素密切关联 |
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其他语种文摘
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Since 1990s, Stephanodiscus hantzschii bloom occurred frequently in the middle-down reaches of the Hanjiang River during the early spring. From January 1st to March 6th 2010, investigaitons were performed to study phytoplankton spatio-temporal distribution in the Hanjiang River basin. During the study period,we found that phytoplankton density at upstream of Xiangfan City were significantly lower than that at downstream, and the density of phytoplankton in mainstream of the Hanjiang River were significantly lower than that of its branch:Tangbai River. On January 7th, the highest density of total phytoplankton reached 50.50×106 ind./L,at site of the Tangbai River,of which the Stephanodiscus hantzschii occupied 96.09%. From January 27th, algal bloom appeared in the mainstream, with average phytoplankton density of 14.42×106 ind./L, and increased to 24.66 ×106 ind./L on February 23, then declined to 6.6×106 ind./L on March 3rd. Correlation analysis indicated that phytoplankton density had siginificant positive correlations with dissolved oxygen(DO)(Pearson,r=0.63 p<0.05), soluble total nitrogen(STN)(Pearson,r=0.85,p<0.01)and soluble total phosphorus(STP)(Pearson,r=0.77,p<0.01), but extremely significant negative correlation with water transparence(SD)(Pearson,r=-0.44,p<0.01), and significant negative with soluble silicate(SSi)(Pearson,r=-0.35,p<0.05). Based on the spatio-temporal pattern of phytoplankton,it was proposed that the higher density of Stephanodiscus hantzschii in the Tangbai River may serve as a crucial seed bank for the outbreak of Stephanodiscus hantzschii bloom in the middle-down reaches of the Hanjing River. The duration of the early-spring Stephanodiscus hantzschii bloom was also significantly influenced by the weather condition of the Hanjiang River basin |
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来源
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长江流域资源与环境
,2011,20(4):451-458 【核心库】
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关键词
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汉江
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浮游植物
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冠盘藻
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硅藻水华
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地址
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中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 湖北, 武汉, 430072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1004-8227 |
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学科
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环境保护管理 |
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基金
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国家973计划
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文献收藏号
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CSCD:4176430
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参考文献 共
27
共2页
|
|
1.
谢敏. 汉江中下游"水华"成因分析及其对策初探.
人民长江,2006,37:43-45
|
被引
10
次
|
|
|
|
|
2.
况琪军. 汉江中下游江段藻类现状调查及“水华”成因分析.
长江流域资源与环境,2000,9:63-70
|
被引
37
次
|
|
|
|
|
3.
王红萍. 汉江水华水文因素作用机理.
长江流域资源与环境,2004,13:282-285
|
被引
48
次
|
|
|
|
|
4.
谢平. 南水北调中线工程不同调水方案下的汉江水华发生概率计算模型.
水利学报,2005,36:727-732
|
被引
8
次
|
|
|
|
|
5.
谢平. 南水北调中线不同调水方案下的汉江水华发生概率分析.
环境科学学报,2005,25:1343-1348
|
被引
3
次
|
|
|
|
|
6.
刘强. 南水北调工程实施后汉江水华发生可能性研究.
长江流域资源与环境,2005,14:60-65
|
被引
4
次
|
|
|
|
|
7.
戴昌军. 实施联合水量调配防止汉江中下游产生水华.
湖北水力发电,2008,1:62-68
|
被引
1
次
|
|
|
|
|
8.
HA K. The phytoplankton succession in the lower part of hypertrophic Nakdong River(Mulgum), South Korea.
Hydrobiologia,1998,369:217-227
|
被引
9
次
|
|
|
|
|
9.
HA K. Winter Stephanodiscus bloom development in the Nakdong River regulated by an estuary dam and tributaries.
Hydrobiologia,2003,506:221-227
|
被引
6
次
|
|
|
|
|
10.
BLEIKER W. Light climate as the key factor controlling the spring dynamics of phytoplankton in Lake Zurich.
Aquatic Sciences,1997,59:135-157
|
被引
3
次
|
|
|
|
|
11.
ARHONDITSIS G. Environmental control and limnological impacts of a large recurrent spring bloom in Lake Washington,USA.
Environmental Management,2003,31:603-618
|
被引
5
次
|
|
|
|
|
12.
齐雨藻.
中国淡水藻志------硅藻门中心纲,1995
|
被引
1
次
|
|
|
|
|
13.
郑凌凌. 汉江硅藻水华优势种的形态及18S rDNA序列分析.
水生生物学报,2009,33(3):562-564
|
被引
10
次
|
|
|
|
|
14.
胡鸿钧.
中国淡水藻类------系统,分类及生态,2006
|
被引
5
次
|
|
|
|
|
15.
李才媛. 近30多年汉江流域面雨量时空变化特征分析.
湖北气象,2004,4:6-9
|
被引
1
次
|
|
|
|
|
16.
ZENG H. Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons.
Science of the Total Environment,2006,367:999-1009
|
被引
34
次
|
|
|
|
|
17.
曾辉. 三峡水库“水华”成因初探.
长江流域资源与环境,2007,16:336-339
|
被引
34
次
|
|
|
|
|
18.
汤宏波. 三峡库区高岚河甲藻水华的初步研究.
水生生物学报,2006,30:47-51
|
被引
27
次
|
|
|
|
|
19.
陈根祥. 汉江发生"水华"的水文因素.
长江职工大学学报,2002,19:57-58
|
被引
11
次
|
|
|
|
|
20.
卢大远. 汉江下游突发“水华”的调查研究.
环境科学研究,2000,13:28-31
|
被引
27
次
|
|
|
|
|
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