近50年来环境变化对巢湖硅藻组合演替的影响

被引：13

作者：

陈旭 ^{[1
,2
]}

羊向东 ^{[1
]}

董旭辉 ^{[1
]}

刘恩峰 ^{[1
]}

机构：

[1] 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室

[2] 中国科学院研究生院

来源：

湖泊科学 | 2011年 / 23卷 / 05期

关键词：

硅藻组合; 营养; 水文; 气候; 冗余分析; 巢湖;

D O I：

暂无

中图分类号：

Q948 [植物生态学和植物地理学]; X171 [生态系统与污染生态学];

学科分类号：

071012 ; 0713 ;

摘要：

湖泊生态系统往往受营养、水文和气候等诸多环境因子的影响.区分不同环境因子的影响是揭示湖泊生态环境演化机制的关键.本文基于巢湖岩芯210Pb和137Cs测年、硅藻、地球化学指标和粒度分析结果以及流域水文、气候、人口和农业资料,利用冗余分析,定量区分1950年来营养、水文和气候对硅藻组合演替的影响.1978年前硅藻组合中Aulacoseiragranulata占绝对优势,此后耐营养种Cyclostephanos dubius大量出现.2000年以来C.dubius占绝对优势,并伴随Cyclosteph-anos tholiformis和Stephanodiscus parvus等其它耐营养种增加.结果表明,沉积物TP、TN、年均温、年均风速和水位变幅是影响硅藻组合演替的五个显著变量,它们分别单独解释硅藻组合方差的6.5%、4.7%、4.5%、4.7%和3.0%.这表明近50年来营养是巢湖硅藻组合演替的决定因素,水文过程和气候变化也是硅藻组合演替的重要诱因.

引用

页码：665 / 672

页数：8

共 23 条

[11] The hydrological regime and particulate size control phosphorus form in the suspended solid fraction in the dammed Huanghe (Yellow River) [J].

He Huijun ;

Yu Zhigang ;

Yao Qingzheng ;

Chen Hongtao ;

Mi Tiezhu .

HYDROBIOLOGIA, 2010, 638 (01) :203-211

[12]

Paleolimnological evidence of the effects on lakes of energy and mass transfer from climate and humans[J] . Peter R. Leavitt,S. C. Fritz,N. J. Anderson,P. A. Baker,T. Blenckner,L. Bunting,J. Catalan,D. J. Conley,W. O. Hobbs,E. Jeppesen,A. Korhola,S. McGowan,K. Rühland,J A. Rusak,G. L. Simpson,N. Solovieva,J. Werne.Limnology and Oceanography . 2009 (6par)

[13]

Diatom evidence for the timing and causes of eutrophication in Lake Victoria, East Africa[J] . J. Curt Stager,Robert E. Hecky,Dustin Grzesik,Brian F. Cumming,Hedy Kling.Hydrobiologia . 2009 (1)

[14] Interactive effects of environmental variability and human impacts on the long-term dynamics of an Amazonian floodplain lake and a South Atlantic coastal lagoon [J].

Bozelli, Reinaldo L. ;

Caliman, Adriano ;

Guariento, Rafael D. ;

Carneiro, Luciana S. ;

Santangelo, Jayme M. ;

Figueiredo-Barros, Marcos P. ;

Leal, Joao J. F. ;

Rocha, Adriana M. ;

Quesado, Leticia B. ;

Lopes, Paloma M. ;

Farjalla, Vinicius F. ;

Marinho, Claudio C. ;

Roland, Fabio ;

Esteves, Francisco A. .

LIMNOLOGICA, 2009, 39 (04) :306-313

[15] Role of flood storage ability of lakes in the Changjiang River catchment [J].

Nakayama, T. ;

Watanabe, M. .

GLOBAL AND PLANETARY CHANGE, 2008, 63 (01) :9-22

[16]

Effects of biological activity, light, temperature and oxygen on phosphorus release processes at the sediment and water interface of Taihu Lake, China[J] . Xia Jiang,Xiangcan Jin,Yang Yao,Lihe Li,Fengchang Wu.Water Research . 2008 (8)

[17] Climate versus in-lake processes as controls on the development of community structure in a low-arctic lake (South-West greenland) [J].

Anderson, N. John ;

Brodersen, Klaus P. ;

Ryves, David B. ;

McGowan, Suzanne ;

Johansson, Liselotte S. ;

Jeppesen, Erik ;

Leng, Melanie J. .

ECOSYSTEMS, 2008, 11 (02) :307-324

[18]

Tracking eutrophication in Taihu Lake using the diatom record: potential and problems[J] . Xuhui Dong,Helen Bennion,Rick Battarbee,Xiangdong Yang,Handong Yang,Enfeng Liu.Journal of Paleolimnology . 2008 (1)

[19]

中国湖泊志. 王苏民,窦鸿身. 科学出版社 . 1998

[20]

Climate change impacts on freshwater ecosystems. Jeppesen E,Moss B,Bennion Het al. Wiley-Blackwell . 2010

← 1 2 3 →