贵州农业科学
貴州農業科學
귀주농업과학
GUIZHOU AGRICULTURAL SCIENCES
2015年
5期
208-211
,共4页
赤水河%着生藻类%多样性指数%水质评价%贵州
赤水河%著生藻類%多樣性指數%水質評價%貴州
적수하%착생조류%다양성지수%수질평개%귀주
Chishui River%periphytic algae%diversity index%water quality%Guizhou
为赤水河赤水市河段的生态保护提供科学数据，通过设置不同代表性采样断面（采样点），对赤水河赤水市河段的着生藻类的种类组成等生物学指标进行采样调查与分析。结果表明：共鉴定出着生藻类5门8纲18目28科44属114种；着生藻类群落主要由硅藻组成，其次是蓝藻和绿藻。复兴镇以上河段主要以硅藻门的系带舟形藻（Navicula．cincta）、嗜盐舟形藻（Navicula．halophila）和变异直链藻（Melosira varians ）为优势种，在复兴镇及其以下河段以绿藻门的泥泞颤藻（Oscillatoria limosa ）占绝对优势，赤水中采样点以钝脆杆藻（Fragilaria capucina ）为优势种，大同镇采样点以硅藻中的放射舟形藻（Navicula radiosa ）及钝脆杆藻（Fragilaria capucina ）为优势种。细胞密度为（0．78～3．66）×106 cells／cm2，平均为2．10×106 cells／cm2；多样性指数为1．78～3．12。赤水河赤水市河段水体水质已受到轻度污染。
為赤水河赤水市河段的生態保護提供科學數據，通過設置不同代錶性採樣斷麵（採樣點），對赤水河赤水市河段的著生藻類的種類組成等生物學指標進行採樣調查與分析。結果錶明：共鑒定齣著生藻類5門8綱18目28科44屬114種；著生藻類群落主要由硅藻組成，其次是藍藻和綠藻。複興鎮以上河段主要以硅藻門的繫帶舟形藻（Navicula．cincta）、嗜鹽舟形藻（Navicula．halophila）和變異直鏈藻（Melosira varians ）為優勢種，在複興鎮及其以下河段以綠藻門的泥濘顫藻（Oscillatoria limosa ）佔絕對優勢，赤水中採樣點以鈍脆桿藻（Fragilaria capucina ）為優勢種，大同鎮採樣點以硅藻中的放射舟形藻（Navicula radiosa ）及鈍脆桿藻（Fragilaria capucina ）為優勢種。細胞密度為（0．78～3．66）×106 cells／cm2，平均為2．10×106 cells／cm2；多樣性指數為1．78～3．12。赤水河赤水市河段水體水質已受到輕度汙染。
위적수하적수시하단적생태보호제공과학수거，통과설치불동대표성채양단면（채양점），대적수하적수시하단적착생조류적충류조성등생물학지표진행채양조사여분석。결과표명：공감정출착생조류5문8강18목28과44속114충；착생조류군락주요유규조조성，기차시람조화록조。복흥진이상하단주요이규조문적계대주형조（Navicula．cincta）、기염주형조（Navicula．halophila）화변이직련조（Melosira varians ）위우세충，재복흥진급기이하하단이록조문적니저전조（Oscillatoria limosa ）점절대우세，적수중채양점이둔취간조（Fragilaria capucina ）위우세충，대동진채양점이규조중적방사주형조（Navicula radiosa ）급둔취간조（Fragilaria capucina ）위우세충。세포밀도위（0．78～3．66）×106 cells／cm2，평균위2．10×106 cells／cm2；다양성지수위1．78～3．12。적수하적수시하단수체수질이수도경도오염。
The composition of periphytic algae species in Chishui reach of Chishui River was investigated and analyzed by setting up different sampling sites to provide the scientific basis for ecological protection of Chishui reach of Chishui River.Results:114 species,44 genera,28 families,18 orders,8 classes,5 phyla are identified and the periphytic algae community is mainly composed of diatoms,followed blue-green algae and green algae.The cell density is (0.78~3.66)×10 6 cells/cm2 with an average of 2.10 ×106 cells/cm2..The dominant species of periphytic algae in upper reach of Fuxing Town are Navicula. cincta,Navicula.halophila and Melosira varians .The dominant species of periphytic algae in down reach of Fuxing Town and reach of Fuxing Town is O.limosa.The dominant species of periphytic algae in middle reach of Chishui City is Fragilaria capucina .The dominant species of periphytic algae in reach of Datong Town are Navicula radiosa and Fragilaria capucina .The diversity index of periphytic algae species in Chishui reach of Chishui River is 1.78~3.12,which indicates that the water quality is polluted mildly.
