第
27
卷 第
1
期
环境科学研究
VoL27 ,No. 1
2014
年
1
月
Research of Environmental Sciences Jan. ,2014
贾永见,储昭升,叶碧碧,等华耳海湖滨带不同基底高程下菰出苗及生长特征(
J).
环境科学研究
,2014 ,27(1 ):12-17.
JIA Yongjian,CHU Zhaosheng, YE Bibi,ei
al.
Emergence and growth characteristics of
Zizania caducifiora
in different base elevations in Erhai lakeshore[ J).
Research of Environmental Sciences
,
2014,27 ( 1)
:
12-17.
洱海湖滨带不同基底高程下菰出苗及生长特征
贾永见1
2
3 ,
储昭升1
2 !
,
叶碧碧1
2 ,
尹延震1
2 ,
吴爱平1
2
4 ,
程 凯 3
1.中国环境科学研究院湖泊创新基地,国家环境保护湖泊污染控制重点实验室,北 京 100012
2
.
中国环境科学研究院,环境基准与风险评估国家重点实验室,北 京 100012
3.
华中师范大学生命科学学院,湖 北 武 汉
430000
4
.湖南农业大学生物科学技术学院生态研究所,湖 南 长 沙
410128
摘要:为研究洱海不同类型湖滨带菰( Z iz a n " cadudflora)的出苗及生长的特征,在 2010年
3
月和6 月( 菰的主要出苗和生长季
节)调查洱海湖湾型和非湖湾型湖滨带不同基底高程上菰生物量、密度、植株叶片数、植株高度等的变化,分析洱海水位变化的影
响
.
结果表明:随着湖滨带基底高程的降低,洱海湖滨带菰的密度、生物量、单株叶片数呈先增高后快速降低趋势,株高则呈增大
后基本不变的趋势
;
从株密度及生物量看,随着
3 —
6 月洱海水位的降低,湖湾型和非湖湾型湖滨带菰生长的最适基底高程都随
之下降,
3
月为
1 964. 85 m
,6 月为
1 964.55 m
,所对应的水深均为
0. 3 m. 3
月和6 月湖湾型湖滨带能够出苗良好的基底高程比
非湖湾型分别低了
0.3
和0.6
m;
随着水位的下降,湖湾型湖滨带菰出苗良好的范围向水下延伸,但在非湖湾型湖滨带,出苗良好
的最低高程几乎不变
.
湖湾型和非湖湾型湖滨带菰出苗和生长的差异显示出其影响因素不同,在湖湾型湖滨带,水深动态变化
是主要影响因子,而在非湖湾型湖滨带,风浪作用和水深动态变化存在共同作用
.
关键词:菰;基底高程;出苗;生长;洱海
中图分类号!
X171
文章编号:
1001 -6929(2014)01 -0012 -06
文献标志码:
A DOI
:
10. 13198/j. issn. 1001-6929. 2014. 01. 03
Emergence and Growth Characteristics of Zizania caducifiora in Different Base
Elevations in Erhai Lakeshore
JIA Yong-jian1 2 3,CHU Zhao-sheng1,2,YE Bi-bi12,YIN Yan-zheng1,2,W U Ai-ping1,2 4,C H ENG Kai3
1. State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-environment,Chinese Research
Academy of Environmental Sciences, Beijing 100012
,
China
2. State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences, Beijing
100012% China
3. College of Life science, Central China Normal University, Wuhan 430000
,
China
4. Institute of Ecology, College of Bioscience and Biotechnology, Hunan Agriculture University, Changsha 410128
,
China
Abstract
:
Emergent aquatic plants are the most important plants in riparian areas. Effects of water level on biomass, density, leaf number
and plant height of
Zizania caducifiora
were investigated in Erhai lakeshore in March and June
,
2010. The results showed that plant
density,biomass and plant leaf number of
Z. caducifiora
increased first and then decreased
,
while the plant height increased and
remained stable with the base elevation decreased. The best base elevation for emergence and growth of
Z. caducifiora
in March and in
June were 1964. 85 m and 1964. 55 m respectively in 0. 3 m water depth with no significant difference between in and out lake bays.
However, the lowest base elevation ( 1963. 65 m) for
Z. caducifiora
in lakeshore in lake bays was 0. 3 and 0.
6
m smaller than those out
of bays. In addition
,
the plant height of
Z. caducifiora
in lake
收稿日期:
2013 -03 -01
修订日期:
2013 - 10 - 30
基金项目:国家水体污染控制与治理科技重大专项(
2008ZX07105 -
004)
作者筒介:贾永见
(1985 -)
,男,河南平顶山人,
jiayongjian@gmail.com.
!
责任作者,储昭升
(1973 -)
,男,安徽安庆人,研究员,博士,主要从
bays was significantly higher than those out of bays. The
differences between lakeshores in and out lake bays indicated that
wave could greatly inhibit the emergence and growth of
Z.
caducifiora
in lakeshore.
Key words
:
Zizania caducifiora
;
base elevation
;
emergence
;
事湖泊富营养化研究,
chuzs@ craes. org. cn
growth
;
Lake Erhai