鄱阳湖通江水道鱼类空间分布特征及资源量评估
Spatial distribution and biomass assessment of fish in the channel connecting the Lake Poyang and the Yangtze River
查看参考文献38篇
|
文摘
|
于2014年9月24至26日在鄱阳湖通江水道湖口至屏峰段使用SIMRAD EY60回声探测仪对鱼类资源进行水声学调查.结果显示,鄱阳湖通江水道鱼类目标强度平均值为-56.4±6.4 dB,范围为-69.9~-32.1 dB;估算的平均全长为7.6 cm,范围为1.2~98.0 cm;鱼类资源的平均密度为53.7 ind./1000 m~3,范围为0~441.7 ind./1000 m~3.在水平分布上,鱼类主要分布在湖口县、鞋山和屏峰附近3个水域.区域Ⅰ和区域Ⅲ的鱼类密度显著高于区域Ⅱ的鱼类密度;区域Ⅲ的鱼类个体大小显著小于区域Ⅰ和区域Ⅱ.在垂直分布上,多数鱼类栖息于主河槽的深水区,且大个体更倾向于深水区.在此基础上,利用ArcGIS地统计插值方法估算鄱阳湖通江水道湖口至屏峰山水域鱼类总数量约为6.2×10~7 ind.,总生物量约620 t.结果表明,鄱阳湖通江水道是鱼类重要的栖息地,建议加强该水域的保护,保持鄱阳湖与长江的自然连通. |
|
其他语种文摘
|
Channels between lakes and rivers play a crucial role in maintaining fish population dynamics and their diversity in floodplains. In order to better understand the spatial distribution and the biomass of fish in the channel connecting the Lake Poyang and the Yangtze River, a mobile hydroacoustic survey was conducted in September 2014, using Simrad EY60 split-beam echo sounder (200 kHz).The spatial distribution of fish density and biomass for each cell of the studied region was derived from the spatial interpolation with geostatistics of ArcGIS. The results showed that the mean target strength (TS) in the investigated areas is -56.4±6.4 dB and the mean total length is about 7.6 cm, ranging from 1.2 to 98.0 cm. Average fish density in the channel was 53.7 ind./1000 m~3, ranging from 0-441.7 ind./1000 m~3. Horizontally, fish assemblages were unevenly distributed in the investigated areas and concentrated mainly in three areas, that is, the section near Hukou Country, Xieshan and Pingfeng Hill, respectively. The most striking feature in fish density was the concave-shaped distribution in the channel along the water flow direction (from lake to river).The fish size (total length) in the area near Lake Poyang (Area Ⅲ) was significantly smaller than that in the waters near Yangtze River (Area Ⅰ) and the transition zones (Area Ⅱ). One possible reason for this might be a large number of young-of-the-year fish emerged after spawning period. Fish density increased vertically from the upper layer of the water to the lower layers. Meanwhile, our results supported the generality of the phenomenon of increasing fish size with increasing depth (i.e., bigger-deeper phenomenon). In addition, the total amount of fish biomass in the investigated area was estimated to be 6.2×10~7 ind., up to 620 tons. Our findings suggested the need to enhance the protection for these essential fish habitats. This study also contributes to the knowledge of the current state of fish resources and can be useful for proper resources conservation and effective ecosystem management of the floodplain biodiversity. |
|
来源
|
湖泊科学
,2017,29(4):923-931 【核心库】
|
|
DOI
|
10.18307/2017.0416
|
|
关键词
|
鄱阳湖
;
通江水道
;
生态通道
;
水声学
;
空间分布特征
;
鱼类资源量
|
|
地址
|
1.
江西省水产科学研究所, 南昌, 330039
2.
中国科学院水生生物研究所, 中国科学院水生生物多样性与保护重点实验室, 武汉, 430072
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1003-5427 |
|
学科
|
水产、渔业 |
|
基金
|
江西省科技厅重大项目
|
|
文献收藏号
|
CSCD:6022629
|
参考文献 共
38
共2页
|
|
1.
张堂林. 鄱阳湖鱼类资源及渔业利用.
湖泊科学,2007,19(4):434-444
|
被引
47
次
|
|
|
|
|
2.
陈宜瑜. 长江中下游泛滥平原环境结构改变与湿地丧失.
中国湿地研究,1995:153-160
|
被引
16
次
|
|
|
|
|
3.
常剑波. 通江湖泊的渔业意义及其资源管理对策.
长江流域资源与环境,1999,8(2):153-157
|
被引
50
次
|
|
|
|
|
4.
吴瑞金. 我国湖泊资源环境现状与对策.
中国科学院院刊,2001,16(3):176-181
|
被引
12
次
|
|
|
|
|
5.
黄晓平. 鄱阳湖渔业资源现状与养护对策研究.
江西水产科技,2007(4):2-6
|
被引
12
次
|
|
|
|
|
6.
胡茂林. 鄱阳湖湖口水域鱼类群落结构及种类多样性.
湖泊科学,2011,23(2):246-250
|
被引
25
次
|
|
|
|
|
7.
唐琼英. "休渔十年"何时实现-长江鱼类多样性及长江渔业.
大自然,2014,2:8-11
|
被引
1
次
|
|
|
|
|
8.
Simmonds J.
Fisheries acoustics:Theory and practice,2005:437
|
被引
1
次
|
|
|
|
|
9.
Tao J. Spatiotemporal patterns of the fish assemblages downstream of the Gezhouba Dam on the Yan-gtze River.
Science China Life Sciences,2012,55(7):626-636
|
被引
3
次
|
|
|
|
|
10.
Lin P C. Hydroacoustic survey on the spatial distribution pattern and day-night rhythmic behaviour of fishes in the Xiaonanhai reach of the upper Yangtze River.
Journal of Applied Ichthyology,2013,29(6):1402-1407
|
被引
1
次
|
|
|
|
|
11.
Lin P C. Species composition and temporal pattern of fish passing through the navigation locks in the middle reach of Yangtze River:Implications for fish conservation.
Journal of Applied Ichthyology,2013,29(6):1441-1444
|
被引
1
次
|
|
|
|
|
12.
Sun M. Hydroacoustic surveys on temporal and spatial distribution of fishes in the section from Chenglingji to Yichang of the Yangtze River middle reaches.
Journal of Applied Ichthyology,2013,29(6):1459-1462
|
被引
1
次
|
|
|
|
|
13.
任玉芹. 三峡库区澎溪河鱼类时空分布特征的水声学研究.
生态学报,2012,32(6):1734-1744
|
被引
20
次
|
|
|
|
|
14.
连玉喜. 基于水声学探测的香溪河鱼类资源时空分布特征评估.
水生生物学报,2015,39(5):920-929
|
被引
21
次
|
|
|
|
|
15.
牟洪民. 红枫湖鱼类资源及空间分布的水声学调查研究.
南方水产科学,2012,8(4):62-69
|
被引
8
次
|
|
|
|
|
16.
孙明波. 基于水声学方法的天目湖鱼类资源捕捞与放流的生态监测.
生态学报,2013,33(23):7553-7562
|
被引
3
次
|
|
|
|
|
17.
孙明波. 不同渔业方式水库鱼类资源的水声学评估.
应用生态学报,2013,24(1):235-242
|
被引
5
次
|
|
|
|
|
18.
鄱阳湖研究编委会.
鄱阳湖研究,1988
|
被引
42
次
|
|
|
|
|
19.
黎明政.
长江鱼类生活史对策及其早期生活史阶段对环境的适应[学位论文],2012
|
被引
3
次
|
|
|
|
|
20.
杨少荣. 鄱阳湖鱼类群落结构及其时空动态.
长江流域资源与环境,2015,24(1):54-64
|
被引
26
次
|
|
|
|
|
了解气象卫星更多信息，请访问