浅析灌江纳苗对天鹅洲湿地水质及泥沙的影响 (2006年)
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第 39 卷 第 3 期
2006 年 6 月
武汉大学学报
(
工学版
)
Engineering Journal of Wuhan University
Vol. 39 No. 3
June 2006
收稿日期 :2005210209
作者简介 :吴门伍
(
19762
)
,男 ,四川安岳人 ,博士 ,主要从事水力学及河流动力学研究.
基金项目 :973 项目
(
2003CB415205
)
、国家自然科学基金
(
50479036
)
、世界自然基金会汇丰银行长江项目资助.
文章编号 :167128844
(
2006
)
032036205
浅析灌江纳苗对天鹅洲湿地水质及泥沙的影响
吴门伍
1
, 陈 立
2
, 严 黎
2
, 邓晓丽
2
, 何小花
2
(
1. 珠江水利委员会珠江水利科学研究院 ,广东 广州 510611 ;
2. 武汉大学水资源与水电工程科学国家重点实验室 ,湖北 武汉 430072
)
摘要
:长江天鹅洲故道湿地是我国重要的淡水湿地类型之一 ,目前正处于由河道型湿地转向湖泊型湿地的过程之
中. 由于长江大堤的阻隔 ,故道与长江的水沙交换受到限制 ,引起一系列的水沙条件变化. 对天鹅洲故道水域及天
鹅洲闸前与长江相连的盲肠河段灌江纳苗前后水质、河道泥沙等进行了取样分析 ,实测资料分析显示 :灌江纳苗后
盲肠河段及故道 p H 值、总含盐量较灌江纳苗前有所降低 ;碱度、HCO
3
-
、Cl
-
浓度变化不大 ;总硬度、Ca
2 +
浓度稍微
加大. 且灌江纳苗在引入长江水的同时 ,也引入了部分泥沙并沉积在闸前盲肠河段及故道中.
关键词:灌江纳苗 ;天鹅洲湿地 ;水质 ;河道泥沙
中图分类号
: TV 145. 3
文献标识码 :
A
Analysis of effect of a doption of fries by filling with river flows on
water quality and sediment of Tianezhou wetland
WU Menwu
1
, CH EN Li
2
, YAN Li
2
, DEN G Xiaoli
2
, HE Xiaohua
2
(
1. Scientific Research Institute of PRWRC , Guangzhou 510611 , China ;
2. State Key Laboratory of Water Resources and Hydropower Engineering Science ,
Wuhan University ,Wuhan 430072 , China
)
Abstract : The Tianezhou ancient course wetland is one of the important freshwater wetland in China. It
is changing from river wetland to lake wetland at present. Because of obstructing by the Yangtze River
Dike , the exchange of water and sediment between the ancient course and Yangtze River are limited ,
leading the water and sediment having much changes. Before and after adoption of fries by filling with
river flows , the water quality and sediment of the ancient course and the cecum reach that connect the
Tianezhou gate and the Yangtze River are analyzed. The result shows that p H and total salinity have de2
creased ; the alkalinity and concentration of HCO
3
-
and Cl
-
have little changed ; the total hardness and
concentration of Ca
2 +
have increased in the cecum reach and the ancient course after adopting fries by
filling with river flows. When adoption of fries by filling with river flows , sediment is adopted and sedi2
mentated in the cecum reach and the ancient course at the same time of indraught water.
Key words : adoption of fries by filling with river flows ; Tianezhou wetland ; water quality ; sediment
湿地是自然界生物多样性最丰富的生态景观
和人类社会赖以生存和发展的环境之一 ,是地球上
具有多种功能的独特生态系统. 湿地一方面向人类
提供水资源和大量的食物与原料 ;另一方面 ,在保
持生物多样性和珍稀物种资源 ,以及在阻止和延缓
洪水、蓄水抗旱、控制水土流失和降解环境污染、提
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