猫跳河流域梯级水库磷的夏季变化特征  

CHANGE CHARACTERISTICS OF PHOSPHORUS IN CASCADE RESERVOIRS ON MAOTIAO RIVER SYSTEM IN SUMMER

作　　者：黎慧卉[1] 刘丛强[2] 汪福顺[3] 吴攀[1] 王宝利[2] 张翅鹏[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550003 [2]中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002 [3]上海大学化学与环境学院,上海201800

出　　处：《长江流域资源与环境》2009年第4期368-372,共5页Resources and Environment in the Yangtze Basin

基　　金：国家自然科学基金项目(90610037和40571158);中国科学院创新团队国际合作伙伴计划项目;国家重点基础发展研究计划项目(973项目)(2006CB403205)联合资助

摘　　要：调查了我国第一条全流域梯级水电开发的河流——猫跳河中梯级水库对磷的拦截效应。于2007年丰水期7～9月在猫跳河流域采集水库坝前分层水样以及下泄水，分析和测试水样中的总磷和正磷酸盐。结果表明：丰水期猫跳河流域梯级水库内部总磷和可溶性正磷酸盐变化趋势相似，而下泄水的磷含量均大于该水库表层水体的磷含量。在猫跳河流域的梯级水库中，上游水库（红枫湖和百花湖）的磷含量明显高于各下游水库，即猫跳河流域各水库顺水流方向磷含量具有逐渐减少的特征，说明该流域梯级水库开发对于全流域磷具有梯级拦截效应；另一方面，各水库的富营养化指数表明该流域各水库均处于较高的富营养化状态，全流域富营养化状态差别与磷的分布特征相似，表现为顺水流方向减弱的规律。The study investigated the phosphorus retention effects of cascade reservoirs of Maotiao River in summer,which had been entirely exploited by 1960s. In order to find out the rules of phosphorus retention effects,the water samples in the front of the dams by layers and outflow water of each reservoir were collected in cascade reservoirs in Maotiao River from July to September, 2007. The total phosphorus and dissolved PO4-P were analyzed in the laboratory. Results showed that the changes of total phosphorus are similar to dissolved PO4-P in each reservoir, while the concentrations of dissolved PO4-P and total phosphorus in release water were higher than that of their surface water. The concentrations of phosphorus in Hongfeng and Baihua reservoirs were higher than the other reservoirs,the P concentration was gradually reduced from upstream to downstream. Meanwhile, this characteristic was similar to the index of eutrophication. As Maotiao River＇s concerned, the exploitation of cascade reservoirs do have a certain retention effects on phosphorus.

关 键 词：猫跳河 梯级水库 磷 截留效应 

分 类 号：X131.1[环境科学与工程—环境科学] TV697.11[水利工程—水利水电工程]