对枫杨1年生幼苗9—11月在4组总氮(TN,质量浓度分别为 20、300、400和800 mg／L)和总磷(TP,质量浓度分别为04、80、150和250 mg／L)的模拟富营养化水中的生长状况、形态变化及其对各浓度富营养化水中TN、TP的去除效果进行了研究。结果表明:枫杨对富营养化水适应性较强,在不同浓度的富营养化水中形态生长状况良好,株高、基径、叶片数均有不同程度的增长;对不同浓度富营养化水中的TN和TP净化效果良好,平均去除率分别为831 ％与2379 ％,其中对低浓度富营养化水中的TN、TP去除效果最佳,平均去除率分别高达1706 ％和 4086％。由此可知，枫杨是值得大力推广的净化富营养化水中TN与TP的湿生乡土树种。
Abstract
This paper investigated the morphologic changes and the uptake effect on TN and TP in eutrophic water by using oneyear seedlings of Pterocarya stenoptera, which were planted in 4 treatments of simulated eutrophic water with various concentration of TN as 20,300,400, 800 mg／L and TP as 04,80,150,250 mg／L respectively from September to November, 2009. Results showed that P. stenoptera had rather strong adaptability to the eutrophic water, and they grew well in it, with height, stem base diameter, leaves number increase more or less. P. stenoptera demonstrated a good removal effect on TN and TP of 4 different concentrations, with the average uptake rates 831 ％ and 2379 ％, among which the best uptake capacity for TN, TP appeared when they were in the lowest concentration, reached 1706 ％ and 4086％ on average. All the results indicated that P. stenoptera was an applicable wetland regional tree species in the eutrophic water.
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基金
收稿日期：2010-09-05 修回日期：2011-04-02基金项目：金陵科技学院博士科研启动基金项目(JIT-B-2009002)作者简介：童丽丽(1970—),副教授,博士。*阮宏华(通信作者)，教授。Email:hruan1690@yahoo.com。
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