富营养条件下酸雨对两种湿生植物硝酸还原酶活性的影响  

The effects of simulated acid rain on the nitrate reductase activities of Acorus gramineus and Saururus chinensis under eutrophication

作　　者：尹璐[1] 薛建辉[1] 罗英[1] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2014年第1期65-69,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：江苏省高校自然科学基金项目(12KJA220003);国家林业公益性行业科研专项项目(200904001-3)

摘　　要：采用水培试验法,研究模拟酸雨(pH=2.0,pH=3.5)在富营养条件下对石菖蒲及三白草叶片的硝酸还原酶活性的影响。结果表明:富营养化对石菖蒲及三白草叶片硝酸还原酶活性产生极显著影响(p<0.01),随着富营养化水平的提高,植物叶片硝酸还原酶活性呈现先上升后下降趋势;酸雨处理对石菖蒲及三白草叶片硝酸还原酶活性影响未达显著水平,但随酸雨浓度的增加,石菖蒲及三白草硝酸还原酶活性呈现逐渐降低的趋势;另外,随着酸雨次数的增加,石菖蒲及三白草叶片硝酸还原酶活性逐渐降低。Based on a hydroponic experiment, the effect of the simulated acid rain（pH2.0 and pH3.5）was investigated on the nitrate reductase activities of leaves in Acorus gramineus and Saururus chinensis. The main results were described as follows ： （ 1 ） There existed extremely significant impact on the leaf nitrate reductase activity for both aquatic plants caused by eutrophication treatment（ three levels） ; with the increase of eutrophication level the leaf nitrate reductase ac- tivity increased first and then decreased afterwards. （2） There was no significant impact on the leaf nitrate reductase ac- tivity for both aquatic plants caused by the simulated acid rain （pH2. 0 and pH3.5）. With the increase of acid rain con- centration level. The leaf nitrate reductase activity represented a decreasing trend; the leaf nitrate reductase activity of Acorus gramineus and Saururus chinensis reduced with increase of acid rain processing times.

关 键 词：石菖蒲 三白草 硝酸还原酶活性 酸雨 富营养化水平 

分 类 号：S718[农业科学—林学]