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模拟酸雨对水芹根部NH+4、NO-3、H+ 离子通量的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年02期
Page:
101-105
Column:
城镇绿地特殊生境生态修复关键技术研究专栏
publishdate:
2012-04-10

Article Info:/Info

Title:
Effects of simulated acid rain on NH+4,NO-3,H+ ion fluxes in roots of Oenanthe javanica
Author(s):
LUO Ying12 XUE Jianhui1* YIN Lu1 WU Dianming1
1. College of Forest Resources and Environment, Nanjing Forestry University,Nanjing 210037, China; 2. Department of Engineering and Technology,Xiamen City University, Xiamen 361008, China
Keywords:
simulated acid rain Oenanthe javanica ion fluxes eutrophication root activity
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2012.02.021
Document Code:
A
Abstract:
Nitrogen is necessary for plant growth of the nutritional elements. To absorb Nitrogen from eutrophicational water by using aquatic plants is important means to ecological restoration. Acid rain has become a serious region environment problem. China is the third acid rain area in the world. It should be further studied that how aquatic plants responded with simulated acid rain, and how acid rain effected on the nutrition cycle of roots. It was significant for the further physiological and ecological studies on the interrelationship between acid rain and aquatic plants in acid rain region. In this study, Oenanthe javanica was selected as research material to study the effects of simulated acid rain on H+, NH+4, NO-3 fluxes in the roots and root activity among middle eutropher or hyper eutropher. The results showed:(1)O. javanica preference to absorption of NH+4.(2)Compared with the contrast, simulated acid rain reduced H+ effluxes, receded NH+4 influxes, increased NO-3 effluxes, and no significant effect on the root activity.(3)The effect of simulated acid rain on ion fluxes in the roots was enhanced and the root activity was significant deceased among hyper eutropher. To conclude that acid rain affected the absorption of Nitrogen ions fluxes and advanced eutrophication level would strengthen the influence of acid rain.

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Last Update: 2012-04-10