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作 者 ：马欣,夏孟婧*,陆兆华,裴定宇,刘志梅,苗颖

期 刊 ：生态学报 2010年 30卷 11期 页码：3001~3009

关键词：造纸废水；灌溉；重度退化滨海盐碱湿地；土壤化学性质；

Keywords:paper mill effluent, irrigation, heavily degraded coastal saline-alkaline wetland, soil chemical properties,

摘 要 ：造纸废水含有大量有机营养物质，可以用来恢复退化湿地。研究了处理后的造纸废水灌溉重度退化滨海盐碱湿地对土壤pH值、水溶性总盐、Na+、Cl-以及营养成分的影响。结果表明：灌溉后土壤pH值略有升高，没有加重土壤碱化；土壤水溶性总盐、Na+、Cl-分别比对照降低9.61%-37.05%、3.16%-21.66%、5.38%-28.44%，且上层土壤降低率高于中下层土壤；土壤有机质、碱解氮、速效磷含量显著提高，增加率分别比对照高13.68%-31.45%、30.01%-101.2%、1.08%-18.28%；速效钾含量没有显著提高。和正常芦苇湿地比较可知：灌溉后重度退化滨海盐碱湿地土壤化学性质得到改善，达到芦苇生长条件，可以进行芦苇湿地的恢复与重建。

Abstract:The paper mill effluent might be used for degraded wetlands restoration due to its abundant organic substances. Chemical properties including soil pH, total soluble salts, Na+, Cl- and soil nutrients of a heavily degraded coastal saline-alkaline wetland were studied after irrigation with treated paper mill effluent. The result showed that the soil pH increased a little without leading to aggravation of the soil alkalization. Compared to the control, the total soluble salts, Na+ and Cl- decreased by 9.61%-37.05%, 3.16%-21.66% and 5.38%-28.44% respectively, and the reduction rates of upper soil layers were higher than those of the middle and lower layers. Irrigation of paper mill effluent significantly improved the soil organic matter, alkali-hydrolyzable N and available P with the increasing rates higher than the control by 13.68%-3145%, 30.01%-101.07% and 1.08%-18.28% respectively. While available K did not rise significantly. A comparison with natural reed wetlands showed that irrigation with treated paper mill effluent could improve the soil property of the heavily degraded coastal wetland to the level suitable for reeds restoration and reed wetlands reconstruction.

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