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管博,于君宝,陆兆华,谢文军,陈小兵,王雪宏.黄河三角洲重度退化滨海湿地盐地碱蓬的生态修复效果.生态学报,2011,31(17):4835~4840 本文二维码信息
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黄河三角洲重度退化滨海湿地盐地碱蓬的生态修复效果
The ecological effects of Suaeda salsa on repairing heavily degraded coastal saline-alkaline wetlands in the Yellow River Delta
投稿时间:2010-07-01  修订日期:2010-08-30
DOI:
关键词黄河三角洲  退化湿地  盐地碱蓬  生态修复
Key WordsYellow River Delta  degraded wetland  Suaeda salsa plant  eco-remediation
基金项目中国科学院知识创新工程重要方向项目(KZCX2-YW-223);国家自然科学基金项目(30770412, 40873062);中国科学院百人计划项目;山东省科技攻关计划项目(2008GG20005006, 2008GG3NS07005)
作者单位E-mail
管博 中国科学院烟台海岸带研究所滨海湿地生态实验室,海岸带环境过程重点实验室, 烟台 264000
中国科学院研究生院,北京 100049 
 
于君宝 中国科学院烟台海岸带研究所滨海湿地生态实验室,海岸带环境过程重点实验室, 烟台 264000
滨州学院 山东省黄河三角洲生态环境重点实验室, 滨州 256603 
Junbao.yu@gmail.com 
陆兆华 中国科学院烟台海岸带研究所滨海湿地生态实验室,海岸带环境过程重点实验室, 烟台 264000
滨州学院 山东省黄河三角洲生态环境重点实验室, 滨州 256603 
lu-zhh@263.net 
谢文军 滨州学院 山东省黄河三角洲生态环境重点实验室, 滨州 256603  
陈小兵 中国科学院烟台海岸带研究所滨海湿地生态实验室,海岸带环境过程重点实验室, 烟台 264000  
王雪宏 中国科学院烟台海岸带研究所滨海湿地生态实验室,海岸带环境过程重点实验室, 烟台 264000
中国科学院研究生院,北京 100049 
 
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摘要:
采用翻地、施肥和芦苇碎屑培肥等土壤改良方法,利用盐地碱蓬在黄河三角洲重度退化区进行生态修复实验研究。结果表明:重度退化湿地土壤改良后,盐地碱蓬能够成功生长,3种改良方法均可有效的降低重度退化盐碱地的土壤含盐量,改良后的土壤Na离子含量均显著低于对照组,土壤脲酶和磷酸酶活性与对照相比有了显著的提高,表明改良后土壤肥力得到了改善。3种改良方法比较,培肥处理组土壤Na离子含量显著低于其他两种方法;盐地碱蓬生物量达到最高值,说明增加有机物的培肥方法可有效的改良重度退化盐碱湿地土壤,达到较为理想的生态修复预期效果。
Abstract:
The Yellow River Delta is one of the most active regions of land-ocean interaction among the large river deltas in the world. However, the wetlands in Yellow River Delta have been suffering from soil salinity and increasing degradation, because of the coastal erosion and drying up of the Yellow River. Therefore, it's essential to develop efficient eco-remediation methods on heavily degraded coastal saline-alkaline wetlands to protect wetlands resources. To study the ecological effects of Suaeda salsa on repairing heavily degraded coastal saline-alkaline wetlands, ploughing (PG), fertilization (FG) and reed debris (RD) were used for soil eco-remediation. The saline-alkaline soil eco-remediation effects were investigated by periodic measurements of such variables as soil salt content, Na+, soil urease, phosphatase, soil nutrient components and biomass, density and yield of Suaeda salsa plant. The dynamic changes of different index and the differences of three eco-remediation methods were discussed. The results showed that the Suaeda salsa plant could grow well after the soil eco-remediation on heavily degraded coastal saline-alkaline wetlands. All three eco-remediation methods could decrease the soil salt content efficiently. The Na+ content in the eco-remediated soil was significantly lower than in control soil. Among three methods, the Na+ content in RD was significantly lower than in other two groups. The activity of soil urease and phosphatase in eco-remediation groups were higher than control, which indicated that the soil fertility was significantly improved. Compared with three methods, the activity of soil urease and phosphatase in RD was the highest. The contents of total N in PG, FG and RD were increased 30.9%, 31.7% and 28.6% respectively, and the content of total organic C, available P and K did not rise significantly. Plant biomass is one of the most important indicator evaluating the plant growth condition. Compared with three methods, the density of Suaeda salsa plant was FG < PG < RD, and the biomass of Suaeda salsa plant was PG < FG < RD. The results together indicated that organic matter adding is an effective way for soil eco-remediation in heavily degraded coastal saline-alkaline wetlands.
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