Effects of intercropping Sedum plumbizincicola and Apium graceolens on the soil chemical and microbiological properties under the contamination of zinc and cadmium from sewage sludge application

NAI Feng-jiao; WU Long-hua; LIU Hong-yan; REN Jing; LIU Wu-xing; LUO Yong-ming
May 2013
Yingyong Shengtai Xuebao;May2013, Vol. 24 Issue 5, p1428
Academic Journal
Taking the vegetable soil with zinc- and cadmium contamination from a long-term sewage sludge application as the object, a pot experiment was conducted to study the remediation effect of Sedum plumbizincicola and Apium graceolens under continuous monoculture and intercropping. With the remediation time increased, both S. plumbizincicola and A. graceolens under monoculture grew poorly, but S. plumbizincicola under intercropping grew well. Under intercropping, the soil organic matter, total N, extractable N, and total P contents decreased significantly while the soil extractable K content had a significant increase, the counts of soil bacteria and fungi increased by 7. 9 and 18. 4 times and 3. 7 and 4. 3 times, respectively, but the soil urease and catalase activities remained unchanged, as compared with those under A. graceolens and S. plumbizincicola monoculture. The BIOLOG ECO microplates also showed that the carbon sources utilization level and the functional diversity index of soil microbial communities were higher under intercropping than under monoculture, and the concentrations of soil zinc and cadmium under intercropping decreased by 5.8% and 50. 0% , respectively, with the decrements being significantly higher than those under monoculture. It was suggested that soil microbial effect could be one of the important factors affecting plant growth.


Related Articles

  • Immobilization of Cd, Zn and Pb in sewage sludge using red mud. Liang, Zhen; Peng, Xianjia; Luan, Zhaokun // Environmental Earth Sciences;Jul2012, Vol. 66 Issue 5, p1321 

    Sewage sludge is an inevitable end by-product of sewage treatment. Land application provides a cost-effective alternative for sewage sludge disposal. However, sewage sludge contains heavy metals that may limit its application. In this work, red mud was employed for the immobilization of heavy...

  • Marine Organisms in Toxicological Approach for the Assessment of Environmental Risk Associated With Cd, Cu, Pb and Zn. Rajkumar, J. S. I. // Universal Journal of Environmental Research & Technology;Apr2012, Vol. 2 Issue 2, p19 

    Three marine organisms, Mugil cephalus, Penaeus monodon and Perna viridis were exposed to cadmium, copper, lead and zinc in 24-hrs static renewal acute toxicity test in the present study. Subsequently safe concentration and the ambient concentrations in the Ennore were estimated. The calculated...

  • HONEY BEES AND THEIR PRODUCTS AS A BIO-INDICATOR OF ENVIRONMENTAL POLLUTION WITH HEAVY METALS. Al Naggar, Yahya A.; Naiem, El-Saied A.; Seif, Amal I.; Mona, Mohamed H. // Mellifera;2013, Vol. 13 Issue 26, p10 

    The aim of this study is to evaluate the effectiveness of honeybees and their associated products as biological indicators of the presence of lead, cadmium, copper, iron and zinc in the environment. Samples were collected from four different Egyptian regions with different anthropogenic...

  • Potential of activated sludge ozonation. Boehler, M.; Siegrist, H. // Water Science & Technology;2007, Vol. 55 Issue 12, p181 

    The disposal of sewage sludge and the agricultural use of stabilised sludge are decreasing due to more stringent regulations in Europe. An increasing fraction of sewage sludge must therefore be dewatered, dried, incinerated and the ashes disposed of in landfills. These processes are...

  • Analysis of Curing Agent on the Strength of Lightweight Soil Using Recycled Sludge. Guocai Wang; Linchun Yu; Ling Sha // Advanced Materials Research;2014, Vol. 936, p1382 

    In order to study the inorganic composite curing agents of lime, gypsum, fly ash on the strength properties of EPS lightweight soil using recycled sludge, the unconfined compressive strength test and scanning electron microscope test are done to investigate the strength properties of EPS...

  • Embankment on sludge: predicted and observed performances. Wu, Tien H.; Zhou, Steven Z.; Gale, Stephan M. // Canadian Geotechnical Journal;May2007, Vol. 44 Issue 5, p545 

    The case history of an embankment built over soft water-treatment sludge is presented. To assure that the sludge would consolidate and gain strength as predicted, a test embankment was built. The observed performance of the test embankment was compared with the predicted performance to verify...

  • Lhcb2 gene expression analysis in two ecotypes of Sedum alfredii subjected to Zn/Cd treatments with functional analysis of SaLhcb2 isolated from a Zn/Cd hyperaccumulator. Min Zhang; Senoura, Takeshi; Xiaoe Yang; Yueen Chao; Nishizawa, Naoko K. // Biotechnology Letters;Sep2011, Vol. 33 Issue 9, p1865 

    The Lhcb2 gene from hyperaccumulator Sedum alfredii was up-regulated more than three-fold while the non-hyperaccumulator accumulated one or two-fold higher amount of the mRNA than control plants under different concentrations of Cd for 24 h. Lhcb2 expression was up-regulated more than five-fold...

  • Framework for analysis Walker, John M. // BioCycle;Apr1989, Vol. 30 Issue 4, p71 

    No abstract available.

  • Experts assemble to evaluate sludge proposal Goldstein, Nora // BioCycle;May1989, Vol. 30 Issue 5, p80 

    No abstract available.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics