GAO Zhaohui, WEI Huaijian, LI Yucheng, et al. Relationships Between Humus and Cadmium Speciation of Reclaimed Soil Under Various Vegetation[J]. Bulletin of Soiland Water Conservation, 2017, 37(5): 103-109.
DOI:
GAO Zhaohui, WEI Huaijian, LI Yucheng, et al. Relationships Between Humus and Cadmium Speciation of Reclaimed Soil Under Various Vegetation[J]. Bulletin of Soiland Water Conservation, 2017, 37(5): 103-109. DOI: 10.13961/j.cnki.stbctb.2017.05.018.
Relationships Between Humus and Cadmium Speciation of Reclaimed Soil Under Various Vegetation
[Objective] Clarifying the relationship between soil humus and Cd in different vegetation was supposed to provide a support for controlling cadmium activity in reclaimed soil.[Methods] The 7-year soil at coal gangue reclamation area in Datong District
Huainan City
was taken as research samples. The contents of humus and cadmium chemical speciation in this region were measured under three typical plant restoration patterns (A Syzygium aromaticum+Robinia pseudoacacia
B Photinia serrulata+Vicia hirsuta
C Ailanthus altissima+V. hirsuta). The chemical morphology of Cd and humus components were determined by tessier five-step extraction method and modified humus analytical method
respectively
and the relationship was illustrated by multivariate statistical analysis.[Results] (1) The humification degree of the C plant allocation pattern was higher than those of A and B in the reclamation area of the mining area; (2) The content of exchangeable Cd in the C plant allocation pattern of the reclaimed land was lower than those in the other two plant allocation patterns; (3) The positive correlation coefficient between available Cd and fulvic acid (FA) was significant in the reclamation area.[Conclusion] Not only can the appropriate plant restoration pattern C adjust the properties and forms of humus in reclaimed soils
but also can affect the potential bioavailability of cadmium.
Irizar A, Rodríguez M P, Izquierdo A, et al. Effects of soil organic matter content on cadmium toxicity in Eisenia Fetida:Implications for the use of biomarkers and standard toxicity tests[J]. Archives of Environmental Contamination and Toxicology, 2015,68(1):181-192.
Lair G J, Gerzabek M H, Haberhauer G. Sorption of heavy metals on organic and inorganic soil constituents[J]. Environmental Chemistry Letters, 2007,5(1):23-27.
Hee P J, Dane L, Periyasamy P, et al. Role of organic amendments on enhanced bioremediation of heavy metal(loid)contaminated soils[J]. Journal of Hazardous Materials, 2011,185(2/3):549-574.
Wang Xia, Ding Wenguang, Nan Zhongren, et al. Fraction of Cd in oasis soil and its bioavailability to commonly grown crops in Northwest China[J]. Environmental Earth Sciences, 2013,70(1):471-479.
Liu Chengchung, Chen Guanbu. Reclamation of cadmium-contaminated soil using dissolved organic matter solution Originating from wine-processing waste sludge[J]. Journal of Hazardous Materials, 2013,244-245:645-653.
Tessier A. Sequential extraction procedure for the speciation of particulate trace metals[J]. Analytical Chemistry, 1979,51(7):844-851.
Kumada K. Humus composition of mountain soils in Central Japan with special reference to the distribution of P type humic acid[J]. Soil Science and Plant Nutrition, 1967,13(5):151-158.
Pérez-Cid B, Lavilla I, Bendicho C. Application of microwave extraction for partitioning of heavy metals in sewage sludge[J]. Analytica Chimica Acta, 1999,378(1/2/3):201-210.
Liu Yizhang. High cadmium concentration in soil in the Three Gorges region:Geogenic source and potential bioavailability[J]. Applied Geochemistry, 2013,37(10):149-156.
Chaturvedi P K, Seth C S, Misra V. Selectivity sequences and sorption capacities of phosphatic clay and humus rich soil towards the heavy metals present in zinc mine tailing[J]. Journal of Hazardous Materials, 2007,147(3):698-705.
Garcia-Mina J M. Stability, solubility and maximum metal binding capacity in metal-humic complexes involving humic substances extracted from peat and organic compost[J]. Organic Geochemistry, 2006,37(12):1960-1972.