References
Acosta-Martínez V., Cruz L., Sotomayor-Ramírez D., and Pérez-Alegría L. 2007. Enzyme activities as affected by soil properties and land use in a tropical watershed. Applied Soil Ecology, 35(1): .35-45.
Antisari L.V., Carbone S., Gatti A., Vianello G., and Nannipieri P. 2013. Toxicity of metal oxide (CeO2, Fe3O4, SnO2) engineered nanoparticles on soil microbial biomass and their distribution in soil. Soil Biology and Biochemistry, 60: 87-94.
Baoshan Y., Fei H., Qinglin C., and Hui W. 2015. Toxicological effects of Cd pollution on soil urease activity. In 2015 AASRI International Conference on Circuits and Systems (CAS 2015). Atlantis Press, pp. 96-98.
Buzea C., Pacheco Blandino I.I., and Robbie K. 2007. Nanomaterials and nanoparticles: Sources and toxicity. Biointerphases, 2: MR17-MR71.
Chaney W.R., Kelly J.M., and Strickland R.C. 1978. Influence of cadmium and zinc on carbon dioxide evolution from litter and soil from a black oak forest 1. Journal of Environmental Quality, 7(1): 115-119.
Chen Y.P., Liu Q., Liu Y.J., Jia F.A., and He X.H. 2014. Responses of soil microbial activity to cadmium pollution and elevated CO2. Scientific reports, 4, p.4287.
Chen J.H., Wang Y.J., Zhou D.M., Cui Y.X., Wang S.Q., and Chen Y.C. 2010. Adsorption and desorption of Cu (II), Zn (II), Pb (II), and Cd (II) on the soils amended with nanoscale hydroxyapatite. Environmental progress & sustainable energy, 29(2): 233-241.
Cui H., Zhou J., Zhao Q., Shi Y., Mao J., Fang G., and Liang J. 2013. Fractions of Cu, Cd, and enzyme activities in a contaminated soil as affected by applications of micro-and nanohydroxyapatite. Journal of Soils and Sediments, 13(4): 742-752.
Diaz-Ravina M., and Baath E. 1996. Development of metal tolerance in soil bacterial communities exposed to experimentally increased metal levels. Applied and Environmental Microbiology, 62(8): 2970-2977. Eivazi F. and Tabatabai M.A. 1977. Phosphatases in soils. Soil Biology and Biochemistry, 9(3): 167-172.
Ding L., Li J., Liu W., Zuo Q., and Liang S.X. 2017. Influence of Nano-Hydroxyapatite on the metal bioavailability, plant metal accumulation and root exudates of ryegrass for phytoremediation in lead-polluted soil. International Journal of Environmental Research and Public Health, 14(5): 532-540.
Doelman P., and Haanstra L. 1986. Short-and long-term effects of heavy metals on urease activity in soils. Biology and Fertility of Soils, 2(4): 213-218.
El Hadri H., Louie S.M., and Hackley V.A. 2017. Assessing the interactions of metal nanoparticles in soil and sediment matrices–a quantitative analytical multi-technique approach. Environmental Science: Nano, 5(1): 203-214.ا
Fan D., Han J., Chen Y., Zhu Y., and Li P. 2018. Hormetic effects of Cd on alkaline phosphatase in soils across particle–size fractions in a typical coastal wetland. Science of the Total Environment, 613:792-797.
Frenk S., Ben-Moshe T., Dror I., Berkowitz B., and Minz D. 2013. Effect of metal oxide nanoparticles on microbial community structure and function in two different soil types. Plos One, 8(12): e84441.
Ge Y., Schimel J. P., and Patricia A. Holden P. A. 2013. Evidence for negative effects of TiO2 and ZnO nanoparticles on soil bacterial communities. Environmental Science Technology, 45: 1659–1664.
Gee G.W., and Bauder J.W. 1982. Hydrometer Method. P 383-314, In: Klute, A. (ed), Methods of Soil Analysis: Physical Properties, Part 1, second Ed. Agron Monogr, No 9, Madison WI: ASA and SSSA.
Hassan W., Akmal M., Muhammad I., Younas M., Zahaid K.R., and Ali F. 2013. Response of soil microbial biomass and enzymes activity to cadmium (Cd), 7 (5): 674-680.
He M., Shi H., Zhao X., Yu Y., and Qu B. 2013. Immobilization of Pb and Cd in contaminated soil using nanocrystallite Hydroxyapatite. Procedia Environmental Sciences, 18: 657–665.
He Z., Shentu J., Yang X., Baligar V.C., Zhang T., and Stoffella P.J. 2015. Heavy metal contamination of soils: sources, indicators and assessment, 9:17-18.
Jiang J., Oberdorster G., and Biswa P. 2008. Characterization of size, surface charge, and agglomeration state of nanoparticle dispersions for toxicological studies. Journal Nanoparticle Research, 11:77–89.
Jiang S.D., Yao Q.Z., Zhou G.T., and Fu S.Q. 2012. Fabrication of hydroxyapatite hierarchical hollow microspheres and potential application in water treatment. The Journal of Physical Chemistry C, 116(7): 4484-4492.
Kandziora-Ciupa M., Ciepał R., and Nadgorska-Socha A. 2016. Assessment of heavy metals contamination and enzymatic activity in pine forest soils under different levels of anthropogenic stress. Polish Journal of Environmental Studies, 25(3):1-7.
Karaca A., Cetin S.C., Turgay O.C., and Kizilkaya R. 2010. Effects of heavy metals on soil enzyme activities. In Soil heavy metals, Springer, Berlin, Heidelberg, 237-262.
Khan S., Hesham A.E.L., Qiao M., Rehman S., and He J.Z. 2010. Effects of Cd and Pb on soil microbial community structure and activities. Environmental Science and Pollution Research, 17(2): 288-296.
Kizilkaya R., Aşkın T., Bayrakli B., and Saglam M. 2004. Microbiological characteristics of soils contaminated with heavy metals. European Journal of Soil Biology, 40(2): 95-102.
Kumpiene J., Ore S., Renella G., Mench M., Lagerkvist A., and Maurice C. 2006. Assessment of zerovalent iron for stabilization of chromium, copper and arsenic in soil. Environmental Pollution, 144: 62-69.
Landi L., Renella G., Moreno J.L., Falchini L., and Nannipieri P. 2000. Influence of cadmium on the metabolic quotient, L-: D-glutamic acid respiration ratio and enzyme activity: microbial biomass ratio under laboratory conditions. Biology and Fertility of Soils, 32(1): 8-16.
Leinweber P., Jandl G., Baum C., Eckhardt K.U., and Kandeler E. 2008. Stability and composition of soil organic matter control respiration and soil enzyme activities. Soil Biology and Biochemistry, 40(6): 1496-1505.
Lindsay W.L., and Norvell W.A. 1978. Development of a DTPA soil test for zinc, iron, manganese and copper. Soil Science Society of America Journal, 42(3): 421-428.
Liu W., Zuo Q., Zhao C., Wang S., Shi Y., Liang S., Zhao C., and Shen S. 2018. Effects of Bacillus subtilis and nanohydroxyapatite on the metal accumulation and microbial diversity of rapeseed (Brassica campestris L.) for the remediation of cadmium-contaminated soil. Environmental Science and Pollution Research, 25(25): 25217-25226.
Loeppert R. H., and Suarez L. 1996. Carbonate and gypsum. In ‘Methods of soil 10 analysis. Part 3. Chemical methods. (Ed. DL Sparks) Pp: 437–474. Soil Science Society of America journal: Madison, WI.
Ma H., Williams P. L., and Diamond S. A. 2013. Ecotoxicity of manufactured ZnO nanoparticlese - A review. Environmental Pollution, 172: 76-85.
Marzadori C., Miletti S., Gessa C., and Ciurli S. 1998. Immobilization of Jack Bean Urease on hydroxyapatite: Urease immobilization in alkaline soils. Soil Biology and Biochemistry, 30: 1485-1490.
Masto R.E., Ahirwar R., George J., Ram L.C., and Selvi V.A. 2011. Soil biological and biochemical response to Cd exposure. Open Journal Soil Science, 1: 8-15.
Mueller N.C., and Nowack B. 2010. Nanoparticles for remediation: solving big problems with little particles. Elements, 6(6): 395-400.
Nannipieri P. 1994. The potential use of soil enzymes as indicators of productivity, sustainability and pollution. In: Pankhurst, C.E., Doube. B.M., Gupta, V.V.S.R., Grace. P.R. (Eds). Soil Biota: Management in Sustainable Farming Systems. CSIRO Publications, Melbourne, Australia: 238-244.
Patil A.J., Muthusamy E., and Mann S. 2004. Synthesis and self‐assembly of organoclay‐wrapped biomolecules. Angewandte Chemie International Edition, 43(37): 4928-4933.
Remediuos C., Rosario F., and Bastos V. 2012. Environmental Nanoparticles Interactions with Plants: Morphological, Physiological, and Genotoxic Aspects. Journal of Botany.1-8.
Rhoades J.D. 1982. Soluble salts. Pp: 167-179, In: Page, A.L. (ed), Methods of Soil Analysis: Chemical and microbiological properties, Part 2. 2nd Ed. Agron. Monogr. No.9, ASA and SSSA, Madison WI.
Sardar K.H., Qing C.A.O., Hesham A.E.L., Yue X., and He J.Z. 2007. Soil enzymatic activities and microbial community structure with different application rates of Cd and Pb. Journal of Environmental Sciences, 19(7): 834-840.
Sethi S., and Gupta S. 2015. Responses of soil enzymes to different heavy metals. Biolife, 3:147-153.
Shi W., and Ma X. 2017. Effects of heavy metal Cd pollution on microbial activities in soil. Annals of Agricultural and Environmental Medicine, 24(4): 722-72
Sposito G., Lund L.J., and Chang A.C. 1982. Trace metal chemistry in arid zone field soils amended with sewage sludge: I. Fractionation of Ni, Cu, Zn, Cd, and Pb in soil phases.
Soil Science Society of America Journal, 46(2): 260–264.
Tabatabai M. A., and Bremner J. M. 1972. Assay of urease activity in soils. Soil Biology and Biochemistry, 4(4): 479-487.
Tabatabai M.A., and Bremner J.M. 1969. Use of p-nitrophenyl phosphate for assay of soil phosphatase activity. Soil Biology and Biochemistry, 1(4): 301-307.
Thalmann A. 1966. The determination of the dehydrogenase activity in soil by means of TTC (triphenyltetrazolium). Soil Biology, 6: 46-49.
Usman A., Kuzyakov Y., and Stahr K. 2005. Effect of clay minerals on immobilization of heavy metals and microbial activity in a sewage sludge-contaminated soil. Journal of Soil Sediment, 5(4): 245–252.
Vance E.D., Brookes P.C., and Jenkinson D.S. 1987. An extraction method for measuring soil microbial biomass C. Soil Biology and Biochemistry, 19(6): 703-707.
Vig K., Megharaj M., Sethunathan N., and Naidu R. 2003. Bioavailability and toxicity of cadmium to microorganisms and their activities in soil (a review). Advances in Environ. Research, 8(1): 121-135.
Walkley A., and Black I.A. 1934. An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Science, 37(1): 29-38.
Wei L., Wang S., Zuo Q., Liang S., Shen S., and Zhao C. 2016. Nano-hydroxyapatite alleviates the detrimental effects of heavy metals on plant growth and soil microbes in e-waste-contaminated soil. Environmental Science: Processes & Impacts, 18(6): 760-767.
WHO. 1996. Trace Element in Human Nutrition and Health, WHO, Genova, 361p.
Wieczorek J., Baran A., Urbański K., Mazurek R., and Klimowicz-Pawlas A. 2018. Assessment of the pollution and ecological risk of lead and cadmium in soils. Environmental Geochemistry and Health, 40(6): 2325-2342.
Wu C., Yan S., Zhang H., and Luo Y. 2015. Chemical forms of cadmium in a calcareous soil with different levels of phosphorus-containing acidifying agents. Soil Research, 53(1): 105–111.
Xie W., Zhou J., Wang H., Chen X., Lu Z., Yu J., and Chen X. 2009. Short-term effects of copper, cadmium and cypermethrin on dehydrogenase activity and microbial functional diversity in soils after long term mineral or organic fertilization. Agriculture, Ecosystems and Environment, 129(4): 450-456.
Yang Y., Dong M., Cao Y., Wang J., Tang M., and Ban Y. 2017. Comparisons of soil properties, enzyme activities and microbial communities in heavy metal contaminated bulk and rhizosphere soils of Robinia pseudoacacia L. in the northern foot of Qinling mountain. Forests, 8(11), p.430.
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