___

• Ahmad I, Hayat S, Ahmad A, Inam A, Samiullah I (2005). Effect of heavy metal on survival of certain groups of indigenous soil microbial population. Journal of Applied Sciences and Environmental Management, 9: 115-121.
• Alcântara M K, Neto V A, Camargo O A, Cantarella H (2007). Nitrogen mineralization in soils treated with tannery sludge. Pesquisa Agropecuária Brasileira, 40: 547-555
• Allaway W H (1968). Agronomic control over the environmental cycling of trace elements. Advances in Agronomy, 20: 235-274.
• Allison L E, Moodie C D (1965). Carbonate. In: C.A. Black et al (ed.) Methods of Soil Analysis, Part 2. Agronomy., Am. Soc. Of Agron., Inc., Madison, Wisconsin, U.S.A. 9: 1379-1400.
• Apte A D, Tare V, Bose P (2006). Extent of oxidation of Cr(III) to Cr(VI) under various conditions pertaining to natural environment. Journal of Hazardous Materials, 164-174.
• Bààth E, Arnebrant K (1994). Growth-rate and response of bacterial communities to pH in limed and ash treated forest soils. Soil Biology and Biochemistry, 26: 995-1001.
• Bouyoucos G S (1951). A recalibration of the hydrometer for mohing mechanical analysis of soil. Agronomy Journal, 43: 434-438.
• Chaudhary A M, MacGrath S P, Knight B P, Johnson D L, Jones K C (1996). Toxicity of organic compounds to the indigenous population of R. leguminosorum bv. trifolii in soil. Soil Biology and Biochemistry, 28: 1483-1487.
• Demiralay İ (1993). Toprak Fiziksel Analizleri. Atatürk Üniversitesi Ziraat Fakültesi Yayınları No: 143, sf: 78-89, Erzurum.
• Dotaniya M L, Rajendiran S, Meena V D, Saha J K, Vassanda Coumar M, Kundu S, Patra A K (2017). Influence of chromium contamination on carbon mineralization and enzymatic activities in vertisol. Agricultural Research, 6: 91-96. Duchaufour P (1970). Precis de Pedologie. Masson et C1e, Editeurs, p: 435-437, Paris.
• Friedlova M (2010). The influence of heavy metals on soil biological and chemical properties. Soil and Water Research, 5(1):21-27
• Gökçeoğlu M (1979). Bazı bitki organlarındaki azot, fosfor ve potasyumun bir vejetasyon periyodundaki değişimi. Doğa Tarım ve Ormancılık, 3: 192-199.
• Jackson M L (1958). Soil Chemical Analysis. Pretice-Hall, Inc. Englewood Cliffs, p: 1-498, New Jersey, U.S.A.
• Kebir T, Bouhadjera K (2011). Effects of heavy metals pollution in soil and plant in the industrial area, West Algeria. Journal of the Korean Chemical Society, 55 (6): 1018-1023.
• Lemee G (1967). Investigations sur la mineralisation de l’azote et son evolution annuelle dans des humus forestiers in situ. Ecologie Plant, 2: 285-324.
• Lenart A, Wolny-Koładka K (2013). The effect of heavy metal concentration and soil pH on the abundance of selected microbial groups within arcelorMittal poland steelworks in Cracow. Bulletin of Environmental Contamination and Toxicology, 90(1): 85-90.
• Martyn W, Skwaryło-Bednarz B (2005). Biological properties of light soils in the area of Roztocze National Park. Acta Agrophysica, 5: 695-704.
• Nwuche C O, Ugoji E O (2008). Effects of heavy metal pollution on the soil microbial activity. International Journal of Environmental Science and Technology, 5: 409-414.
• Obbard J P (2001). Ecotoxicological assessment of heavy metals in sewage sludge amended soils. Applied Geochemistry, 16: 1405-1411.
• Reisenauer H M (1982). Chromium, in A. L. Page et al. (eds), Methods of Soil Analysis, Part 2, Chemical and Microbiological Properties, 2nd ed., Agron. Monogr. Vol. 9, ASA and SSSA, Madison, WI, U.S.A., 337–346.
• Sani R K, Peyton B M, Jadhyala M (2003). Toxicity of lead in aqueous medium to Desulfovibrio desulfuricans G20. Environmental Toxicology, 22 (2): 252-260.
• Tecimen H B, Sevgi O (2008). Orman topraklarında mikroorganizmalar tarafından gerçekleştirilen azot dönüşümleri. SDÜ Orman Fakültesi Dergisi, cilt.A: 179-189.
• Utgikar V P, Chaudhary N, Koeniger A, Tabak H H, Haines J R, Govind R (2004). Toxicity of metals and metal mixtures: Analysis of concentration and time dependence for zinc and copper. Water Research, 38 (17): 3651- 3658.
• Ünver M C (2007). Murat dağı (Uşak, Kütahya) alpin ve subalpin bölgesinin bazı bitki topluluklarında azot dönüşümleri üzerinde araştırmalar. Uludağ Üniversitesi, Doktora Tezi, 116 s.
• Walpola B C, Arunakumara K K I U, Yoon M H (2011). Evaluation of nitrogen mineralization in soil polluted by zinc and cadmium. Korean Journal of Soil Science and Fertilizer, 44(4): 559-564. Wang J, Lu Y, Shen G (2007). Combined effects of cadmium and butachlor on soil enzyme activities and microbial community structure. Environmental Geology, 51: 1221-1228.