1.Abawi, G.S., and Widmer, T.L. 2000. Impact of soil health management practices on soil borne pathogens, nematodes and root diseases of vegetable crops. Applied Soil Ecology. 15: 1. 37-47.
2.Alamdari, P., Rezaee, B., and Golchin, A. 2016. Effect of land use change on soil quality and clay mineralogy in Valarude region of Zanjan province. J. Water Soil Sci. 26: 1-1. 305-316. (In Persian)
3.Alef, K. 1995. Soil respiration. P 214-215, In: K. Alef and P. Nannipieri (eds.), Methods in Soil Microbiology and Biochemistry, Academic Press Inc., San Diego.
4.Alidoust, A., Afyuni, M., Hajabbasi, M.A., and Mosaddeghi, M.R. 2015. The impact of land use on some qualitative characteristics of soil, Case study: Lordegan watershed. 14th Soil Science Congress of Iran, Rafsanjan, Pp: 274-278. (In Persian)
5.Anderson, T.H., and Domsch, K.H. 1993. The metabolic quotient (qCO2) as a specific activity parameter to assess the effects of environmental conditions, such as pH, on the microbial biomass of forest soils. Soil Biology and Biochemistry.
6.Anderson, T.H. 2003. Microbial eco-physiological indicators to assess soil quality. Agriculture, Ecosystems and Environment. 98: 285-293.
7.Armenise, E., Redmile-Gordon, M.A., Stellacci, A.M., Ciccarese, A., and Rubino, P. 2013. Developing a soil quality index to compare soil fitness for agricultural use under different managements in the Mediterranean environment. Soil and Tillage Research.130: 91-98.
8.Askari, M.S., and Holden, N.M. 2015. Quantitative soil quality indexing of temperate arable management systems. Soil and Tillage Research. 150: 57-67.
9.Babakkhani, A.R., and Sadeghi, A. 2004. Geological map of Zanjan: 1:100000, Geological Survey of Iran. 1p. (In Persian)
10.Banaei, M.H. 2000. Soil resources and use potentiality map of Iran. Soil and Water Research Institute. Tehran. 6p. (In
11.Basher, L., Betts, H., Lynn, I., Marden, M., McNeill, S., Page, M., and Rosser, B. 2017. A preliminary assessment of the impact of landslide, earthflow and gully erosion on soil carbon stocks in New Zealand. Geomorphology. 307: 93-106.
12.Bastida, F., Zsolnay, A., Hernández, T., and García, C. 2008. Past, present and future of soil quality indices:A biological perspective. Geoderma. 147: 3-4. 159-171.
13.Beheshti, A., Raiesi, F., and Golchin, A. 2011. The effects of land use conversion from pasturelands to croplands on soil microbiological and biochemical indicators. J. Water Soil. 25: 3. 548-562. (In Persian)
14.Bini, D., Alcantara, C., Banhos, K., Kishino, N., Andrade, G., Zangaro, W., and Nogueira, M. 2013. Effects of land use on soil organic carbon and microbial processes associated with soil health in southern Brazil. Europ. J. Soil Biol. 55: 117-123.
15.Black, C.A., Evans, D.D., White,J.L., Ensminger, L.E., and Clark,F.E. 1965. Methods of Soil Analysis. Part 2. "Chemical and Microbiological Properties". American Society of Agronomy, Soil Science Society of America, Madison, Wisconsin, USA, Agronomy Series No. 9, 801p.
16.Bremer, E., Janzen, H.H., Ellert, B.H., and McKenzie, R.H. 2008. Soil organic carbon after twelve years of various crop rotations in an Aridic Boroll. Soil Sci. Soc. Amer. J. 72: 970-974.
17.Carter, M.R., and Gregorich, E.G. 2008. Soil sampling and methods of analysis. Canadian Society of Soil Science, CRC Press, Taylor and Francis Group, Boca Raton, Florida. 1204p.
18.Doran, J.W., and Parkin, T.B. 1994. Quantitative indicators of soil quality: a minimum data set. P 25-37, In: J.W. Doran and A.J. Jones (eds.), Methods for assessing soil quality. Special Publication 49. Soil Science Society of America, Madison.
19.Franzluebbers, A.J., Causarano, H.J., and Norfleet, M.L. 2011. Soil conditioning index and soil organic carbon in the Midwest and southeastern United States. J. Soil Water Cons.66: 3. 178-182.
20.Gebeyehu, G., and Soromessa, T. 2018. Status of soil organic carbon and nitrogen stocks in Koga Watershed Area, Northwest Ethiopia. Agriculture and Food Security
. 7: 9.
21.Gee, G.W., and Bauder, J.W. 1986. Particle-size analysis. P 383-411, In: A. Klute (eds.), Methods of soil analysis. Part 1. 2nd ed. Agron. Monogr. 9. Soil Science Society of America and American Society of Agronomy, Madison.
22.Gorji,M., Kakeh, J., and Alimohammadi, A. 2017. Quantitative soil quality assessment in different land uses at some Parts of south eastern of Qazvin. Iran. J. Soil Water Res.47: 4. 775-784. (In Persian)
23.Green, V.S., Stott, D.E., Cruz, J.C., and Curi, N. 2008. Tillage impacts on soil biological activity and aggregation in Brazilian cerrado oxisols. Soil and Tillage Research. 92: 114-121.
24.Grossman, R.B., and Reinsch, T.G. 2002. 2.1 Bulk Density and Linear Extensibility. P 201-228, In: A.W. Dick (eds.), Methods of soil analysis: Part 4 Physical methods. Soil Science Society of America Book Series, Madison.
25.Hussain, I., Olson, K.R., Wander, M.M., and Karlen, D.L. 1999. Adaptation of soil quality indices and application to three tillage systems in southern Illinois. Soil and Tillage Research. 50: 237-249.
26.Jamal, A., Delavar, M.A., Naderi, A., Nourieh, N., Medi, B., and Mahvi, A.H. 2018. Distribution and health risk assessment of heavy metals in soil surrounding a lead and zinc smelting plant in Zanjan, Iran. Human and Ecological Risk Assessment.
27.Jones, N., de Graaff, J., Duarte, F., Rodrigo, I., and Poortinga, A. 2014. Farming systems in two less favored areas in Portugal: their development from 1989 to 2009 and the implication for sustainable land management. Land Degradation and Development. 25: 29-44.
28.Kelishadi, H., Mossaddeghi, M.R., Hajabbasi, M.A., and Ayoubi, S. 2014. Near-saturated soil hydraulic properties as influenced by land use management systems in Koohrang region of central Zagros, Iran. Geoderma. 213: 426-434.
29.Kemper, W.D., and Rosenau, R.C. 1986. Aggregate stability and size distribution. P 425-442, In: A. Klute (eds.), Methods of soil analysis. Part I: Physical analysis. Soil Science Society of America, Madison.
30.Kimble, J.M., Heath, L.S., Birdsey, R.A., and Lal, R. 2003. The potential of U.S. forest soils to sequester carbon and mitigate the greenhouse effect. CRC Press LLC, New York, 394p.
31.Klute, A., and Dirkson, C. 1986. Hydraulic conductivity and diffusivity: Laboratory methods. P 687-734, In: A. Klute (eds.), Methods of soil analysis, Part 1. American Society of Agronomy, Madison.
32.Lal, R., Kimble, J., and Follett, R.F. 1997. Pedospheric processes and the carbon cycle. P 1-8, In: R., Lal, W.H. Blum, C. Valentine and B.A. Stewart (eds.), Methods for assessment of soil degradation. CRC Press, Boca Raton.
33.Lima, A.C.R., Brussaard, L., Totola, M.R., Hoogmoed, W.B., and de Goede, R.G.M. 2013. A functional evaluation of three indicator sets for assessing soil quality. Applied Soil Ecology. 64: 194-200.
34.McKenzie, N.J., Webster, R., and Ryan, P.J. 2008. Sampling using statistical methods. P 317-326, In: N.J., McKenzie, M.J. Grundy, R. Webster and A.J. Ringrose-Voase (eds.), Guidelines for surveying soil and land resources, second ed. CSIRO Publishing, Melbourne, Australia.
35.Masto, R.E., Chhonkar, P.K., Singh, D., and Patra, A.K. 2008. Alternative soil quality indices for evaluating the effect of intensive cropping, fertilisation and manur-ing for 31 years in the semi-arid soils of India. Environmental Monitoring and Assessment. 136: 419-435.
36.Mehlich, A. 1953. Determination of P, Ca, Mg, K, Na and NH4 by North Carolina Soil Testing Laboratories. University of North Carolina, Raleigh.
37.Misaghi, F., Delgosha, F., Razzaghmanesh, M., and Myers, B. 2017. Introducing a water quality index for assessing water for irrigation purposes: A case study of the GhezelOzanRiver. Science of the Total Environment. 589: 107-116.
38.Mohaghegh, P., Naderi, M., and Mohammadi, J. 2016. Determination of minimum data set for assessment of soil quality: A case study in Choghakhur lake basin. J. Water Soil. 30: 1232-1243. (In Persian)
39.Mohammadian, M., Nouri, J., Afshari, N., Nassiri, J., and Nourani, M. 2008. Investigation of heavy metals concentrations in the water wells close to Zanjan zinc and lead smelting plant. Iran. J. Health Environ. 1: 51-56. (In Persian)
40.Mueller, L., Schindler, U., and Dexter, A. 1994. Subsoil structure characteristics of river lowland clay soils with shallow water tables, 13. International Soil Tillage Research Organization, Aalborg (Denmark), 24-29 Jul 1994. KVL, ISTRO.
41.Mulugeta, D., and Karl, S. 2010. Assessment of integrated soil and water conservation measures on key soil properties in south Gondar, north-western Highlands of Ethiopia. J. Soil Sci. Environ. Manage. 1: 7. 164-176.
42.Nabiollahi, K., Golmohamadi, F., Taghizadeh-Mehrjardi, R., Kerry, R., and Davari, M. 2018. Assessing the effects of slope gradient and land use change on soil quality degradation through digital mapping of soil quality indices and soil loss rate. Geoderma. 318: 16-28.
43.Naderi, A., Delavar, M.A., Kaboudin, B., and Askari, M.S. 2017. Assessment of spatial distribution of soil heavy metals using ANN-GA, MSLR and satellite imagery. Environmental Monitoring and Assessment. Pp: 189-214.
44.Nath, A.J., and Lal, R. 2017. Effects of tillage practices and land use management on soil aggregates and soil organic carbon in the north Appalachian region, USA. Pedosphere. 27: 172-176.
45.Nelson, D.W., and Sommers, L.E. 1982. Total carbon, organic carbon, and organic matter. P 539-579, In: A.L. Page (eds.), Methods of soil analysis. Part 2. 2nd Ed. Agron. Monogr. 9. Soil Science Society of America and American Society of Agronomy, Madison.
47.PBO. 2016. Plan and Budget Organization, Statistical Center of Iran (SCI), Iran Statistical Yearbook, 102p. (In Persian)
48.Pierzynski, G.M. 2000. Methods of phosphorus analysis for soils, sediments, residuals and waters. North CarolinaStateUniversity, Raleigh, 102p.
49.Reynolds, W.D., Drury, C.F., Yang, X.M., and Tan, C.S. 2008. Optimal soil physical quality inferred through structural regression and parameter interactions. Geoderma. 146: 3-4. 466-474.
50.Rhoades, J.D. 1982. Cation exchange capacity. P 149-157, In: A.L. Page (eds.), Methods of soil analysis, Part 2: Chemical and mineralogical properties. Agron. No. 9, 2nd Ed., American Society of Agronomy, Madison.
51.Saieedifar, Z., Asgari, H., and Akram GHaderi, F. 2016. Effects of soil compaction on carbon and nitrogen sequestration in soil and wheat, soil physical properties and aggregates stability (Case study: Northern of Aq Qala). J. Water Soil. 29: 6. 1553-1566. (In Persian)
52.Sanchez, P.A., and Swaminathan, M.S. 2005. Hunger in Africa: the link between unhealthy people and unhealthy soils. The Lancet. 365: 9457. 442-444.
53.Shukla, M.K., Lal, R., and Ebinger, M. 2006. Determining soil quality indicators by factor analysis. Soil and Tillage Research.87: 2. 194-204.
54.Simon, A., Dhendup, K., Rai, P.B., and Gratzer, G. 2018. Soil carbon stocks along elevational gradients in Eastern Himalayan mountain forests. Geoderma Regional. 12: 28-38.
55.Singh, M.J., and Khera, K.L. 2009. Physical indicators of soil quality in relation to soil erodibility under different land uses. Arid Land Research and Management. 23: 152-167.
56.Sparling, G.P. 1997. Soil microbial biomass, activity and nutrient cycling as indicators of soil health. P 97-119, In: C., Pankhurst, B.M. Doube and V.V.S.R. Gupta (eds.), Biological indicators of soil health. Centre for Agriculture and Bioscience International, Wallingford, UK.
57.Thomas, G.W. 1996. Soil pH and soil acidity. P 475-490, In: J.M. Bingham (eds.), Methods of soil analysis. Part 3: Chemical methods. Soil Science Society of America, Madison.
58.Toledo, D.M., Galantini, J., Dalurzo, H., Vazquez, S., and Bollero, G. 2013. Methods for assessing the effects of land use changes on carbon stocks of subtropical oxisols. Soil Sci. Soc. Amer. J. 77: 5. 1542-1552.
59.Tóth, G., Hermann, T., Da Silva, M.R., and Montanarella, L. 2016. Heavy metals in agricultural soils of the European Union with implications for food safety. Environment International. 88: 299-309.
60.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: 703-707.
61.Walker, D.J., and Bernal, M.P. 2008. The effects of olive mill waste compost and poultry manure on the availability and plant uptake of nutrients in a highly saline soil. Bioresource Technology.99: 396-403.
62.Walsh, A. 1955. The application of atomic absorption spectra to chemical analysis. Spectrochimica Acta. 7: 108-117.
63.Zakii, J., Asoodar, M.A., and Almasi, M. 2014. Effect of hill slope, tillage and seeding techniques on soil erosion, alimentary elements, organic material and wheat grain yield under rain fed condition. Applied Field Crops Research. 27:
64.ZanjanProvince Governorate. 2014. Report of the Strategic Development Plan of Agricultural and Watershed of ZanjanProvince Based on the Meetings of Agricultural and Water Governance Room. Planning and Budget Office. (In
65.Zeng, D.H., Hu, Y.L., Chang, S.X., and Fan, Z.P. 2009. Land cover change effects on soil chemical and biological properties after planting Mongolian pine (Pinus sylvestris var. mongolica) in sandy lands in Keerqin, northeastern China. Plant and Soil. 317: 121-133.