1. Aerts, R., Chapin, F. S. 2000. The mineral nutrition of wild plants revisited: are-evaluation of processes and patterns. Advances in Ecological Research, 30: 1–67. 2. Black, C.A., Evans, D.D., Ensminger, L.E., White, G., Clark, F.E. 1965. Methods of soil analysis, Part 1, Physical analysis. American Society of Agronomy. Madison, WI. 3. Black, C.A. 1982. Methods of soil analysis, Part 2, chemical and microbiological properties,. American Society of Agronomy. Madison, WI. 4. Blank, R.R., Chambers, J.C., Roundy, B., Whittaker, A. 2007. Nutrient Availability in Rangeland Soils: Influence of Prescribed Burning, HerbaceousVegetation Removal, Overseeding with Bromus tectorum, Season, and Elevation. Rangeland Ecology and Management, 60(6): 644-655. 5. Gillian, F.S., Dick, D.A. 2010. Spatial heterogenieity of soil nutrients and plant species in herb- dominated communities of contrasting land use. Plant Ecology, 209: 83-94. 6. Ghafari, S., Ghorbani, A., Moameri, M., Mostafazadeh, R., Bidarlors, M. 2018. Compoaition and structure of species along altitude gradient in Moghan-Sabalan ranglands, Iran. Joyrnal of Mountain Science, 15(6): 1209-1228. 7. Hamid, M., Khuroo, A.A., Malik, A.h., Ahmad, R, Singh, C.P. 2021. Elevation and aspect determine the differences in soil properties and plant species diversity on Himalayan mountain summits. Ecological Research, 36(2): 340-352. 8. Jones, C., Jacobsen, J. 2001. Plant nutrition and soil fertility. Montana State University- Bozeman, 406. 9. Leonard, J. 1998. Relationships between vegetation cover and soil in arid and semi-arid area. Research Institute of Forests and Rangelands. USA. 10. Mekuria, W., Veldkamp, E., Haile, M., Nyssen, J., Muys, B., Gebrehiwot, K. 2007. Effectiveness of exclosures to restore degraded soils as a result of overgrazing in Tigray, Ethiopia. Journal of Arid Environments, 69: 270-284. 11. Moghaddam, S.M., Lamb, E.G., Gorbani, A., Arzani, H., Mobaser, J.A., Mostafazadeh, R. 2022. Interactions among climate, topography, soil structure and rangeland aboveground net primary production, The Rangeland Journal. 12. Schrumpf, M., Guggenberger, G., Valarezo, C., Zech, W.2001. Tropical montane rain forest soils. Development and nutrient status along an altitudinal gradient in the south EcuadorianAndes. Die Erde, 132: 43–60. 13. Shukla, M.K., Lal, R., Ebringer, M. 2004. Principal component analysis for predicting corn biomas and grian yeild. Soil Science, 169(3): 215-224. 14. Soethe, N., Lehmann, J., Engels, C. 2008. Nutrient availability at different altitudes in a tropical montane forest in Ecuador. Journal of Tropical Ecology, 24:397–406. 15. Suleymanov, A., Abakumov, E., Suleymanov, R., Gabbasova, I., Komissarov, M. 2021. The soil nutrient digital mapping for precision agriculture cases in the trans-ural steppe zone of Russia using topographic attributes. ISPRS International Journal of Geo-Information 10(4): 243P. 16. Tandon, HL.S. 1989. Fertilizer management in food crops. Fertilizer development and consultation organization. Journal of New Delhi India, 191-198. 17. Teaguea, W.R., Dowhowera, S.L., Bakera, S.A., Haileb, N., DeLaunea, P.B., Conovera, D.M. 2011.Grazing management impacts on vegetation, soil biota and soil chemical, physical and hydrological properties in tall grass prairie. Agriculture, Ecosystems and Environment, 141: 310–322. 18. Tessema, Z.K., de Boer, W.F., Baars, R.M.T., Prins, H.H.T. 2011. Changes in soil nutrients, vegetation structure and herbaceous biomass in response to grazing in a semi-arid savanna of Ethiopia. Journal of Arid Environments, 75: 662- 670. 19. Vetaas, O.R., Gerytnes, J.A. 2002. Distribution of vascular plant species richness and endemic richness along the Himalayan elevation gradient in Nepal. Global Ecology and Biogeography, 11:291-301. 20. Zhang, A., Li, X., Wu, S., Li, L., Jiang, Y., Wang, R., Ahmed, Z., Zeng, F., Lin, L., Li, L. 2021. Spatial pattern of C: N: P stoichiometry characteristics of alpine grassland in the Altunshan Nature Reserve at North Qinghai-Tibet Plateau. Catena, 207p.
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