1. Banerjee, S.K., Singh, S.B., Nath, S. and Banerjee, S.P., 1986. Comparison of some physicochemical properties of soils of varying age plantations of Cryptomeria japonica. Journal of Indian Society of Soil Science, 34, pp.357-61
2. Bray, R.H. and Kurtz, L.T., 1945. Soil-phosphorus extraction methodologies: A review. African Journal of Agricultural Research, 1(5), pp.159-161
3. Currie, D.J. and Francis, A.P., 2004. Regional versus climate effect on taxon richness in Angiosperms: reply to Qian and Ricklefs. American Naturalist, 163, pp.780-785 https://doi. org/10.1086/383596
4. Curtis, J.T., 1959. The Vegetation of Wisconsin. University of Wisconsin Press, Madison
5. Curtis, J.T. and Cottom, G., 1950. Plant Ecology Work Book. Laboratory Field Reference Manual. Burgess Publication Co., Minnesota https://doi.org/10.1086/383596
6. Curtis, J.T. and McIntosh, R.P., 1950. The interrelations of certain analytical and synthetic phyto-sociological characters. Ecology, 31, pp.434 https://doi.org/10.2307/1931497
7. Dhanai, C.S. and Panwar, V.P., 1999. Role of aspect and soil on the structure and composition of Quercus floribunda natural stands in Garhwal Himalaya. Indian Forester, 125(12), pp.1204-1213
8. Dhanai, C.S. and Panwar, V.P., 2008. Impact of aspect and soil on the structure and composition of Quercus glauca natural stands in Himalayan subtropical forest. Annals of Forestry, 16 (1), pp.25-32
9. Dhanai, C.S., Panwar, V.P. and Sharma, C.M., 2000. Effect of aspect and soil on the structure of Quercus leucotrichophora natural stands in Western Himalaya. Indian Journal of Forestry, 23(3), pp.349-356
10. Divakara, B.N., 2015. Floristic analysis, phytosociological studies and regeneration status of tree species in sal forests of Jharkhand, India, in XIV world forestry congress Durban, South Africa. https://www.researchgate.net/publication/286443392
11. Futuyma, D.J., 1998. Evolutionary Biology, 3rd edn. Sinauer, Sunderland, MA https://doi.org/10.1017/CBO 9780511781193.003
12. Gairola, S., Rawal, R.S. and Todaria, N.P., 2008. Forest vegetation patterns along an altitudinal gradient in sub-alpine zone of West Himalaya, India. African Journal of Plant Science, 2(6), pp.042-048
13. Gaur, R.D., 1982. ‘Dynamics of vegetation of Garhwal Himalayas’, in Paliwal G.S. (ed.), Vegetational Wealth of the Himalayas, Puja Publishers, New Delhi
14. Givnish, T.J., 1999. On the causes of gradients in tropical tree diversity. Journal of Ecology, 87, pp.193-210 https://doi.org/10.1046/j.1365- 2745.1999.00333.x
15. Gonzalez-Espinosa, M., Rey-Benayas, J.M., Ramirez-Marcial, N., Huston, M.A. and Golicher, D., 2004. Tree diversity in the northern Neotropics: regional patterns in high diverse Chiapas, Mexico. Ecograph, 27, pp.741-756 https://doi.org/10.1111/j.0906- 7590.2004.04103.x
16. Gupta, R.S., 1951. Recurrence in drought conditions in mortality in sal forests of Uttar Pradesh. Journal of the Indian Botanical Society, 40(1), pp.25-33
17. Hanway, J.J. and Heidel, H., 1952. Soil analysis methods as used in Iowa State College, Soil Testing Laboratory, Iowa State College Bull. 57, pp.1-131
18. Jackson, M.L., 1973. Soil Chemical Analysis. Prentice-Hall of India Pvt. Ltd., New Delhi
19. Khan, N., Ahmed, M., Siddiqui, M., Bibi, S. and Irshad, A., 2012. A phytosociological study of forest and non-forest vegetation of district Chitral, Hindukush Range of Pakistan. Fuuast Journal of Biolojgy, 2(1), pp.91-101
20. Lal, B. and Lodhiyal, L.S., 2015. Vegetation structure, biomass and carbon content in Pinus roxburghii Sarg. dominant forest of Kumaun Himalaya. Environment and We An International Journal of Science & Technology, 10, pp.117-124
21. Lavorel, S. and Garnier, E., 2002. Predicting the effects of environmental changes on plant community composition and ecosystem functioning: revisiting the Holy Grail. Functional Ecology, 16, pp.545-556 https://doi.org/10.1046/j.1365-2435.2002.00664.x
22. Leigh, E.G., 1965. On the relation between productivity diversity and stability of a community. Proceedings of the National Academy of Sciences, 53, pp.777-783 https://doi.org/10.1073/pnas.53.4.777
23. Lodhiyal, L.S., Lodhiyal, N. and Pathak G.C., 2016. ‘Plant diversity and vegetation composition of Shiwalik forests along an altitudinal gradient in the Kumaun Himalaya, India’, in: R. Chand and W. Leimgruber (eds.), Globalization and Marginalization in Mountain Regions, Perspectives on Geographical Marginality 1, Springer International Publishing, Switzerland https://doi. org/10.1007/978-3-319-32649-8_16
24. Loreau, M., Naeem, S., Inchausti, P., Bengtsson, J., Grime, J.P., Hector, A., Hooper, D.U., Huston, M.A., Raffaelli, D., Schmid, B., Tilman, D. and Wardle, D.A., 2001. Biodiversity and ecosystem functioning: current knowledge and future challenges. Science, 294, pp.804-808 https://doi.org/10.1126/science.1064088
25. Misra, R., 1968. Ecological workbook. Calcutta: Oxford and IBH Publishing Company
26. Mittelbach, G. G., Schemske, D. W., Cornell, H. V., Allen, A. P., Brown, J. M., Bush, M. B., Harrison, S.P., Hurlbert, A.H., Knowlton, N., Lessios, H.A., McCain, C.M., McCune, A.R., McDade, L.A., McPeek, M.A., Near, T.J., Price, T.D., Ricklefs, R.E., Roy, K., Sax, D.F., Schluter, D., Sobel, J.M. and Turelli, M., 2007. Evolution and the latitudinal diversity gradient: speciation, extinction and biogeography. Ecology letters, 10(4), pp.315-331 https://doi.org/10.1111/j.1461-0248.2007.01020.x
27. Mori, A.S., Lertzman, K.P. and Gustafsson, L., 2017. Biodiversity and ecosystem services in forest ecosystems: a research agenda for applied forest ecology. Journal of Applied Ecology, 54(1), pp.12-27
28. Naidu, M.T. and Kumar, O.A., 2016. Tree diversity, stand structure, and community composition of tropical forests in Eastern Ghats of Andhra Pradesh, India. Journal of Asia-Pacific Biodiversity, 9(3), pp.328-334 https://doi.org /10.1016/j.japb.2016.03.019
29. Norton, B.A., Thomson, L.J., Williams, N.S.G. and McDonnell, M.J., 2014. The effect of urban ground covers on arthropods: an experiment. Urban Ecosystem, 17, pp.77-99 https://doi. org/10.1016/j.japb.2016.03.019
30. Odum, E.P., 1971. Fundamentals of Ecology. W.B. Saunders and Co. Philadelphia
31. Olsen, S., Cole, C., Watanabe, F. and Dean, L., 1954. Estimation of available phosphorus in soils by extraction with sodium bicarbonate, USDA Circular Nr 939, US Gov. Print. Office, Washington, D.C.
32. Ossola, A., Nash, M.A., Christie, F., Hahs, A.K. and Livesley, S.J., 2015. Urban habitat complexity affects species richness but not environmental filtering of morphologically-diverse ants. Peer J 3:e1356 https://doi.org/10.7717/peerj.1356
33. Phillips, E.A., 1959. Methods of Vegetation Study, A Holt Dryden Book. Henry Hott and Co. Inc
34. Pielou, E.C., 1966. The measurement of diversity in different types of biological collections. Journal of Theoretical Biology, 13, pp.131-144 https://doi.org/10.3126/hjs.v1i2.207
35. Pokhriyal, P., Uniyal, P., Chauhan, D. and Todaria, N., 2010. Regeneration status of tree species in forest of Phakot and Pathri Rao watersheds in Garhwal Himalaya. Current Science, 98(2), pp.171-175
36. Ram, J., Kumar, A. and Bhatt, J., 2004. Plant diversity in six forest types of Uttaranchal, Central Himalaya. India. Current Science, 86(7–10), pp.975–978
37. Risser, P.G. and Rice, E.L., 1971. Diversity in tree species in Oklahoma upland forest species. Ecology, 52, pp.876-880 https://doi. org/10.2307/1936036
38. Sagar, R. and Singh, J.S., 2005. Structure, diversity, and regeneration of tropical dry deciduous forest of northern India. Biodiversity and Conservation, 14(4), pp.935-959 https://doi.org/10.1007/s10531-004-0671-6
39. Saxena, A.K. and Singh, J.S., 1984. Tree population structure of certain Himalayan forest associations and implication concerning their future composition. Vegetatio, 58, pp.61-69 https://doi. org/10.1007/BF00044928
40. Shannon, C. and Wiener, E., 1963. The mathematical theory of communications. Univ. Illinois. Urbana, pp. 117
41. Sharma, C.M., Gairola, S., Ghildiyal, S.K. and Suyal, S., 2010. Physical properties of soils in relation to forest composition in moist temperate valley slopes of the Central Western Himalaya. Journal of Forest Science, 26(2), pp.117-129
42. Simpson, E.H., 1949. Measurement of diversity. Nature, 163, pp.688 https://doi.org/10.1038/163688a0
43. Simpson, G.G., 1964. Species diversity of North American recent mammals. Systematic Zoology, 13, pp.57-73 https://doi. org/10.2307/sysbio/13.1-4.57
44. Singh, B., Nath, S., Das, P.K., Singh, S.B. and Banerjee, S.K., 1987. Soil characteristics under introduced Cryptomeria japonica (Dhupi) in Darjelling himalayan region. Indian Forester, 113(3), pp.191-201
45. Singh, J., Rajasekaran, A., Negi, A.K. and Panwar V.P., 2016. Wild edible plant diversity in Pinus gerardiana Wall. ex D. Don forests of Kinnaur district, Himachal Pradesh, India. Indian Journal of Forestry, 39(1), pp.13-20
46. Singh, N., Tamta, K., Tewari, A. and Ram, J., 2014. Studies on vegetational analysis and regeneration status of Pinus roxburghii Roxb. and Quercus leucotrichophora forests of Nainital Forest Division. Global Journal of Science Frontier Research, 14(3), pp.41-47
47. Singh, R., 1976. Structure and net community production of the herbaceous vegetation in the sand dune regions around Pilani, Rajasthan. Ph.D. Thesis, BITS Pilani, Rajasthan
48. Singh, R. and Joshi, M.C., 1979. Floristic composition and lifeforms of sand dune herbaceous vegetation near Pilani, Rajasthan. Indian Journal of Ecology, 6, pp.9-19
49. Soni, P., Vasistha, H.B. and Kumar, O.M., 1994. ‘Revegetation of abandoned limestone mine in Mussoorie hill’, in Prakash, R.(ed.), Advances in Forestry Research in India, International Book Distributers, Dehradun
50. Subbiah, B.V. and Asija, G.L., 1956. A rapid procedure for the determination of available nitrogen in soils, Current Science, 25, pp.259-260
51. Suoheimo, J., 1995. Natural regeneration potential of mixed sal (S. robusta) forests in Nepal, Vol II. FMUDP working paper no 18. Kathmandu: National Forest Division, Department of Forests, Ministry of Forest and Soil Conservation, HMGN
52. Tewari, J.C., 1982. Vegetational analysis along altitudinal gradients around Nainital. Ph.D. Thesis, Kumaon University, Nainital, India
53. UNESCO, UNEP and FAO, 1978. Tropical forest ecosystem: A state of knowledge report. UNESCO, Paris, France
54. Walkley, A. and Black, I.A., 1934. An examination of degt jareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Science, 37, pp.29-37 https://doi.org/10.2307/3673255
55. Whittaker, R.H., 1972. Evolution and measurement of species diversity. Taxon, 21, pp.213-251 https://doi.org/10.2307/3673255
56. Whittaker, R.H., 1975. Communities and Ecosystems. 2nd ed. Mac. Milliam Pub. Co. New York
57. Wiens, J.J. and Donoghue, M.J., 2004. Historical biogeography, ecology and species richness. Trends in Ecology and Evolution, 19, pp.639-644 https://doi.org/10.1016/j.tree.2004.09.011
58. Wilde, S.A., Voigt, G.K. and Iyer, J.G., 1964. Soil and plant analysis for tree culture. In: Soil and Plant Analysis for Tree Culture. Oxford Publishing House