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Seasonal fluctuation of soil fertility status associated with Mikenia micrantha H.B.K. infestation in Abhoypur and Dilli Reserve Forest of Assam, India

Author Affiliations

  • 1Silviculture and Forest Management Division, Rain Forest Research Institute, Jorhat, Assam, India
  • 2Silviculture and Forest Management Division, Rain Forest Research Institute, Jorhat, Assam, India
  • 3Silviculture and Forest Management Division, Rain Forest Research Institute, Jorhat, Assam, India

Res. J. Agriculture & Forestry Sci., Volume 6, Issue (10), Pages 1-5, October,8 (2018)

Abstract

Tropical forest is one of the most species diverse terrestrial ecosystems. Forest soil influences the composition of the forest stand, ground cover and rate of tree growth. Invasion of exotic species may contribute to changes the forest ecosystem through litter inputs and soil properties. Mikenia micrantha H.B.K., a noxious invasive weed has invaded forest of upper Brahmaputra valley creating a major impact on soil fertility. Two different forest i.e. Abhoypur and Dilli located in transition area between Assam-Nagaland and Assam-Arunachal Pradesh boarder was studied for seasonal fluctuation of soil fertility due to M. micrantha infestation. Average soil pH of all forest was quite acidic in nature. The value of pH (4.88) was in decreasing trend with increment of depth (4.39). Highest value was recorded during pre monsoon followed by monsoon, post monsoon and winter season respectively. Soil moisture gradually increased with increasing depth (41.59%) and found to be inversely proportional to pH. Highest amount of moisture content recorded in Monsoon season (41.59%) followed by post monsoon, pre monsoon and winter season (21.78%). Bulk density was increases with increasing soil depth and varied from 0.87g-cm3 to 1.08g-cm3 in different soil layer. Abhoypur RF recorded more pH, bulk density and moisture content as compared to Dilli reserve forest. Soil organic carbon varied from 1.38%-2.19% in surface layer during post monsoon season and least value was noticed in both forests during winter season (1.08%). Available nitrogen (246.5kgh-1) and organic carbon (2.19%) was recorded significantly high in Abhoypur RF (2.19%) during post monsoon season. The range of available phosphorus and exchangeable potassium were observed from 24.59kg h-1 to 38.55kg h-1 and 284.22kg h-1 to 313.2 kg h-1 respectively during pre monsoon season and gradual declination was observed by monsoon, post monsoon and winter season. Comparatively more value was noticed in surface soil which gradually decreases in deeper layer. Observations concluded that invasion of M. micrantha had profound effects on the soil fertility which may be detrimental to natural vegetation and management strategy for control of invasions to be needed for protection of forests.

References

  1. Binkley D. and Giardina C. (1998)., Why do tree Species affect soils? The warp and woof of tree-soil interactions., Biogeo-chemistry, 42, 89-106.
  2. Lekhak H.D. and Lekhak B. (2003)., Natural resource conservation and sustainable development in Nepal., Kshitiz Publication, Kirtipur, Nayabazar, Kathmandu, Nepal.
  3. Augusto L., Ranger J., Binkley D. and Rothe A. (2002)., Impact of several common tree species of European temperate forests on soil fertility., Annals of Forest Science, 59(3), 233-253. April 2002 with 558 Reads DOI: 10.1051/forest:2002020
  4. Arunachalam A., Boral L. and Maithani K. (1994)., Effects of ground-fire on nutrient contents in soil and litter in a subtropical forest of Meghalaya., J. Hill Res, 7, 13-16.
  5. Bajrachyarya R.M., Sitaula B.K., Sharma S. and Jeng A. (2007)., Soil quality in the Nepalese Context-An analytical review., Intl. J. Eco. Enviro. Sci., 33(2-3), 143-158.
  6. Sharma S.D., Singh B.R., Sitaula B. and Gupta M.K. (2006)., Influence of Land cover on soil properties in watersheds of Garhwal Himalayas, India., Ann. For, 49, 16-34.
  7. Young A. (1985)., Effect of Trees on Soils., Commonwealth Ser Council.
  8. Lowe S., Browne M., Boudjelas M. and Poorter M. (2000)., 100 of the world's worst invasive alien species., Invasive Species Specialist Group (International Union for the Conservation of Nature), Auckland. www.issg.org/booklet.pdf
  9. Zhang L.Y., Ye W.H., Cao H.L. and Feng H.L. (2004)., Mikania micrantha HBK in China-an overview., Weed Research, 44(1), 42-49.
  10. Miki T. and Kondoh M. (2002)., Feedbacks between nutrient cycling and vegetation predict plant species coexistence and invasion., Ecology Letters, 5(5), 624-633. doi: 1046/j.1462-0248.2002.00347.x
  11. Li W.H., Zhang C.B., Jiang H.B., Xin G.R. and Yang Z.Y. (2006)., Changes in soil microbial community associated with invasion of the exotic weed, Mikania micrantha HBK., Plant and Soil, 281(1-2), 309-324. doi:1007/s1104-005-9641-3.
  12. Chen B., Peng S., Chen L., Li F. and Wang G.X. (2009)., Effects of aqueous extracts of Mikania micrantha HBK on nutrients release from the forests litter at three succession stages in south China., Allelopathy Journal, 23(2), 453-460.
  13. Pandey S.C., Puri G.S. and Singh J.S. (1968)., Research Methods in Plant Ecology., Asia Publishing House, Bombay.
  14. Walkley A. and Black I.A. (1934)., An examination of the Degtjareff method for determining soil organic matter and a proposed modification to the chromic acid titration method., Soil Sci., 37, 29-30.
  15. Jackson M.L. (1973)., Soil Chemical Analysis., Wisconsin Prentice Hall of India Pvt. Ltd., New Delhi, 46.
  16. Ehrenfeld J.G., Kourtev P. and Huang W. (2001)., Changes in soil functions following invasions of exotic understory plants in deciduous forests., Ecological applications, 11(5), 1287-1300.
  17. Acharya R. and Shrestha B.B. (2012)., Physico-chemical characteristics of soil of a mixed Shorea robusta forest Rupandehi district, Nepal., J. Nat. Hist.Mus. 26, 155-162.
  18. Anup A., Bhandari G., Wagle S.P. and Banjade Y. (2013)., Status of soil fertility in a community forest of Nepal., Int. J. Env., 1(1), 56-67.
  19. Gogoi M., Mahanta S.J. and Rajkumari Nitu (2011)., Impact of Industrial extension on the phytodiversity of Sivasagar district of Northeast India with special reference to ONGCL., Internat. J. Plant Sci., 6(2), 227-232.
  20. Sharma R.P. and Gupta M.K. (2015)., Soil fertility Status and Soil quality index in Tibrekot Community Forest, Western Nepal., Ind. J. of For., 38(3), 201-208.
  21. Sakin E., Deliboran A. and Tutar E. (2011)., Bulk density of Harran plain soils in relation to other soil properties., African Journal of Agricultural Research, 6(7), 1750-1757.
  22. Kourtev P.S., Ehrenfeld J.G. and Häggblom M. (2003)., Experimental analysis of the effect of exotic and native plant species on the structure and function of soil microbial communities., Soil Biology and Biochemistry, 35(7), 895-905.
  23. Sharma G.P. and Raghubanshi A.S. (2010)., How Lantana invades dry deciduous forest: a case study from Vindhyan highland, India., Trop. Ecol., 51(2), 305-316.
  24. Brady N.C. (2000)., The Nature and Properties of Soils., Tenth edition, Prentice Hall of India Private Limited, New Delhi.
  25. Regmi B.D. and Zoebisch M.A. (2004)., Soil fertility status of Bari and Khet land in a small watershed of middle hill region of Nepal., Nepal Agricultural Research Journal, 5, 38-44.
  26. Hierro J.L. and Callaway R.M. (2003)., Allelopathy and exotic plant invasion., Plant and soil, 256(1), 29-39. doi: 10.1023/A: 1026208327014.
  27. Wolfe B.E. and Klironomos J.N. (2005)., Breaking New Ground: Soil Communities and Exotic Plant Invasion., Bioscience, 55(6), 477-487. doi: 10.1641/0006-3568(2005) 055[0477:BNGSCA]