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Annual nutrients budget for the grazed and ungrazed sites of an alpine expanse in North-West Himalaya, India

Author

Listed:
  • Neelam Rawat

    (Hemwati Nandan Bahuguna (HNB) Garhwal University)

  • B. P. Nautiyal

    (Mizoram University)

  • M. C. Nautiyal

    (Hemwati Nandan Bahuguna (HNB) Garhwal University)

Abstract

This work was undertaken to analyze nutrient contents of vegetation in an alpine meadow—Tungnath, North-West Himalaya, India. The study pertains to the uptake, transfer and release of four main macronutrients (organic carbon, total nitrogen, total potassium and total phosphorus) in grazed (exposed to extensive grazing by cattles) and ungrazed (grazing completely prohibited) communities. Mineral concentration was recorded higher for the ungrazed sites compared to the grazed sites, and maximum standing state of nutrients was found in roots. Belowground compartment (roots) contributed maximum share of mineral elements to soil. Litter nutrients release was low because of low microbial activity and continuous removal of phytomass. Observations reveal that there was very little amount of nutrient release from phytomass and vegetation in alpine are very poor source of mineral recycling. Low transfer rate of minerals from one compartment to other is adequate for greater amount of these minerals that are translocated back into the storage organs. A small proportion get removed through rain splash or through the removal of hay during grazing as relatively high release rates in ungrazed sites when compared to grazed sites was observed. This translocation can be considered as an important adaptation in alpine plants for survival during adverse environmental conditions, against all types of biotic pressures and also for regeneration in the forthcoming growing season.

Suggested Citation

  • Neelam Rawat & B. P. Nautiyal & M. C. Nautiyal, 2010. "Annual nutrients budget for the grazed and ungrazed sites of an alpine expanse in North-West Himalaya, India," Environment Systems and Decisions, Springer, vol. 30(1), pages 54-66, March.
    • Handle: RePEc:spr:envsyd:v:30:y:2010:i:1:d:10.1007_s10669-009-9243-3
    DOI: 10.1007/s10669-009-9243-3
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    References listed on IDEAS

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    1. M. C. Nautiyal & B. P. Nautiyal & Vinay Prakash, 2004. "Effect of Grazing and Climatic Changes on Alpine Vegetation of Tungnath, Garhwal Himalaya, India," Environment Systems and Decisions, Springer, vol. 24(2), pages 125-134, June.
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    1. Neelam Rawat & B. P. Nautiyal & M. C. Nautiyal, 2010. "Litter decomposition rate and nutrient release from different litter forms in a Himalayan alpine ecosystem," Environment Systems and Decisions, Springer, vol. 30(3), pages 279-288, September.

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