Phytosociology, primary production and nutrient retention in herbaceous vegetation of the forestry arboretum on the Aravalli hills at Jaipur
2002
Sharma, K.P. (University of Rajasthan, Jaipur (India). Department of Botany) | Upadhyaya, B.P. (Tribhuvan University, Biratnagar (Nepal). Department of Botany, M.M.A. Campus)
Present study was made on the foot hill, slope (middle hill) and top of the protected and unprotected hills of the Aravalli at Jaipur (26? 49'N, 75? 48'E, 436 m.s.l.). Herbaceous vegetation was therophytic in nature, exhibiting maximum number of species during rainy season. The biomass of herbaceous vegetation at the unprotected hill sites (264-462 g m(-2)) was higher than protected hill sites (201-338 gm(-2)). Annual net primary production was: protected hill 430-587 g m(-2); unprotected hill, 283-613 g m(-2). Nitrogen and phosphorus contents in the plant biomass varied from 2725-7723 mg m(-2). And 364-795 mg m(-2) respectively. The present study revealed an increase in the soil nutrients and species diversity at the protected hill and role of herbaceous vegetation in the conservation in the conservation of nutrients at both hills.
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