2016 Vol.22 No.2 PP 191-199

RIPARIAN VEGETATIONAL DIVERSITY ALONG RIVER GANGA AT BHAGALPUR

ARVIND KUMAR AND BRAJ KISHOR

Post Graduate Studies & Research Centre,
Department of Botany,
T. N. B. College, BHAGALPUR (BIHAR)
^*Post Graduate Department of Biotechnology,
T. M. Bhagalpur University ,BHAGALPUR-812007
*Corresponding Author:
E-mail: akarvindkumar863@gmail.com

ABSTRACT

For the present study Ganga river bank near Prem Nagar, Sabour (Bhagalpur) was differentiated into two zones as site ‘A’ (Upper zone of the river bank) and site ‘B’ (Lower zone of the river bank). The species compositions, life form, biological spectrum, phenological and sociological characters of vegetation of two study sites were observed during pre-flowering stage. The 22 and 26 species were found at sites A and B respectively. In the biological spectrum therophytes and chamaephytes were dominant on both sites and called thero-chamaephytic flora. Phenological characters of the vegetation of two sites exhibited more annual species which completed life cycle within seven months. The quantitative analysis of the vegetation revealed that the greater area of both sites ‘A’ and ‘B’ were occupied by two dominant species Mollugo hitra and Ammania baccifera with 100% frequency and maximum important value index.

Key words : Biological spectrum, Ganga river, Life form, Phenology, Riparian vegetation.