Structure and floristic composition of tree stand in tropical forest in the Eastern Ghats of northern Andhra Pradesh,India |
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Authors: | C Sudhakar Reddy Shilpa Babar Giriraj Amarnath Chiranjibi Pattanaik |
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Institution: | C. Sudhakar Reddy Shilpa Babar Forestry and Ecology Division,National Remote Sensing Centre,Indian Space Research Organization,Hyderabad - 500 625,Andhra Pradesh,India.Giriraj Amarnath MENRIS Division,International Centre for Integrated Mountain Develop- ment,Kathmandu,NepalChiranjibi Pattanaik Salim Ali Centre for Ornithology & Natural History,Deccan Regional Sta- tion,12-13-588/B,Nagarjuna Nagar Colony,Tarnaka,Hyderabad-500 017,India. |
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Abstract: | The changes in species composition, abundance and forest stand structure were analyzed across altitudinal regimes in tropical
forests of Eastern Ghats of northern Andhra Pradesh, India. Three 1-ha plots were established with one each in low, medium
and high altitudes. A total of 153 species, 2129 stems (709 stems · ha?1) of ≥10 cm girth were enumerated. Species richness and diversity pattern varied along altitudinal gradient and increased
with the altitude. Species richness varied from 52 to 110 species·ha?1 and stand density from 639 to 836 stems·ha?1 with average basal area of 34.39 m2·ha?1. Shannon-Wiener index (H′) ranged from 4.55 to 5.17. Low altitude (i.e., Site 1) is dominated by Xylia xylocarpa (59.22) and Lagerstroemia parviflora (23.90), medium altitude (i.e., Site 2) by Xylia xylocarpa (45.50) Bursera serrata (17.29), and high altitude (i.e., Site 3) has Schleichera oleosa (28.25) Pterocarpus marsupium (26.55) as predominant species. Taxonomically, Rubiaceae (12 species), Fabaceae (12), Euphorbiaceae (11), Rutaceae (7) and
Lauraceae (7) were dominant families. Density-wise, Fabaceae, Combretaceae, Euphorbiaceae, Anacardiaceae and Myrtaceae were
abundant. Thus, conservation assessment based on altitudinal regimes and the information on species structure and function
can provide baseline information for monitoring and sustaining the biodiversity. |
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Keywords: | altitude conservation diversity Eastern Ghats speciescomposition |
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