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D. Maity , G. G. Maiti

Abstract

Kanchenjunga Biosphere Reserve (KBR), the virgin pockets of the forests, in the Sikkim Himalaya, was known earlier as National Park since 1977 covering 1,784 km². It is now increased to 2619.92 km² and declared as biosphere reserve in 2000 (7^th February) to conserve the unique biodiversity of the area. It lies between 27°15'-27°57' North latitude and 88°02'-88°40' East longitude. The core zone is 1784 km² and the biffer zone is 835.92 km² under four sectors as Buffer Zone I-IV. The vascular plant diversity of KBR is remarkable having 1580 vascular plants distributed as pteridophytes, gymnosperms and angiosperms 106, 11 and 1,463 species respectively. As a result of the last six years study 6 new taxa have been described, two species discovered as new record, one for the state and one for the country and two new combinations have been made based on the collected specimens from the reserve. Floristically it belongs to temperate and alpine forest, then subtropical enriched with major components of herbs then shrubs and trees. This reserve has 22 endemic and 22 rare and threatened plants besides large number of horticultural elements. The other important accounts are 8 major timber yielding plants; 104 ethnomedicinal interest; 45 edible; 25 fodder; 6 dye yielding; 8 fiber yielding; 8 poisonous; 4 used as source of aromatic odour.

Keywords

Kanchenjunga Biosphere Reserve, Vascular Plant Diversity, Conservation

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D. Maity , S. O. Taha , S. Tambe , G. G. Maiti

Abstract

Barsey Rhododendron Sanctuary (BRS) was notified in 1998 by the Govt. of India specially to conserve the genetic diversity of Rhododendron species, situated within Sikkim Himalayas. The present study is an approach towards the presentation of geo-physical consequences as well as major floristic components. Total 11 maps and respective tables have been used specially to analyse the forest types, forest density, soil types, altitude, slope aspect etc. and to characterize the sanctuary. This sanctuary is still with maximum coverage of broad-leaved forests, but simultaneously soil erosion is moderate to high. BRS is a habitat to 30% (10 out of 37 speies) of Rhododendron at present known to Sikkim Himalaya. The study highlights the capability of remote sensing techniques for future planning, conservation and forest management.

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Sukla Chanda , A. Pramanik , G. G. Maiti

Abstract

The genus Populus L., belongs to the family Salicaceae Mirb. having 35 species of worldwide distribution. In India, total 8 taxa are known mainly distributed throughout the Himalayas. Species like P. alba L., P. balsamifera L., P. deltoides Bartram ex Marshall, P. euphratica Olivo and P. nigra L. var. italica Du Roi are confined to the north-western parts of India while P. gamblei Dode and P. glauca Haines are found in the north-eastern parts. P. ciliata Wall. ex Royle is the most common species found both in the eastern as well as western Himalayas. Nature of the axillary buds and the terminal buds, number of valves in the capsules are the useful characters for identification of these species but one of the most important feature is the leaf character through which one can easily identify the species in the field as well as while the species are in non-floriferous condition. The distribution pattern with two maps of these 8 species is discussed. An artificial key is provided along with illustrations of leaf characters for easy identity.

Keywords

Populus L., India, Distribution, Identification, Leaf Characters

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G. D. Pal ¹, G. G. Maiti ²

Affiliations
1 Botanical Survey of India, Itanagar, IN
2 Departmentof Botany, Kalyani University, Kalyani, IN

Abstract

No Abstract.

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L. K. Ghara ¹, G. G. Maiti ¹, J. K. Sikdar ¹

Affiliations
1 Botanical Survey of India, Howrah, IN

Abstract

No Abstract.

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