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Himachal Pradesh University (2010)

Flora of cold desert of Spiti _Himachal Pradesh_

Devi, Usha

Titre : Flora of cold desert of Spiti _Himachal Pradesh_

Auteur : Devi, Usha

Université de soutenance : Himachal Pradesh University

Grade : Doctor of Philosophy (PhD) in Botany 2010

Résumé partiel
Himachal Pradesh, which is bounded between 30°22" to 33°12" North latitudes and 75°47" to 79°04" East longitudes, is floristically very rich and shows a great amount of variation In its topography and climate. The unique nature of the flora of Himachal Pradesh has attracted numerous botanists since 1817 when William Spencer Webb visited Sabathu and William Moorcroft visited Kangra, Kullu and Lahaul & Spiti in 1819. Himachal Pradesh has 12 districts namely Bilaspur, Chamba, Hamirpur, Kangra, Kinnaur, Kullu, Lahaul & Spiti, Mandi, Shimla, Solan and Una. Angiosperms not only add to the biodiversity of Himalayan vegetation, but are an important component of forest ecosystems. Spiti tahsil of Lahaul & Spiti district of Himachal Pradesh, which covers an area of 7531 sq Km and lies between 31° 42’ - 33° N Latitudes and 77° 37’ - 78° 85’ E Longitudes, has not been fully explored botanically. A perusal of an up-to-date literature on angiospemnic flora with particular reference to Himachal Pradesh and district Lahaul & Spiti reveals that many of the publications, especially published before Independence, though excellent in the days when published are now hopelessly out of date both for specific and generic names. These are hardly used now. A lot of Information is available on the plant resources of Lahaul & Spiti, the emphasis had been mainly on medicinal, aromatic and other ethnobotanically important plants. However, the systematic and taxonomical information for Lahaul & Spiti is available only from ’Flora of Himachal Pradesh’ in 3 Volumes by Chowdhery and Wadhwa (1984) ; Flora of Lahaul-Spiti by Aswal and Mehrotra (1994), "Flora of cold deserts of western Himalaya Vol. I (Monocotyledons)" by Murti (2001) and Flora of Pin Valley National Park by Chandra Sekar and Srivastava (2009). The first one deal with only the enumeration of plants, second one lacks figures and third one deals with only monocots ; and the uses of few plants are included in these publications. However, detailed information on plants has been presented by Chandra Sekar and Srivastava (2009). Most of the other publications are not represented by coloured photographs of all the plants. Thus, an improvement is needed for updating these compilations. Keeping this in view the present study is undertaken with the sole objective of preparing a pictorial guide on Flora of Cold Desert of Spiti (Himachal Pradesh) with respect to their systematics, common and vernacular names, etymology, citations, morphological details, flowering and fruiting periods, present places of collection, habitat, distribution in the World, India and Himachal Pradesh, economic and ethnobotanical uses and coloured photographs.

Mots clés : Spiti, Lahaul, Mountain desert, Wool, Biodiversity, Plants

Présentation et version intégrale (Shodhganga)

Page publiée le 28 février 2021