India's phytodiversity is one of the most significant in the world.
India is one of the twelve mega-biodiversity centers in the world
and also an important center of origin of agrobiodiversity. It is
therefore, very important to study, document and conserve the plant
wealth of India and also of the world before its possible
extinction. There are convincing scientific, economic and
sociological reasons for giving priority to the conservation of the
major centers of plant diversity throughout the world. The
strategies to conserve the biodiversity include establishment of
protected area network and corridors with emphasis on appropriate
levels of management, reduction of anthropogenic pressure on
natural populations by cultivating them elsewhere, programmes of
augmentation, reintroduction and introduction of target taxa,
restoration of degraded habitats, etc. The conservation strategies
can be either, in-situ conservation of genetic resources within
their ecosystem and natural habitat or ex-situ conservation of
components of genetic material of biological diversity outside
their natural habitat. The choice of conservation strategy depends
upon the nature of the material to be conserved, i.e., the life
cycle and mode of reproduction, size of individual population and
ecological status. Ex-situ techniques include the establishment of
botanical and zoological gardens, banks of pollen, seed tissue
culture, DNA, etc. Establishment of forest reserves, national
parks, protected areas and on farm conservation of valuable plant
varieties is being promoted to facilitate their in-situ
conservation. The present book comprises of 29 contributions by
eminent scientists and research workers who are acknowledged
internationally in their respective fields. The book has been
prepared with the intention of providing sufficient depth of the
subject to satisfy the academic needs of the reader up to a higher
level, which is comprehensive and interesting. There are articles
on the various groups of plants, i.e., angiosperms, sedge
vegetation, grassland vegetation, wetland flora, sacred groves,
ethnobotany, pharmacognosy of drug-plants, phenology of medicinal
plants, changing water regimes, hotspots and biodiversity
conservation. In totality, it contains useful information for the
postgraduate students, teachers, scientists and researchers dealing
with Basic and Applied Botany, Ethnobotany, Environmental Biology,
Forestry and Agricultural Botany. Moreover, it will prove helpful
for Government departments dealing with forestry, social forestry
and the cultivation of medicinal plants.
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