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Vikrant Jaryan Sanjay Kr. Uniyal R. C. Gupta R. D. Singh 《Environmental monitoring and assessment》2013,185(7):6129-6153
Recognizing the array of effects that invasive alien species have, documenting their status from biodiversity rich regions has been much emphasized. Lack of such studies is a major limitation that hampers proper management of alien species. The present paper, therefore, documents the alien flora of the Indian Himalayan state of Himachal Pradesh (HP) based on data obtained from literature and herbarium records. The alien flora of HP comprises of 497 species belonging to 85 families. Majority of them belong to family Asteraceae (59 species), followed by Poaceae (47 species) and Fabaceae (43 species). Amongst the genera, Ipomoea (9 species), Eucalyptus and Euphorbia (7 species each) are the most predominant. Herbs constitute the majority (i.e., 73 %) of alien species and a large percentage of them (i.e., 22.94 %) have South America as their native region. Further, of the total alien species, 248 are intentional introductions and majority (31 % species) have been introduced for ornamental purposes. It was revealed that 34 % species have naturalized while 29 % species have become invasive. Today, in addition to human-disturbed landscapes, alien species have also been reported from dense forests. Himalaya being a biodiversity hotspot and HP being a bio-rich Himalayan state, it is hoped that this inventory and assessment of alien flora will help in designing informed management and monitoring strategies against problematic plant invasions in the state. 相似文献
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Kulkarni VA Naidu VS Jagtap TG 《Journal of environmental biology / Academy of Environmental Biology, India》2011,32(2):213-219
Estuaries and tidal creeks, harboring mangroves particularly, face tremendous anthropogenic pressures. Expansion of mega cities and the thermal power plants are generally proposed in the vicinity of estuaries and creek, due to the feasibility of intake and discharge of water for cooling. Discharges from such developments remain constant threat of increasing thermal pollution and affecting the quality of environment. The baseline information on prevailing quality of aquatic environment comes handy for understanding alterations due to such activities. Principle component analysis (PCA) revealed that temperature, pH, salinity, suspended solids, DO, BOD and phaeophytins are major parameters influencing the creek system. Heated effluents may have direct and adverse impacts on these parameters, altering biotic constituents. Hence, periodic and detailed observations are necessary to estimate exact response of biotic communities to changing environment. The present paper is based on case study, projecting a power plant in the vicinity of major mangrove habitats of Dharamtar creek. 相似文献
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Vikrant Jaryan Sanjay Kr. Uniyal Gopichand R. D. Singh Brij Lal Amit Kumar Varun Sharma 《The Environmentalist》2010,30(2):101-110
Recognizing the importance of sacred groves in biodiversity conservation and management, and the recent threats to them, the
present study was conducted in Shivbari sacred grove of Himachal Pradesh. The study aimed at documenting the floral wealth
of Shivbari and promoting plantation of indigenous species in participation with local people. For this, systematic field
surveys in different seasons were conducted in Shivbari from April 2005 to November 2009, and liaison was maintained with
the local community and temple management authority for gaining insight into the history and problems of Shivbari and initiating
plantation activities. A total of 69 flowering plant species were identified inside the grove, which include 14 trees, 9 shrubs,
3 lianas and 43 herbs. This represents almost 2% of the total flowering plant species occurring in the state of Himachal Pradesh.
Mallotus philippensis followed by Putranjiva roxburghii was the most dominant tree species. Adhatoda
zeylanica was the most common shrub species, while Achyranthes aspera was the most common herb species. The grove harbours 23 plants species that are in high demand in the market, and at the
same time also influences the microclimate of the area. The temperature inside the grove was significantly lower than the
temperature outside the grove. The recent changes in socio-economic status of the local people and a shift towards market-oriented
economy have threatened the survival of Shivbari. However, the deeply held beliefs of the pilgrims, local people and priest
offer a ray of hope. During the course of the study, 3,000 plants were planted inside the grove out of which 60% have survived. 相似文献
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Raj Savan K. Yadav Vikrant Bhadu Gopala R Patidar Rajesh Kumar Manoj Kulshrestha Vaibhav 《Environmental science and pollution research international》2021,28(34):46336-46342
Environmental Science and Pollution Research - Fluorescent graphene quantum dots (GQDs) are nanomaterials which possess unique properties that show great potential in different applications. In... 相似文献
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Rana Vishal Singh Sharma Sunny Rana Neerja Sharma Umesh Patiyal Vikrant Banita Prasad Heerendra 《Environmental Chemistry Letters》2022,20(6):3971-3991
Environmental Chemistry Letters - Climate change is impacting agriculture through a rise in greenhouse gases, higher temperatures and extreme precipitation patterns, with adverse consequences such... 相似文献
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