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Singh, J. S.
- Survival and Growth Pattern of Three Tropical Forest Plantations Raised on Coal-mine Spoils of Central India
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Indian Forester, Vol 130, No 4 (2004), Pagination: 376-384Abstract
The present paper deals with the height and diameter growth in young plantations of the three native tree species (Albizia lebbek, Albizia procera, Tectona grandis) planted on mine spoil situated in tbe eastern section of Jayant Block of Singrauli coalfield in Madhya Pradesh, India. Highest survival rate was observed in the case of A. procera and the lowest in the case of T. grandis. Maximum specific height growth rate and specific diameter growth rate was exhibited by T. grandis whereas A.lebbek registered the minimum specific rate of increase in height and diameter. Aalysis of mean specific growth rates both for height and diameter indicated a decline with age in all the three species. However, the decline in the specific height and diameter growth rate of T. grandis was faster than in A. lebbek and A. procera.
- Influence of Mulching on Plant Growth Performance in Young Plantation Plots on Coal Mine Spoil
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Indian Forester, Vol 127, No 7 (2001), Pagination: 785-787Abstract
Plantation of Dendrocalamus strictus was raised on coal mine spoil at Jayant project, NCL, Singrauli in June 1993. Half and full dose of NPK fertilizer was applied. Full dose of NPK fertilizer was nitrogen as urea (60 kg ha-1), phosphorus as single superphosphate (30 kg ha-1) and potash as muriate of potash (40 kg ha-1). Half dose of NPK treatment increased the height growth more whereas full dose of NPK treatment enhanced markedly the number of culms/clump and diameter growth of D. strictus.- Evaluation of Direct Seeding of Tree Species as a Means of Revegetation of Coal Mine Spoils
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Indian Forester, Vol 126, No 11 (2000), Pagination: 1217-1221Abstract
The feasibility of direct seeding of tree species as a means of revegetating the flat (l.5 ha) and slopy areas (8 ha) of coal mine spoils was tested at Jayant Project, Northern Coal Fields Ltd., Singrauli. Direct seeding of tree species for 3-4 years with seeding of grasses and leguminous forbs is a potentially suitable technique for quick stabilization of flat and slopy areas of coal mine spoils. This technique is also beneficial in increasing the rate of recruitment of naturally colonizing plant species on mine spoils, which will ultimately restore the biodiversity and soil fertility of mine spoils, and will check the soil erosion from mine spoils.- Tree Canopy Development in Young Plantations Raised on Coalmine Spoil Affects the Growth of Herbaceous Vegetation
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Indian Forester, Vol 125, No 3 (1999), Pagination: 305-307Abstract
Pennisetum pedicellatum and Heteropogon contortus grasses were seeded in tree plantation plots on coal mine spoils at Jayant Project, NCL, Singrauli. After three year of raising of plantations the tree canopies affected the growth of seeded grasses. The dense canopy of D. strictus, P. pinnata and L. leucocephala completely eliminated the seeded grasses H. contortus and P. pedicellatum. Under the dense canopy for G. arborea only H. contortus grows well whereas P. pedicellatum was eliminated. Thus to increase the herbaceous plant biodiversity and for the establishment of stable plant communities thinning of plantation plots after 3-4 years is essential, and H. contortus should be preferred in ground seeding compared to P. pedicellatum.- Growth Performance of Certain Directly Seeded Plants on Mine Spoil in a Dry Tropical Environment, India
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Indian Forester, Vol 119, No 11 (1993), Pagination: 920-927Abstract
The growth performance of certain directly seeded leguminous trees, non-leguminous trees, leouminous forbs, grasses and crops were evaluated on 12 yr old flat surface coal mine spoil at Jhingurda Colliery, Northern Coal fields Ltd., Singrauli. Out of thirty plant species tried twenty four species showed satisfactory growth performance after one year of seeding. Cajanus cajon showed better growth performance on mine spoil than fertilized Agriculture Farm plots at Barkachha, Mirzapur. For quick revegetation of mine spoil seeding of plant species is a suitable method.- Nitrogen Release Pattern in Decomposing Oak and Pine Litter in Nainital Hills India
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Indian Forester, Vol 115, No 5 (1989), Pagination: 320-326Abstract
Nitrogen content in decomposing oak and pine leaf litter was investigated for Central Himalayan forests. Leaf litter placed at pine forest site decomposed slowly and that of oak decomposed faster. Release of N was slower in Pinus roxburghii compared to Quercus lanuginosa. However, the magnitude of N immobilization was greater in Pinus roxburghii compared to Quercus lanuginosa. The oak forest favour external cycling, maximising release of N, whereas pine forest favour internal cycling minimizing the loss to the environment.- Succession of Vegetation Types in the Tons Valley of the Garhwal Himalayas
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Indian Forester, Vol 88, No 4 (1962), Pagination: 289-296Abstract
The Tons valley lie. Between 30°55' and 31°28' N. latitude and 77°22' and 78°38' E. longitude in the Garhwal Himalayas. In the present paper physical features, climate, rock and soil, forest biota and vegetation of the area are described. The vegetation has been divided into various zones according to the altitude. Ecological status of vegetation types in each zone is discussed. Oaks form the climatic climax at the lower altitudes by Quercus incana Roxb. And at the higher altitudes by Quercus semecurpifolia Smith. Pinus roxburghii Sarg. Forests occurring in the subtropical zone are considered to be bioedaphic in nature forming a secondary succession to the oak climax and may be considered as pre-climax or sub-climax in Clement's terminology.- Ecological Observations along the River Banks at Allahabad, U. P.
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Authors
J. S. Singh
1,
Krishna Mitra
2
Affiliations
1 Department of Botany, Banaras Hindu University, Varanasi-5, IN
2 Botanical Survey of India, Central Botanical Laboratory, Calcutta, IN
1 Department of Botany, Banaras Hindu University, Varanasi-5, IN
2 Botanical Survey of India, Central Botanical Laboratory, Calcutta, IN
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Nelumbo - The Bulletin of the Botanical Survey of India, Vol 6, No 2-4 (1964), Pagination: 137-140Abstract
This paper embodies the ecological observations made along the exposed riverbeds and the immediate banks of the rivers Jamuna and Ganga at Allahabad during thé months of April to June in 1962 and 1963.The physical features, climate and soil of the area are discussed.
Botanical composition of the vegetation and the relative abundance, preference for habitat, types, and phenology of the important species are given.
The vegetation is characterised by the preponderance of annual plants and consists of the species of the wet meadow and dry meadow stages of Dudgeon (1920). The thorn scrub Stage is represented by Acacia arabica and Zizyphus jujuba.
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- Role of Provenance Trials in the Study of Population Differentiation
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Authors
Affiliations
1 Banaras Hindu University, Varanasi, IN
2 Kurukshetra University, Kurukshetra, IN
1 Banaras Hindu University, Varanasi, IN
2 Kurukshetra University, Kurukshetra, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 10, No 3-4 (1968), Pagination: 312-318Abstract
Wide distribution of many Linnean species across climatic, edaphic and biotic barriers may be either due to a wide ecological amplitude of the species as such, or to the presence of a number of distinct local populations, well adapted to the respective ecoclimates. These populations may show continuous variation along an envirormental gradient (ecocline) or discontinuous variation (ecotypes). The morphological or physiological adaptive characters are genetically fixed. Although a number of genecological techniques have been developed in the recent past, to differentiate such ecologic populations, the provenance trial technique has gained much importance. In the present communication the technique as well as some important results obtained through its use, both within and outside India, have been briefly discussed.Full Text
- Biological Spectrum of the Vegetation of North-East Haryana in India
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Authors
S. P. Jain
1,
J. S. Singh
2
Affiliations
1 Botany Department, Kurukshetra University, Kurukshetra, IN
2 Department of Botany, Kumaon University, Nainital, IN
1 Botany Department, Kurukshetra University, Kurukshetra, IN
2 Department of Botany, Kumaon University, Nainital, IN
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Nelumbo - The Bulletin of the Botanical Survey of India, Vol 26, No 3-4 (1984), Pagination: 145-148Abstract
The present paper deals with the study of the Biological spectrum of the vegetation of North-East Haryana. A detailed study of different life-forms indicated that Nanophanero phytes (N) and Hemicryptophytes (Hc) are poorly represented. The study also indicates the presence of therochamaephytic (42%, 22%) flora. The dominance of therophytes might have partly resulted from disturbance in vegetation due to heavy grazing and exploitation of forests for extensive cultivation. A comparison of the biological spectrum of this area with those of other regions of India reveals that the climate is semi-arid.Full Text
- Environment:A Futuristic View
Abstract Views :292 |
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Authors
Affiliations
1 Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
1 Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
Source
Current Science, Vol 113, No 02 (2017), Pagination: 210-217Abstract
The earth today is experiencing environmental conditions unprecedented in the history of the planet. Biodiversity is the basis of ecosystem services for human well-being. Reports indicate that the earth has indeed entered into a phase of mass extinction, and that the ecological footprint has substantially exceeded the biocapacity of the earth. It is argued that the ecological footprint must be reduced through sustainable development which should keep nature at its core. Anthropogenic activities have led to global environmental change which is adversely affecting human well-being. Global warming may result in a temperature rise of 4-5°C; the world food production may substantially decline, and the sea level may rise by up to 195 cm by 2100, inundating vast coastal areas. Almost four billion people are facing water scarcity. Three of the nine Rockstrom's planetary boundaries have already been exceeded. However, the encouraging fact is that the nations have agreed to limit global warming to 1.5°C, which gives us hope.Keywords
Biocapacity, Ecological Footprint, Global Warming, Planet Boundary, Societal Support, Sustainable Development.Full Text
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- Plant Diversity in Cities:Call for Assessment and Conservation
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Authors
Affiliations
1 Department of Botany, Banaras Hindu University, Varanasi - 221 005, IN
1 Department of Botany, Banaras Hindu University, Varanasi - 221 005, IN
Source
Current Science, Vol 115, No 3 (2018), Pagination: 428-435Abstract
Urbanization destroys natural habitats, displaces native ecosystems and results in regional extinction of native species. Urbanization is also argued to cause homogenization during which native species are replaced with non-native species. Negative impact of urbanization on ecosystems and biodiversity is usually focused upon while the fact that high levels of biodiversity may flourish inside cities are frequently ignored. Cities comprise a mixture of remnants of the pre-existing urban habitats and new urban habitats. The remaining fragments of natural landscapes, and other vegetation areas constitute the green infrastructure supporting the biological diversity of cities. Several biotopes such as lawns, hedges, parklands and street trees occur in the cities. In the cities ambient temperatures are higher than those of the surrounding rural areas, exhibiting the phenomenon of urban heat island. Urban vegetation experiences longer growing seasons and exhibits earlier greening than vegetation in the surrounding rural areas. Trees comprise the natural capital assets for cities as they provide immense benefits and ecosystem services for the wellbeing of city dwellers, although there are some disservices also. Studies on urban vegetation are very few in the tropics and particularly in India. In this article we review several aspects of plant diversity in cities in order to sensitize scientists, city managers and lay public to the need for more research on socioeconomic benefits and costs of city vegetation and to augment the vegetation within cities through conservation.Keywords
Benefits and Cost of City Trees, Non-Native Species, Plant Diversity, Urbanization.Full Text
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