The sacred groves in the Pachmarhi Biosphere Reserve (PBR) of India were studied to understand the concept of traditional ecological and biodiversity conservation systems. A questionnaire survey was conducted in the s...The sacred groves in the Pachmarhi Biosphere Reserve (PBR) of India were studied to understand the concept of traditional ecological and biodiversity conservation systems. A questionnaire survey was conducted in the selected villages of the PBR along with the survey of sacred groves. In 10 selected villages of the PBR 7 sacred groves were managed by Mawasi and 16 sacred groves by Gond tribal communities. Different deities were worshipped in the sacred groves and each grove was named after the deity dwelling in the respective sacred grove. A total of 19 such deities were recorded during the survey worshipped by the local people. In study area, various traditional customs associated with sacred groves were in practice. The sacred groves were rich in plant genetic diversity and were composed of many ethnobotanically useful species, including wild edible fruits, medicinal plants, fodder, fuelwood and timber yielding species. Given the importance of conservation of biodiversity and ecosystem attempts should be made to maintain the sanctity of sacred groves.展开更多
Sacred groves are patches of forests preserved for their spiri- tual and religious significance. The practice gained relevance with the spread of agriculture that caused large-scale deforestation affecting bio- divers...Sacred groves are patches of forests preserved for their spiri- tual and religious significance. The practice gained relevance with the spread of agriculture that caused large-scale deforestation affecting bio- diversity and watersheds. Sacred groves may lose their prominence nowadays, but are still relevant in Indian rural landscapes inhabited by traditional communities. The recent rise of interest in this tradition encouraged scientific study that despite its pan-Indian distribution, focused on India＇s northeast, Western Ghats and east coast either for their global/regional importance or unique ecosystems. Most studies focused on flora, mainly angiosperms, and the faunal studies concentrated on vertebrates while lower life fomas were grossly neglected. Studies on ecosystem functioning are few although observations are available. Most studies attributed watershed protection values to sacred groves but hardly highlighted hydrological process or water yield in comparison with other land use types. The grove studies require diversification from a stereo- typed path and must move towards creating credible scientific foundations for conservation. Documentation should continue in unexplored areas but more work is needed on basic ecological functions and ecosystem dynamics to strengthen planning for scientifically sound sacred grove management.展开更多
The present study was conducted in subtropical humid forests of Meghalaya to study the distributional pattern of species, floristic composition, community structure and tree population structure.Forest fragments of va...The present study was conducted in subtropical humid forests of Meghalaya to study the distributional pattern of species, floristic composition, community structure and tree population structure.Forest fragments of varying sizes(0.5 ha, 1 ha, 2 ha and 5 ha) were used in the study.All of the forest fragments are distributed within the same altitudinal range, and had similar rainfall and temperature regimes.Four forest fragments were sampled using random quadrats to analyze the impact of fragment size on tree diversity and population structure.Indices were used to compare the dispersion pattern of plant species, species diversity among fragments, and the heterogeneity and homogeneity of the fragments.A total of 45 tree species were recorded from all the fragments and simple correlation showed that the species richness was positively related to fragment size(n = 4, P<0.05).Other measures such as stand density, basal cover, diversity and dominance indices were unrelated to fragment size.Forest canopy was composed mainly of Castonopsis indica, C.armata, Schima khasiana and Engelhardtia spicata in all of the fragments.A majority of woody tree species were contagiously distributed which made the forest community highly patchy in nature.Low values of Sorensen's similarity index and high values of Whittaker's β-diversity index between the fragments suggest marked difference in the species composition among the fragments.The maximum stand density, basal area, Shannon diversity index and Simpson dominance index was recorded in a 5-ha fragment.Trees in lower girth classes(15-55 cm circumference at breast height, CBH) accounted for 52-86% of stand density in all fragments except in 0.5-ha fragments where middle girth class(55-95 cm CBH) accounted for 47% of the total stand density.The overall density of seedlings, saplings and adult trees formed a pyramidal structure, indicating that the period between the sapling and adult stage was a critical stage in tree life cycles, as the maximum mortality occurred during this period.T展开更多
Panax wangianus （Syn. Panax pseudoginseng） S. C. Sun （Araliaceae） is a critically endangered, medicinal plant of North-East India. The objective of this study was to determine how plant size affects flowering phen...Panax wangianus （Syn. Panax pseudoginseng） S. C. Sun （Araliaceae） is a critically endangered, medicinal plant of North-East India. The objective of this study was to determine how plant size affects flowering phenology and to evaluate the effect of climatic factors on flowering, fruiting and seed production. Data on vegetative and repro- ductive characters were monitored from 2016 individuals of Panax wangianus population in Law Lyngdoh, Smit sacred grove in Nongkrem, Shillong, India. Leaflet area was measured by a planimeter. Size variables of both vegetative and reproductive traits in different age classes were measured. Climatic factors were recorded from 2007 to 2009. Age was recorded by counting the number of bud scale scars on the rhizome. Light intensity and relative humidity were measured using a photometer, LiCor Model LI-189 and thermohygrometer respectively. Different climatic variables are correlated with vegetative and reproductive phenological events. Statistical analysis revealed that a strong positive correlation was observed between the age versus vegetative and reproductive characters, except 1%–2% plants showed neoteny. Morphological variations were observed in natural conditions on the basis of the number of prong and carpellate conditions. Phenological status revealed that most of the individuals of the age class 35–50 years and above 50 years contributed the most to flowering, fruiting and seed production. Age class was significant to predict the size of the plant and its reproductive capacity. Climatic factors such as temperature, precipitation and relative humidity show synergistic effect on both the vegetative and reproductive phases in Panax wangianus in the undisturbed Nongkrem sacred grove. The color of flowers of P. wangianus also varied depending upon the sunlight intensity. Therefore, in the view of conservationand management, the age class of 35–50 years and above 50 years is the most important for population sustainability.展开更多
文摘The sacred groves in the Pachmarhi Biosphere Reserve (PBR) of India were studied to understand the concept of traditional ecological and biodiversity conservation systems. A questionnaire survey was conducted in the selected villages of the PBR along with the survey of sacred groves. In 10 selected villages of the PBR 7 sacred groves were managed by Mawasi and 16 sacred groves by Gond tribal communities. Different deities were worshipped in the sacred groves and each grove was named after the deity dwelling in the respective sacred grove. A total of 19 such deities were recorded during the survey worshipped by the local people. In study area, various traditional customs associated with sacred groves were in practice. The sacred groves were rich in plant genetic diversity and were composed of many ethnobotanically useful species, including wild edible fruits, medicinal plants, fodder, fuelwood and timber yielding species. Given the importance of conservation of biodiversity and ecosystem attempts should be made to maintain the sanctity of sacred groves.
基金the funding from Indian Institute of Science for pursuing the research work
文摘Sacred groves are patches of forests preserved for their spiri- tual and religious significance. The practice gained relevance with the spread of agriculture that caused large-scale deforestation affecting bio- diversity and watersheds. Sacred groves may lose their prominence nowadays, but are still relevant in Indian rural landscapes inhabited by traditional communities. The recent rise of interest in this tradition encouraged scientific study that despite its pan-Indian distribution, focused on India＇s northeast, Western Ghats and east coast either for their global/regional importance or unique ecosystems. Most studies focused on flora, mainly angiosperms, and the faunal studies concentrated on vertebrates while lower life fomas were grossly neglected. Studies on ecosystem functioning are few although observations are available. Most studies attributed watershed protection values to sacred groves but hardly highlighted hydrological process or water yield in comparison with other land use types. The grove studies require diversification from a stereo- typed path and must move towards creating credible scientific foundations for conservation. Documentation should continue in unexplored areas but more work is needed on basic ecological functions and ecosystem dynamics to strengthen planning for scientifically sound sacred grove management.
文摘The present study was conducted in subtropical humid forests of Meghalaya to study the distributional pattern of species, floristic composition, community structure and tree population structure.Forest fragments of varying sizes(0.5 ha, 1 ha, 2 ha and 5 ha) were used in the study.All of the forest fragments are distributed within the same altitudinal range, and had similar rainfall and temperature regimes.Four forest fragments were sampled using random quadrats to analyze the impact of fragment size on tree diversity and population structure.Indices were used to compare the dispersion pattern of plant species, species diversity among fragments, and the heterogeneity and homogeneity of the fragments.A total of 45 tree species were recorded from all the fragments and simple correlation showed that the species richness was positively related to fragment size(n = 4, P<0.05).Other measures such as stand density, basal cover, diversity and dominance indices were unrelated to fragment size.Forest canopy was composed mainly of Castonopsis indica, C.armata, Schima khasiana and Engelhardtia spicata in all of the fragments.A majority of woody tree species were contagiously distributed which made the forest community highly patchy in nature.Low values of Sorensen's similarity index and high values of Whittaker's β-diversity index between the fragments suggest marked difference in the species composition among the fragments.The maximum stand density, basal area, Shannon diversity index and Simpson dominance index was recorded in a 5-ha fragment.Trees in lower girth classes(15-55 cm circumference at breast height, CBH) accounted for 52-86% of stand density in all fragments except in 0.5-ha fragments where middle girth class(55-95 cm CBH) accounted for 47% of the total stand density.The overall density of seedlings, saplings and adult trees formed a pyramidal structure, indicating that the period between the sapling and adult stage was a critical stage in tree life cycles, as the maximum mortality occurred during this period.T
文摘Panax wangianus （Syn. Panax pseudoginseng） S. C. Sun （Araliaceae） is a critically endangered, medicinal plant of North-East India. The objective of this study was to determine how plant size affects flowering phenology and to evaluate the effect of climatic factors on flowering, fruiting and seed production. Data on vegetative and repro- ductive characters were monitored from 2016 individuals of Panax wangianus population in Law Lyngdoh, Smit sacred grove in Nongkrem, Shillong, India. Leaflet area was measured by a planimeter. Size variables of both vegetative and reproductive traits in different age classes were measured. Climatic factors were recorded from 2007 to 2009. Age was recorded by counting the number of bud scale scars on the rhizome. Light intensity and relative humidity were measured using a photometer, LiCor Model LI-189 and thermohygrometer respectively. Different climatic variables are correlated with vegetative and reproductive phenological events. Statistical analysis revealed that a strong positive correlation was observed between the age versus vegetative and reproductive characters, except 1%–2% plants showed neoteny. Morphological variations were observed in natural conditions on the basis of the number of prong and carpellate conditions. Phenological status revealed that most of the individuals of the age class 35–50 years and above 50 years contributed the most to flowering, fruiting and seed production. Age class was significant to predict the size of the plant and its reproductive capacity. Climatic factors such as temperature, precipitation and relative humidity show synergistic effect on both the vegetative and reproductive phases in Panax wangianus in the undisturbed Nongkrem sacred grove. The color of flowers of P. wangianus also varied depending upon the sunlight intensity. Therefore, in the view of conservationand management, the age class of 35–50 years and above 50 years is the most important for population sustainability.
