Species Composition and Diversity of Tree Species in Nanta Forest Region in Kota District, Rajasthan, India (original) (raw)
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Journal of Asia-Pacific Biodiversity, 2016
This study was carried out in a temperate forest for enumeration of floristic diversity and community characteristics analysis of the Talle Wildlife Sanctuary. A random sampling approach was adopted. Altogether, 63 species were recorded from the sampled area (0.2 ha). Family dominance results showed that Lauraceae was the most dominant followed by Fagaceae. Seventy percent of species showed low frequency distribution and species having higher frequency classes were almost absent or represented by only a few species. Dominance distribution of species resulted in a log normal distribution pattern which further signifies that the forest community was heterogeneous in nature. Species Prediction and Diversity Estimation analysis categorized 80% of the species as a rare species group and 20% as abundant species group. Estimation of coefficient of variation showed that rare species have equal detection possibilities in the sampled area. Distribution of basal cover in different girth classes indicates a reverse trend to that of stand density. The results of this study show that the forest community composition is highly clustered and loosely colonized in nature.
Assessment of tree diversity in tropical deciduous forests of Northcentral Eastern Ghats, India
Geology, Ecology, and Landscapes
The rapid inventory study provides information on the tree species diversity and stand structure in tropical deciduous forests of Northcentral Eastern Ghats, India. Tree diversity and its relation to habitat was explored using tree data-set of 12 belt transects (5 × 1000 m) totaling 6 ha in the study area. A total of 135 plant taxa (≥15 cm gbh) belonging to 105 genera of 45 families with 2959 individuals were recorded. Anogeissus latifolia, Xylia xylocarpa, Cleistanthus collinus and Lannea coromandelica were the predominant plant taxa where the members of Euphorbiaceae, Rubiaceae, Anacardiaceae and Mimosaceae contributed maximum stand density and species richness. The stand density ranged from 395 to 573 individuals ha −1 while basal area varied from 13.05 to 28.42 m 2 ha −1. Shannon-Weiner index (H′) ranged from 3.59 to 4.05 while Simpson index from 0.97 to 0.98, evenness index from 0.66 to 0.78 and species richness Margalef index ranged from 7.29 to 12.99. The study provides a baseline data for the management of protected areas in developing countries like India and it shows the potential of in situ method in the conservation natural areas.
TREE SPECIES COMPOSITION AND DIVERSITY IN SUBTROPICAL FOREST OF MANIPUR, NORTH-EAST INDIA
2017
Forest conservation and management require proper understanding of the structure and composition of particular forests in relation to other forests, and its surrounding land uses. The present study deals on the tree species diversity and status of indigenous tree species in the two subtropical mixed broad leaved forests of Senapati district, Manipur, Northeast India.-1 Vegetation analysis of two forest sites showed high tree densities (2631-3079 ind. ha). Fagaceae was found to be dominant family at both sites. The Shannon diversity index in both the sites was in the range of 2.44-2.80 and Simpson index was recorded to be 0.10-0.13. The quantitative similarity index 0.33 showed that the two forest sites have less species in common. The reverse J-shaped density distribution structure curve showed that tree diversity decreased with increase in girth classes. In total, the two forest sites showed a good stage of growing period with high species composition.
European Journal of Ecology, 2015
Tree species inventories, particularly of poorly known dry deciduous forests, are needed to protect and restore forests in degraded landscapes. A study of forest stand structure, and species diversity and density of trees with girth at breast height (GBH) ≥10 cm was conducted in four management zones of Bannerghatta National Park (BNP) in the Eastern Ghats of Southern India. We identified 128 tree species belonging to 45 families in 7.9 hectares. However, 44 species were represented by ≤ 2 individuals. Mean diversity values per site for the dry forest of BNP were: tree composition (23.8 ±7.6), plant density (100.69 ± 40.02), species diversity (2.56 ± 0.44) and species richness (10.48 ± 4.05). Tree diversity was not significantly different (P>0.05) across the four management zones in the park. However, the number of tree species identified significantly (P<0.05) increased with increasing number of sampling sites, but majority of the species were captured. Similarly, there were ...
TREE SPECIES COMPOSITION AND DIVERSITY IN FOREST ECOSYSTEM OF RANCHI, JHARKHAND, INDIA
Indian Forester, 2020
Tropical deciduous forests are rich in diversity and needs continuous conservation due to recent threats. The present study was done in these types of forests. A total of 30 tree species belonging to 14 families were recorded. Fabaceae was the dominant family having 12 species. Total stem density in the present study was found to be 1359.75 individual ha-1. Tree species density varied from 1.25-513.5 individual ha-1. Stem density was found to be maximum (545 ha-1) in the girth class 25-30 cm, which accounts for 40.08 % of the total stem density. Basal area varies from 0.053 – 31.44 m2ha-1 for different species. Shorea robusta exhibited the highest IVI (48.59) which indicates that the forest is dominated by Shorea robusta trees. Forest showed rich diversity as Shannon-Wiener’s index and Simpson’s index for trees was found to be 2.46 and 0.83 respectively.
The study was conducted on sub-tropical forest of districts Jammu and Samba of Jammu province of Jammu and Kashmir state, India with the objective of determining floristic composition, species diversity and structure of woody vegetation in drier Kandi Siwaliks. The forests of Kandi belt represent typical subtropical vegetation with distinct vertical zonation of three forest types i.e., Northern dry mixed deciduous forests (5B/C2), Himalayan subtropical scrub (9/C1/DSI) and Himalayan subtropical Pine forest (9/C1a) in an altitudinal range of 300 m asl to 990 m asl. The community analysis was performed using stratified random sampling involving 0.01 % of the total area for each community. Accordingly, 750 quadrats of 400 m2 and 100 m2 were laid for trees and shrubs respectively after attaining their species area curve. Various phytosociological parameters and diversity indices have been used to reveal the community structure, species richness, diversity and evenness for the phanerophytes in different forest types. A total of 112 species comprising 65 trees and 47 shrubs belonging to 92 genera and 48 families were recorded from the forest. The vegetation analysis revealed the dominance of Mallotus philippensis (SIV %, 6.4), Acacia modesta (10.44 %) and Pinus roxburghii (24.27%) as over storey elements in northern dry mixed deciduous forests, Himalayan subtropical scrub and Himalayan subtropical Pine forest respectively. The northern dry mixed deciduous forests occupying 27.3 % of the study area revealed maximum species richness and diversity as indicated by the higher values obtained for Shannon-Wienner’s index and Simpson’s index of dominance. Most of the forest landscapes are influenced by human disturbances and thus necessitates the need for immediate conservation action plan to ensure sustainable utilization and better management of forest.
Journal of Sustainable Forestry, 2016
An increased understanding of the importance of forest diversity for ecosystem services such as medicine, wood, climate control, etc., has lead to greater interest in the study of forests. This study aims to analyze the diversity, composition and distribution pattern of tree species in Pachamalai reserve forest in the Eastern Ghats of Tamil Nadu state. Data was collected in quadrant method, where 10 × 10m at different altitudes from 230 to 930m with 50m regular intervals were plotted. A total of 73 tree species belonging to 35 families with the density of 1372 individuals were enumerated from 3 hectare. Overall, the most dominant tree species A c c e p t e d M a n u s c r i p t 2 family was Fabaceae (21 species). The highest number in terms of density of tree species were observed for Pongamia pinnata and the most dominant on the basis of basal area was Tamarindus indica. The species inventory was calculated by Shannon-Weiner index (3.916), Simpson index (0.0206), and Margalef index (9.9667). With the increasing altitudinal gradient, species richness was observed maximum in the middle elevation zone from 580 to 780m. The results from the study could be helpful for monitoring and sustaining the forest resources is important to prevent loss of biodiversity and to mitigate climate change.
Asian Journal of Forestry
In the tropical evergreen forests of the southern slopes of Meghalaya, North East India, we examined the plant species diversity and community structure of woody plant species. The forests chosen for this study represent the area's primary vegetation. We counted a total number of 6016 individual trees belonging to 146 species, 95 genera, and 56 families from three 1-ha plots. The Shannon-Wiener Index (H') of the tree species in the three forest stands ranged from 3.74 to 3.95, the dominance of Simpson's index from 0.02 to 0.04, the evenness index from 0.68 to 0.83, and Margalef index range from 23.07 to 27.39. The density of woody species ranged from 1944 to 2100 trees ha-1 (mean 2005 ± 48.01). The dominant families based on Importance Value Index (IVI), number of species, genera and individuals were Fagaceae (IVI = 205.29, species= 11, genera= 4 and number of individuals= 1184), Lauraceae (IVI = 139.42, species= 22, genera= 9 and Individual= 882) and Euphorbiaceae (IVI = 68.39, species= 17, genera= 8 and Individual=478). Arecaceae represented by Arenga pinnata (Wurmb) Merr. and Caryota sp. and Pandanaceae, represented by Pandanus odoratissimus Blume, were the only monocot families, and Pinaceae, the sole gymnospermic family, represented by Pinus kesiya Royle ex Gordon. This study offers valuable knowledge about the species diversity and community structure of trees which is a prerequisite for efficient management and protection of the forests conserved by the local village communities primarily for ecosystem services.
Journal of Applied and Natural Science, 2015
Tree species diversity, distribution and population structure of tropical forests of Bharnawapara wildlife sanctuary was investigated. The study analyzed the structure of a tropical dry deciduous forest in Chhatisgarh at different sites i.e. closed natural forest, open natural forest and plantation forests of teak. The study was conducted by laying 30 quadrats, each 10 m × 10 m in size at different sites. In total, 246 trees belonging to 28 species of 17 families were recorded from 0.3 ha sampling area. Density ranged between 520 to 990 trees ha-1 subsequently, basal area ranged between 21.50 to 47.30 m2 ha-1. The dominant tree species was Cleistanthus collinus with an importance value index (IVI) of 57.70. Other important species were Terminalia tometosa (IVI 47.10), Lagerstroemia parviflora (36.92), Diospyros melanoxylon (28.42) and Madhuca indica(26.03). The Shannon-Wiener index (H′) ranged between 0.19 to 3.35 and Simpson’s index (C) between 0.12 to 0.95 indicating high tree spe...