Quantitative analysis of tree species in two community forests of Dolpa district, mid-west Nepal

Two community forests, Amaldapani and Juphal from Dolpa district, were selected for a study of quantitative analysis of tree flora. A total of 419 individual trees representing 16 species, 16 genera and 11 families were recorded. Total stand density and basal area were, respectively, 2100 trees ha-1 and 90 m2ha-1 in Amaldapani and 2090 tree ha-1 and 152 m2ha-1 in Juphal. Of the families, the Pinaceae was the most diverse, with 28 individuals representing five species and five genera, followed by the Rosaceae with three individuals representing two species and two genera. Pinus wallichiana, Abies spectabilis, Quercus semecarpifolia and Cedrus deodara had the highest importance value index and could therefore be considered the dominant species. Since the study area was diverse in tree population of conifers and deciduous forest tree species, it is essential to carry out further studies in order to establish conservation measures that will enhance local biodiversity. Key words: Vegetation, tree species, Pinus wallichiana, community forest, Dolpa Himalayan Journal of Sciences 2(3): 23-28, 2004

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Tree diversity and natural regeneration in Tropical Dry Deciduous Forest of Panna Tiger Reserve, India

10.21203/rs.3.rs-629351/v1 ◽

2021 ◽

Author(s):

Talat Parveen ◽

Orus Ilyas

Keyword(s):

Species Diversity ◽

Tree Species ◽

Deciduous Forest ◽

Basal Area ◽

Stand Density ◽

Tectona Grandis ◽

Aegle Marmelos ◽

Tree Stand ◽

Tiger Reserve ◽

Dry Deciduous Forest

Abstract The disturbance is a major factor driving the decline of tropical forests and their associated fauna. Henceforth, basic information on species diversity would be useful for assessing the success of management in the fragmented and human-disturbed landscape. We accounted for tree species diversity and their regeneration pattern from the tropical dry deciduous forest of Panna Tiger Reserve (PTR), India. Considering this, random vegetation sampling along with transects was carried out in different ranges of PTR. It is spread over in an area of 2998.98 km2 that situated in the northern part of Madhya Pradesh and distributed in Panna and Chhatarpur district. The tropical dry deciduous forest inventory in the 10.6132-ha area yielded a total of 46 woody species of > 10 cm GBH, belonged to 23 Families and 40 genera. The regeneration represented 27 species of < 30 cm height (seedling) under 16 families and 24 genera while sapling, which ranges from > 30cm to 1.3m, showed 24 species of 13 families and 32 genera. The Shannon diversity of Trees, seedlings, and saplings was 2.684, 2.525, and 2.401 respectively. A total stand density and basal area of 2391 stems of trees were estimated as 225.285 stand ha− 1 and 90.016 m2ha− 1 respectively. Tectona grandis scored the highest IVI value of 59.44 (19.81% of total IVI for all species) among the dominated tree species, followed by Acacia catechu (24.94), Abrus precatorius (23.25), Zizyphus xylopyra (22.94), Anogeissus latifolia (22.16) and Lagerstroemia parviflora (22.18). Nearly 23.913% of the total number of species was recorded as rare species. The highest seedling density was obtained for Diospyros melanoxylon followed by Zizyphus xylopyra, Aegle marmelos, Wrightia tintoria, and Tectona grandis, which declined in the subsequent sapling stage and showed a reverse pattern. Hence, the highest sapling density was recorded for Tectona grandis then Aegle marmelos, Wrightia tintoria, Diospyros melanoxylon, and Zizyphus xylopyra. A total of 36.956% of tree species were found to fail to establish in the community because species were represented by only adult or tree stage that listed as Not-regenerating. In terms of the most diverse family among the plant categories; viz. Tree, Seedling, Sapling, Fabaceae had the highest species richness. The highest tree stand density (127.576 stand ha− 1) was recorded in the girth class of 31-60cm (48.687% of the total tree stand density) followed by 10-30cm and 61-90cm. Likewise, a total basal area of 20.824 m2ha− 1 was occupied by 31-60cm that contributed 23.051% of the total basal area, so our data on the population structure of forest shows a similar trend wherein the distribution curve exponentially decreases with increasing girth classes that indicates not only a mid-successional forest but also a human-disturbed.

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Phytosociological observations on tree species diversity of an urban tropical dry deciduous forest of central India

Advances in Forestry Science ◽

10.34062/afs.v7i3.10252 ◽

2020 ◽

Vol 7 (3) ◽

pp. 1029-1138

Author(s):

Dharmendra Dugaya ◽

PV Kiran ◽

Rajnish Kumar Singh ◽

Manmeet Kaur ◽

Pradeep Chaudhry

Keyword(s):

Tree Species ◽

Deciduous Forest ◽

Forest Type ◽

Basal Area ◽

Central India ◽

Capital City ◽

Stem Density ◽

Importance Value Index ◽

Tree Community ◽

Dry Deciduous Forest

We analyzed phytosociological characteristics of a tropical dry deciduous forest located in an urban environment of Indian Institute of Forest Management (IIFM) Campus in the capital city of Bhopal of Madhya Pradesh state, Central India. A Comparison has been made among the tree community characteristics during the years 1988, 2002 and 2020 in terms of tree species composition, stem density, basal area and Importance Value Index (IVI). At the time of establishment of the institute in 1988, the forest area resembleda degraded dry scrubland. Due to continuous care/protection, plantation activities, degraded forest recovered remarkably, ecological processes evolved favorably with canopy cover reaching over 60% in some patches and about 50% in general over most part of the campus. During last two decades, tree density increased from 319 to 525 stem ha-1 indicating an increase of 64% whereas basal area increased from 18470.79 cm2 ha-1 to 29782.31 cm2 ha-1,an increase of about 61%. Leguminaceae family represented 26.4% of the tree community followed by Combretaceae (11.76%). Shannon-Weiner index (1.31), Simpson index (0.93) and evenness index (0.85) are within the reported ranges for similar forest type of dry deciduous nature in India. Theresults of the presentstudy will help forest managers in conservation planning of urban tropical forest ecosystem of central India.

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Study Of Plant Regeneration Potential In Tropical Moist Deciduous Forest In Northern India

International Journal of Environment ◽

10.3126/ije.v2i1.9218 ◽

2013 ◽

Vol 2 (1) ◽

pp. 153-163 ◽

Cited By ~ 3

Author(s):

Ashish K Mishra ◽

Omesh Bajpai ◽

Nayan Sahu ◽

Anoop Kumar ◽

Soumit K Behera ◽

...

Keyword(s):

Plant Species ◽

Tree Species ◽

Population Distribution ◽

Deciduous Forest ◽

Importance Value Index ◽

Importance Value ◽

Regeneration Potential ◽

Northern India ◽

Regeneration Status ◽

Tree Sapling

Regeneration patterns of species population can address climate change by adaptive evolution or by migrating association to survive in their favorable climate and finally decided to particular forest future. In this paper we examined the status of regeneration potential of tree species in tropical moist deciduous forest at Katerniaghat Wildlife Sanctuary, Northern India. To investigate tree, sapling and seedling population distribution, we examine regeneration status in 145 random plots in study area. Total 74 plant species of 60 genera belonging to 32 families out of which 71 species of trees, 56 of seedlings and 60 of saplings were found in the forest. On the basis of importance value index Mallotus philippensis, Tectona grandis, Shorea robusta, Syzygium cumini and Bombax ceiba have been found as dominant species in the study area. As far as the regeneration status is concerned, the maximum tree species (64%) have been found in good regeneration category. Significant variations in species richness and population density, between three life form (i. e. tree, sapling and seedling) have been found. In which only three new tree species Prosopis juliflora, Psidium guajava and Morus alba were added in sapling and seedling stage. It is major ecological concern that about 19 % economically important plant species like Madhuca longifolia, Terminalia elliptica, Buchanania cochinchinensis, some Ficus species etc. have been found in poor regeneration phage, whereas about 7% species found in no regeneration categories. International Journal of Environment, Volume-2, Issue-1, Sep-Nov 2013, Pages 153-163 DOI: http://dx.doi.org/10.3126/ije.v2i1.9218

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Ecological exploration of Kuwana forest: A tropical moist deciduous forest of eastern Terai, India

Annals of Plant Sciences ◽

10.21746/aps.2017.6.12.2 ◽

2017 ◽

Vol 6 (12) ◽

pp. 1811 ◽

Cited By ~ 1

Author(s):

Omesh Bajpai ◽

Shraddha Suman ◽

Nirmala Upadhyay

Keyword(s):

Tree Species ◽

Deciduous Forest ◽

Uttar Pradesh ◽

Principal Component ◽

Diversity Indices ◽

Tree Diversity ◽

Forest Community ◽

Importance Value Index ◽

Importance Value ◽

Lowland Forest

The present study was conducted in the Kuwana forest of Gonda forest division in Uttar Pradesh to explore its ecological inventories. Random stratified sampling was adopted to collect the basic information like frequency, density and abundance for the calculation of importance value index (IVI). On the basis of principal component analysis (PCA) plot, three forest communities were identified and named as, Syzygium Lowland Forest (SLF), Shorea Miscellaneous Forest (SMF) and Mallotus Miscellaneous Forest (MMF). MMF community allowed the maximum 39 while SLF minimum 18 tree species growing in it. Conversely, SMF community showed higher heterogeneous tree diversity validated by lower Dominance index (0.088) and higher Simpson index (0.912). The values of these two indices were found very low in comparison with their range for tropical forests of India. On the otherhand the diversity indices (Shannon & Fisher alpha) was calculated as maximum (2.797 & 11.960 respectively) for MMF community, which indicates the existence of better tree diversity in this forest community. The higher values of Evenness & Equitability indices (0.646 & 0.859 respectively) for SMF community showed the more evenly distribution of tree species in this community.

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Vegetation Analysis in Community Forests of Terai Region, Nepal

International Journal of Environment ◽

10.3126/ije.v8i3.26667 ◽

2019 ◽

Vol 8 (3) ◽

pp. 68-82

Author(s):

Rajeev Joshi ◽

Ramesh Chhetri ◽

Karan Yadav

Keyword(s):

Tree Species ◽

Diversity Index ◽

Systematic Sampling ◽

Vegetation Analysis ◽

Importance Value Index ◽

Importance Value ◽

Community Forests ◽

Shorea Robusta ◽

Wiener Diversity Index ◽

Individual Trees

This paper deals with the study of vegetation analysis of tree species in Ganesh and Ramnagar community forests (CF) of the Terai region. For the study, altogether 63 concentric sample plots (each plot of 500 m2) were laid using systematic sampling with a sampling intensity of 0.5%. A total of 967 individual trees representing 16 different tree species were identified. Both CF was dominated by monospecies such as Mallotus philippensis (Ganesh CF) and Shorea robusta (Ramnagar CF) based on the Importance Value Index (I.V.I). Likewise, the Shannon-Wiener diversity index was higher in Ganesh CF whereas the dominance index was low. Similarly, the index of evenness and richness was also slightly higher in Ganesh CF than Ramnagar CF. The study provided information about the structure, composition, and dominance of tree species which is essential for conservation and sustainable management of community forests. Therefore, this article serves as an example of establishing community forests so as to initiate the conservation and preservation of local biodiversity.

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Assessment of tree diversity in distinctive deciduous forests of Suruli falls, Southern Western Ghats

Journal of Applied and Natural Science ◽

10.31018/jans.v10i4.1879 ◽

2018 ◽

Vol 10 (4) ◽

pp. 1085-1093

Author(s):

J Naveenkumar ◽

Somaiah Sundarapandian

Keyword(s):

Species Richness ◽

Western Ghats ◽

Deciduous Forest ◽

Basal Area ◽

Deciduous Forests ◽

Stem Density ◽

Diameter Class ◽

Importance Value Index ◽

Importance Value ◽

Southern Western Ghats

A quantitative inventory was conducted in two distinctive tropical deciduous forests at Suruli falls forest of southern Western Ghats. Two one-hectare plots were established and all trees >10cm DBH measured. Species richness, density, family importance value (FIV) and importance value index (IVI) were calculated and the results varied among the two sites. A total of 777 stems and 52 species were documented in both the sites and moist deciduous forest (MDF) had maximum number species richness and density than dry deciduous forest (DDF). The basal area was higher in MDF (502 stems/ha and 16.52 m2/ha) than in DDF (275 stems/ha and 7.23 m2/ha). However, Shannon and evenness indices showed a negative trend (DDF- 2.62, 0.41 and MDF- 2.37, 0.27). Diameter class-wise distribution of trees showed reverse ‘J shaped’ curve in both the forest types. Pterocarpus marsupium was the mono-dominant species holding one-third of the IVI (113), 27% of the stem density and 30% of the total basal area. DDF site is suspected to recurrence of annual fire. Anogeissus latifolia and Strychnos potatorum were the fire-tolerant species only found in lower diameter class. The maximum species shared contiguous distribution in the deciduous forests. The observed variations in the tree community between the two deciduous forest sites are possibly due to variations in altitude, rainfall, temperature, past disturbance, fire and edaphic characteristics.

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Assessment of tree diversity in tropical moist deciduous forest of Mizoram University, Northeast India

Journal of Applied and Natural Science ◽

10.31018/jans.v13i1.2436 ◽

2021 ◽

Vol 13 (1) ◽

pp. 95-100

Author(s):

Wapongnungsang ◽

Etsoshan Y Ovung ◽

SK Tripathi

Keyword(s):

Tree Species ◽

Deciduous Forest ◽

Diversity Index ◽

Wild Food ◽

University Campus ◽

Importance Value Index ◽

Importance Value ◽

Mature Trees ◽

Important Species ◽

Balance Of Nature

Forests are the main repository of biodiversity and play an important role in maintaining the ecological balance of nature. The status of species diversity reflects the health of the ecosystem. Therefore, the information on variation in the flora, for example, species composition, diversity and the basal area within any ecosystem like the forest of Mizoram University campus, Tanhril village, Aizawl would be important in understanding the forest wealth of the campus. Keeping in view, the study was analyzed the composition and diversity of Mizoram University campus by laying 16 (10 m ×10 m) quadrats at random locations during 2015-2016. A total of 35 tree species belonging to 30 genera and 22 families were recorded in the forest communities of University Campus. Aporusa octandra was the most dominant tree species with maximum 31.50 importance value index (IVI), 3.29 Shannon diversity index (H0) and 6972 Simpson’s index (D) followed by Castanopsis tribuloides (28 IVI, 0.22 H0 and 5256 D) and least dominant species recorded were: Albizia odoratissima, Anogeissus acuminate, Lithocarpus elegans, Oroxylum indicum. This study suggests that the forest patches are recovering after the establishment of the University because of adequate protection which was degraded in the past by the villager for collecting the trees for firewood, edible wild food and selecting the mature trees for felling. Therefore, further studies on regeneration potential of tree species would be crucial for the conservation of ecologically important species and to assess rates of their recovery following the disturbance.

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VEGETASI POHON DAN PERSEBARANNYA DI TAMAN WISATA ALAM GUNUNG TUNAK DAN HUTAN KERAMAT, MANDALIKA, LOMBOK TENGAH, PROVINSI NUSA TENGGARA BARAT

BERITA BIOLOGI ◽

10.14203/beritabiologi.v19i2.3867 ◽

2020 ◽

Vol 19 (2) ◽

Author(s):

Muhammad Mansur

Keyword(s):

Tree Species ◽

Co2 Sequestration ◽

Carbon Stock ◽

Diversity Index ◽

Similarity Index ◽

Basal Area ◽

Importance Value Index ◽

Importance Value ◽

Trunk Diameter ◽

Plot Area

The study was conducted on March 2018 in two locations study, i.e. Mount Tunak Nature Tourism Park (NTP) (6400 m2 plot area) and Keramat Forest (4800 m2 plot area), Central Lombok District, West Nusa Tenggara Province. The objective of the study was to find out the diversity of tree species and its distribution which can be used for forest area management by the local government and can support the establishment of a Special Economic Region in Mandalika as a place for conservation, research, education and scientific tourism. In the total plot of 1.12 hectare, we recorded 1560 individuals, representing 56 species, 47 genera and 19 families. All stems ≥ 5 cm in diameter were measured and identified. In the plot of Mt. Tunak NTP, we recorded 992 individuals, representing 41 species, basal area was 11.4 m2, 31.7 m3of estimated bole volume, 78.3 tons biomass, 39.2 tons carbon stock and 143.7 tons CO2 sequestration. Five dominant tree species (trunk diameter ≥ 5 cm) recorded with the highest Importance Value Index (IVI) were Aglaia argentea (IVI= 34.3%), Schoutenia ovata (IVI= 33.3%), Drypetes neglecta (IVI= 25.4%), Glycosmis pentaphylla (IVI= 16.4%) and Grewia koordersiana (IVI= 14.9%). The level of diversity of tree species in the Mt. Tunak NTP was classified into a midle level with a Diversity Index (H')= 3.3, while in the Keramat Forest we recorded 568 individuals, representing 37 species, basal area was 19.9 m2, 51.1 m3 of estimated bole volume, 149.8 tons biomass, 74.9 tons carbon stock and 274.9 tons CO2 sequestration. Five dominant tree species were recorded; Dalbergia latifolia (IVI= 69.4%), Grewia koordersiana (IVI= 34.5%), Schoutenia ovata (IVI= 34.3%), Cupaniopsis macropetala (IVI= 18.2%) and Rhus succedanea (IVI= 14.2%). The level of diversity recorded (H')= 2.9 and classified as midle level. The composition of vegetation in Mt.Tunak NTP and Keramat Forest is different (Jaccard Similarity Index was 39.3%).

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Floristic Variation of Tree Communities and Their Association with Soil Properties in Pulau Jerejak, Penang, Peninsular Malaysia

Science Letters ◽

10.24191/sl.v14i1.7899 ◽

2020 ◽

Vol 14 (1) ◽

pp. 34

Author(s):

Faezah Pardi

Keyword(s):

Tree Species ◽

Diversity Index ◽

Basal Area ◽

Peninsular Malaysia ◽

Importance Value ◽

Conservation Action ◽

Endangered Tree ◽

Endangered Tree Species ◽

Tree Communities ◽

Floristic Variation

This study was conducted at Pulau Jerejak, Penang to determine the floristic variation of its tree communities. A 0.5-hectare study plot was established and divided into 11 subplots. A total of 587 trees with diameter at breast height (DBH) of 5 cm and above were measured, identified and recorded. The tree communities comprised of 84 species, 63 genera and 32 families. The Myrtaceae was the most speciose family with 10 recorded species while Syzgium glaucum (Myrtaceae) was the most frequent species. The Myrtaceae recorded the highest density of 306 individuals while Syzgium glaucum (Myrtaceae) had the highest species density of 182 individuals. Total tree basal area (BA) was 21.47 m2/ha and family with the highest BA was Myrtaceae with 5.81 m2/ha while at species level, Syzgium glaucum (Myrtaceae) was the species with the highest total BA in the plot with value of 4.95 m2/ha. The Shannon˗Weiner Diversity Index of tree communities showed a value of 3.60 (H'max = 4.43) and Evenness Index of 0.81 which indicates high uniformity of tree species. The Margalef Richness Index (R') revealed that the tree species richness was 13.02. Myrtaceae had the highest Importance Value of 20.4%. The Canonical Correspondence Analysis (CCA) showed that Diospyros buxifolia (Ebenaceae) and Pouteria malaccensis (Sapotaceae) were strongly correlated to low pH. Dysoxylum cauliflorum (Meliaceae) and Eriobotrya bengalensis (Rosaceae) were correlated to phosphorus (P) and calcium ion (Ca2+), respectively. Therefore, the trees species composition at Pulau Jerejak showed that the biodiversity is high and conservation action should be implemented to protect endangered tree species. Keywords: Floristic variation; Tree communities; Trees composition; Pulau Jerejak; Species diversity

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Forest Structure, Composition and Above Ground Biomass of Tree Community in Tropical Dry Forests of Eastern Ghats, India

Notulae Scientia Biologicae ◽

10.15835/nsb819746 ◽

2016 ◽

Vol 8 (1) ◽

pp. 125-133 ◽

Cited By ~ 8

Author(s):

Sudam Charan SAHU ◽

H.S. SURESH ◽

N.H. RAVINDRANATH

Keyword(s):

Forest Structure ◽

Tree Species ◽

Basal Area ◽

Eastern Ghats ◽

Tropical Dry Forests ◽

Above Ground Biomass ◽

Importance Value ◽

Shorea Robusta ◽

Ground Biomass ◽

C Stocks

The study of biomass, structure and composition of tropical forests implies also the investigation of forest productivity, protection of biodiversity and removal of CO2 from the atmosphere via C-stocks. The hereby study aimed at understanding the forest structure, composition and above ground biomass (AGB) of tropical dry deciduous forests of Eastern Ghats, India, where as a total of 128 sample plots (20 x 20 meters) were laid. The study showed the presence of 71 tree species belonging to 57 genera and 30 families. Dominant tree species was Shorea robusta with an importance value index (IVI) of 40.72, while Combretaceae had the highest family importance value (FIV) of 39.01. Mean stand density was 479 trees ha-1 and a basal area of 15.20 m2 ha-1. Shannon’s diversity index was 2.01 ± 0.22 and Simpson’s index was 0.85 ± 0.03. About 54% individuals were in the size between 10 and 20 cm DBH, indicating growing forests. Mean above ground biomass value was 98.87 ± 68.8 Mg ha-1. Some of the dominant species that contributed to above ground biomass were Shorea robusta (17.2%), Madhuca indica (7.9%), Mangifera indica (6.9%), Terminalia alata (6.9%) and Diospyros melanoxylon (4.4%), warranting extra efforts for their conservation. The results suggested that C-stocks of tropical dry forests can be enhanced by in-situ conserving the high C-density species and also by selecting these species for afforestation and stand improvement programs. Correlations were computed to understand the relationship between above ground biomass, diversity indices, density and basal area, which may be helpful for implementation of REDD+ (reduce emissions from deforestation and forest degradation, and foster conservation, sustainable management of forests and enhancement of forest carbon stocks) scheme.

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