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Manhas, R. K.
- Effect of Lantana camara Linn. on Biomass Production and Carrying Capacity of forest Areas of Shiwalik Hills of Punjab
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Indian Forester, Vol 135, No 7 (2009), Pagination: 869-879Abstract
Experiments were conducted to control Lantana camara in Shiwalik hills of Punjab through chemical treatment (Glyphostate 1.0% spray at stump level) and by planting four fastgrowing species viz.Dendrocalamus strictus, Leucaena leucocephala, Albizia procera (White siris) and Melia azedarach (Drek) after stubbing Lantana at Patahankot, Hoshiarpur and Ropar. Under these five treatments effect of Lantana on biomass production of palatable and non-palatable species and carrying capacity of sites was studied. Biomass studies show that contribution of non-palatable species in control and chemical treatments was very high ranging between 71.80% to 98.84%. Total biomass of palatable and non-palatable species was also found to be very high in all the control treatments mainly due to the dominance of L. Camara. However, dominance of L. camara was found to be low in Bamboo, Leucaena, Whitesiris and Drek treatments. Though L. camara was negatively correlated with H' (Shannon- Wiener's Index) of non-palatable species, it significantly affected H' of palatable species under four treatments of fast-growing species except bamboo treatment. Cd (Simpson's Index) was observed inversely related to H' in all treatments. Correlation analysis showed significant relationship between biomass and H', which meant that with the increase of diversity, biomass of palatable species also increased significantly. The values of carrying capacity showed that the chemical and control treatments had 'very poor' (<1.07 cows ha-1) and other treatments had 'poor' (<3.89 cows ha-1) carrying capacity. The study suggests that plantations of fast growing species hinder the growth of Lantana camara and help to increase the biomass of palatable species thereby upgrading the carrying capacity of the forests though marginally within a short period 2-3 years.Keywords
Lantana camara, Carrying Capacity, Biomass Production, Shiwalik Hills, Punjab
- Effect of Soil Moisture on Demographic Dispersion, Species Association and Diversity of Primary Producers in a Sub-tropical Swamp Forest
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Indian Forester, Vol 133, No 4 (2007), Pagination: 547-560Abstract
The present study was conducted in five communities of a sub-tropical swamp forest of Doon Valley, India. The aim of the present paper is to study the various changes in the community structure as a result of change in seasons and soil moisture regime. In moist communities local species were dominant and as the soil moisture (%) lessened their dominance decreased. Importance Value Index (IVI) of all dominant species of the swamp varied significantly during the study period, indicating that they are noticeably affected by the changes in the moisture regime of the swamp. Various indices of association were calculated to find out species association and the results of these indices shows that all the local species were closely associated. Species richness, Shannon- Wiener diversity index (H'), concentration of dominance (Cd) and beta diversity (β) of the five communities were also calculated. Pearson's correlation was used to find out relationship between soil moisture (%) and diversity indices. The results of the correlation analysis reveal that soil moisture (%) was negatively correlated with species richness and H' and positively related with Cd and β diversity.- Estimation of Carbon Content in Some Forest Tree Species
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Indian Forester, Vol 129, No 7 (2003), Pagination: 918-922Abstract
A study was carried out in the Forest Research Institute Campus, Dehra Dun to estimate the carbon content of some of the important tree species to have an idea about the responses of these species to the changing climate. The conclusive outputs of this paper are, (i) Pinus roxburghii is storing maximum amount of carbon followed by Pterospermum acerifoIium, Syzygium cumini etc.; (ii) the carbon storing efficiency of some species like P. roxburghii, Shorea robusta etc. is decreasing with increasing concentration of CO2, This may be due to the fact that biota is currently releasing additional carbon to the atmosphere rather than storing carbon. This new hypothesis, against our general hypothesis that with increasing atmospheric carbon the efficiency of storing carbon will also increase, is a preliminary study and needs much more studies and experiments.- Dominance, Diversity and Regeneration Status of a Moist Sub-tropical Shorea robusta Gaertn. f. (Sal) Forest of Doon Valley, India
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Indian Forester, Vol 136, No 4 (2010), Pagination: 544-552Abstract
Dominance, diversity and regeneration status of a moist sub-tropical sal forest in Doon valley was investigated. The results of the study reveal that S. robusta, Ardesia solanacea and Oplismenus compositus were the most dominant species in tree, shrub and herb layers respectively. Shrub layer was the most diverse strata, closely followed by the herb strata. Forest of Asarori are becoming more diverse and heterogeneous. Regeneration studies exhibited reverse 'J' shaped curve for sal, which signifies good regeneration. But low conversion rate of seedlings to saplings requires proper management.Keywords
Diversity, Regeneration States, Shorea robusta, Ardesia solanacea, Oplismenus compositus, Doon Valley- Changes in the Scenario of Dominance and Diversity in Shorea robusta Gaertn. F. (Sal) Forests of Lachchhiwala, Doon Valley, India
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Indian Forester, Vol 132, No 12 (2006), Pagination: 1645-1652Abstract
Changes in an ecosystem are inevitable. Recording of these changes can prove to be fruitful for the management of forests, particularly the moist Sal forest. Present study was carried out in Sal Forests of Lachchhiwala, a famous pcinic spot, to assess the changes in dominanace and diversity of plant species since 1987. After critically analyzing the results it was found that Sal is still the most dominant tree species. In shrub and herb layers the species richness has increased significantly and so is the species diversity. It was also found that homogeneous Sal forests, managed as monocultures, are slowly but steady becoming heterogeneous.- Growth Performance of Macroproliferated Plants of Gentiana kurroo and Cyrtomium caryotideum at Two Different Sites
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Indian Forester, Vol 138, No 11 (2012), Pagination: 1063-1065Abstract
No Abstract- Biomass Accumulation and Carbon Storage in Six-Year-Old Citrus reticulata Blanco.Plantation
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Affiliations
1 College of Horticulture and Forestry (Agriculture University, Kota), Jhalawar Rajasthan-326 001, IN
2 Department of Botany, Govt. Degree College, Kathua–184104, Jammu and Kashmir, IN
1 College of Horticulture and Forestry (Agriculture University, Kota), Jhalawar Rajasthan-326 001, IN
2 Department of Botany, Govt. Degree College, Kathua–184104, Jammu and Kashmir, IN
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Indian Forester, Vol 142, No 6 (2016), Pagination: 563-568Abstract
The potential of fruit trees to sequester carbon and thereby provide an environmental service remains unexploited. Although not fully understood, CO2 fixation in fruit orchards is probably higher in comparison to fixation in annual herbaceous crops. The present study was conducted in Jhalawar district of Rajasthan State, western India. A total of 7 trees were harvested to assess the biomass and carbon content in various parts of Citrus reticulata, and derive the allometric biomass equation for future research. The mean aboveground biomass was 10.05±0.03 Kg tree-1. The average aboveground allocation of biomass was nearly 76% and belowground biomass was 24%. The maximum carbon was stored by fruit biomass (2.10 Kg tree-1) followed by ischolar_mains (1.42 Kg tree-1) and branches (1.11 Kg tree-1). Total carbon stored by 6 yr old C. reticulata plantation was 5.94 Kg tree-1 and 1.65 t C ha-1. A total of four biomass models were studied for developing a reliable equation for biomass estimation. All four models were found to be statistically significant (Ftest, P < 0.01) for all the aboveground and belowground plant parts, along with total biomass. Models with diameter as the only independent variable had less bias percentage (bias%) and percentage ischolar_main mean square error (RMSE%) values than the models with diameter and height as the independent variables.Keywords
Biomass, Biomass Model, Carbon Content, Nagpur Mandarin, RMSE%.References
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- Parasitism of Orobanche alba on Thymus serpyllum: A New Report from India
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Affiliations
1 Department of Botany, Govt. Degree College for Women, Udhampur (J&K), IN
2 Department of Botany, Govt. Degree College, Kathua (J&K), IN
3 Department of Botany, University of Jammu, Jammu (J&K), IN
1 Department of Botany, Govt. Degree College for Women, Udhampur (J&K), IN
2 Department of Botany, Govt. Degree College, Kathua (J&K), IN
3 Department of Botany, University of Jammu, Jammu (J&K), IN
Source
Indian Forester, Vol 142, No 7 (2016), Pagination: 704-705Abstract
No Abstract.References
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