Forests A forest is an area filled with trees which provides homes for many different living things. The forests found in Trinidad and Tobago are called Tropical Seasonal Forests because they are found near the Earth’s equator and have both wet and dry seasons. __________________________________________________________________________________________________________________ A forest is made up of different layers. The Emergent Layer is very sunny because it is at the very top and only the
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of soil as roots no longer hold soil together * Less take-up of water by plant roots * Less interception of rain fall by vegetation cover Positive impact of flooding in Ganges/Brahmaputra river basin Regular annual flooding is essential to people who live on the flood plain of these rivers‚ the farming season is planned around the floods‚ rice is a main crop and requires large quantities of water. Also‚ when the river floods it leaves behind fertile silt. write about how soils‚ vegetation
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Able to grow in poor soil conditions (less fertile and more acidic soil)- enables commercial woodland to be sited in areas not particularly suitable for intensive agriculture. disadvantages The high density of softwood forest planting decreases diversity. Hard wood forest Advantages Indigenous hardwood forests‚ eg ash and oak provides greater variety of habitats and increased biodiversity compared to introduced larch and spruce. Decomposition of leaves provide soil with nutrients disadvantages
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Prevents Soil Erosion The soil is protected by vegetation in various ways; I) The leaves and the branches of trees break the force of rain‚ therefore reducing the breaking up of soil. II) The roots facilitate rainwater to soak in the soil. So as the water percolates underground there is a decrease in run-off. III) The roots hold the soil tightly preventing it from being washed away. c) Prevents Flooding Since the roots allow the water to penetrate into the soil‚ it
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SWEET POTATO (IPOMOEA BATATAS) AS SOIL ENHANCER Submitted by: Submitted to: Sean Rogers N. Reyes Mr. Andrew Tenorio Kyle Martin A. Villagen Karl Harvie D. Villoso Contents Idea: Sweet Potato Peelings as Soil Enhancers 3 Chapter 1- Introduction 3 Background of the Study: 3 Statement of the problem: 3 Specific: 3 Statement of the hypotheses: 3 Main: 3 Specific: 3 Significance of the Study: 4 Scope
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foundation it is ’shallow’. Shallow foundations (sometimes called ’spread footings’) include pads (’isolated footings’)‚ strip footings and rafts. Shallows foundations are used when surface soils are sufficiently strong and stiff to support the imposed loads; they are generally unsuitable in weak or highly compressible soils‚ such as poorly-compacted fill‚ peat‚ recent lacustrine and alluvial deposits‚ etc. Pad foundations Pad foundations are used to support an individual point load such as that due to
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trip Noel introduced us to the no dig system‚ which is environment friendly. Essentially‚ a no-dig garden comprises layers of varying organic matter piled up. This allows the entire area to be accessed without walking on the garden‚ thus preventing soil compaction‚ which is detrimental to worm activity and healthy plant growth. The layers of a no-dig garden are similar to those of an efficient‚ fast-working compost heap. Using such a varied range of organic materials creates high nutrient levels and
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trees are moved From the forested areas. Uses of fertilizers to maintain soil Soil fertility humus is also a natural Way of replenishing the of the richness Soil. Crop rotation should replace mono-cropping. As the name implies this is a system of farming whereby different crops are planted on the same piece of land in succession. This benefits the land since different plants use different nutrients from the soil. Pastures should be subdivided to allow for rotation of grazing. Ploughing
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Facsimile: 412-221-3127 Soil Improvement Technologies for Tunnelling: Selected Case Histories by G. Pellegrino Nicholson Construction Company‚ Cuddy‚ Pennsylvania Presented at: ASCE Met Section Spring 1999 Geotechnical Seminar State-of-the-Art Technology in Earth and Rock Tunnelling New York‚ NY May 26-27‚ 1999 99-02-128 SOIL IMPROVEMENT TECHNOLOGIES FOR TUNNELLING: SELECTED CASE HISTORIES Guido Pellegrino Nicholson Construction Company ABSTRACT Soil improvement technologies
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medium supplemented with IBA (0.1 mg/l). Laccaria laccata was multiplied using Modified Melin Norkrans (MMN) medium and inoculated into rooted plantlets in vermiculite having MMN/ MS medium or in soil under in-vitro conditions. Plantlets died within 1 and 2 months of inoculation in vermiculite and soil respectively. This may be attributed to the ready availability of nitrogen and phosphorus in MMN and MS media and more competency
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