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Effect of deforestation on the earth
Harmful effects of deforestation
Importance of deforestation to humans
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Recommended: Effect of deforestation on the earth
Example of the Scientific Method
Observation:
In one of the major regions of deforestation, the province of Rhondonia, Brazil, the rainfall has been severely and or completely stopped.
Theory:
As the tropical rainforest of Rhondonia, Brazil is leveled for farmland, rainfall is significantly and directly reduced. Rainfall is reduced because there are fewer trees to return water vapor to the air through tree transpiration, or water evaporation through trees. Relative humidity is the amount of water vapor in the air compared with the amount of vapor needed to make the air saturated at the air's current temperature. The point past saturation is precipitation, or rainfall. If deforestation is the cause of decreased rainfall, then decreased average relative humidity will be evident.
Experimental Design:
In order, to isolate deforestation as the primary factor causing decreased rainfall, tests will be conducted to measure relative humidity. A sling psychrometer will be used to gain these measurements.
http://www.taftan.com/thermodynamics/HYGROMT.HTM
It is used to measure the amount of moisture in the air. The dry-bulb thermometer measures the air temperature, and the wet-bulb measures the lowest temperature that can be obtained by evaporating water into the air at constant pressure. A calculator will be used to convert to relative humidity.
http://www.srh.noaa.gov/elp/wxcalc/rh.html
El Paso National Weather Service Office's weather calculator
This converter will take the wet-bulb temperature, the air temperature and the current uncorrected pressure and calculates the relative humidity and dewpoint.
Please enter your air temperature and then choose either Fahrenheit or Celsius.
Fahrenheit Celsius
Please enter your wet-bulb temperature and then choose either Fahrenheit or Celsius.
Fahrenheit Celsius
Please enter your actual station pressure (not sea level pressure) and then choose either millibars or inches of Mercury.
Millibars Inches of Mercury
Relative humidity measurements will be taken every day for one year. The measurements will be taken at different stations in the rainforest. Four stations will be located no further than 10 miles from current areas of deforestation. Four other stations will be located at the interior of the rainforest, and at least 50 miles from recent deforestation. After these measurements are taken, they will be analyzed in three different ways.
Run Experiment:
The daily measurements were tracked for one year.
Comparison 1 - The recent relative humidity measurements of the rainforest will be compared to previous figures of relative humidity.
9. Repeat step #8. Using a pipet, add small amounts of boiling water from the hot plate to the water bath and collect pressure and temperature data. For each new temperature, record the air pressure and vapor pressure. Continue until you have gathered 6 measurements that range from room temperature to 40 °C.
We must first begin the today’s lab by connecting the thermometer that digitally detects surrounding temperature to the Lab Pro Interface located on the computer via...
Following a brief introduction of the history of the development of Brazil, I have broken the paper into five sections; each section is dedicated to one of the five main contributing factors of deforestation. The five main contributors are cattle ranching, farming, logging, infrastructure development, and weaknesses in the government. In each section I will discuss how each factor effects the environment and Brazil at large.
The effect of water quality on Vegetative measurements and photosynthesis indices of the trees are presented in Table 1. No significant differences were found between parameters: gs, shoot number in both years, but others were higher in RW application. Height of trees and leaf area in first year was not significant but in second year it increased by 42 and 29% respectively in application RW. Photosynthesis rate appears significantly higher (23.4 µmol m−2 s−1) in plants receiving recycle water than clean water.
Brazil, a country of natural resources running everywhere needing saving, destroyed everyday by humankind. with 2/3’s of the Amazon forest home in brazil, we must keep an eye on how it is being sustained, what is being done to keep it safe and when we believe we will be able to not only stop deforestation, but grow back the earth’s creatures natural habitats. The sheer beauty of our world is worth trying to help our ecosystem and helping the environment and ensuring its sustainability.
The introduction of cattle ranching industries in the 1960s set the forefront for current Brazilian rainforest deforestation figures. During this time, development subsidy programs encouraged Brazilians to clear rainforest for pastureland and invest in new cattle ranches (Pancheco). Over the last 40 years, Brazil has destroyed 700,00 square kilometers of rainforest, an area about the size of Texas (BBC) (Enchanted Lear...
One example of the hydrologic cycle is of the rainforest in the Republic of Pan...
Philip, M., & William F. 2004, ‘Tropical Deforestation and Greenhouse-gas Emissions’, Ecological Applications, (no publication information), Volume 14, Issue 4, pp. 982–986, viewed 23 April 2010,
Therefore, a large amount of trees were cut down and led to forest destruction. People have done these kinds of activities for many years and these deforestation activities have brought about a lot of permanent and long term issues. Although the society has started to consider the problem of deforestation, it is not easy to solve the issues completely. Land desertification can be a huge area and it almost cannot be controlled. In addition, it is not only threatening the people and animals in the Amazon, the world is also threatened by deforestation.
The Amazon Rain Forest crosses several national boundaries in South America, although the majority of it is located in Brazil. It covers over 3,562,000 acres, making it the largest in the world. But globally, over 138,600 acres of rain forest are lost each year to deforestation, 50,000 of those in Brazil alone (Holdsforth), and the world's rain forests are quickly disappearing. Deforestation in the Amazon occurs primarily for three reasons: clear-cutting, fragmentation, and edge effects.
Generally pycnometer is made of glass, with a clos-fitting ground glass stopper with capillary tube through it, so that air bubbles mas escape from the apparatus. This device enables a liquid density to be measured through an appropriate working fluid, such as mercury or water, using analytical balance. When the flask weighed empty, full of water, and full of a liquid whose relative density is desired, then relative density can be easily calculated. The specific gravity results show that subsoil specific gravity varies between 2.45 and 2.7. Pycnometer analysis work system shown in Figure 12.
The barometer is a device for measuring the total pressure of the atmosphere. A primitive barometer can easily be constructed by taking a glass tube about a meter long, sealing one end, filling the tube completely with mercury, placing your thumb firmly over the open end, and carefully inverting the tube into an open dish filled with mercury. The mercury will fall to a height independent of the diameter of the tube and a vacuum will be created above it.
the distance from the light source to the plant. Output - The rate of photosynthesis is to be measured by counting the bubbles of oxygen produced by the plant every two minutes, and therefore finding the rate of photosynthesis. Control - The amount of water available to the Elodea will stay the same. same level as the 400 cm3 beaker. The colour of the lamp will stay the same (yellow) as to plants Chlorophyll easily absorbs blue light.
Drought is a difficult thing to measure, mainly because of all the different factors that are involved when determining the kind of drought, its intensity, and the length of the drought. Because drought can be defined in many different ways by many people, these are the three most frequently used: Meteorological, Agricultural, and Hydrological drought (What is Drought, n.d.). A Meteorological drought is typically defined by the degree of dryness and the span of the dry period. Agricultural drought focuses on the precipitation shortages, soil water deficits, and reduced ground water or reservoir levels needed for irrigation. The Hydrological drought occurs after periods of continuous lack of precipitation that reduces the water supply, impacting the community (What is Drought, n.d.). When determining whether the drought is short...
The Redesigned Forest. Toronto: Stoddart Publishing Co. Limited, 1990. Newman, Arnold. Tropical Rainforest. New York: Checkmark Books, 2002.