Thursday, December 2, 2010
Forest Soil, by Rebecca
Nitrate is one of the three major nutrients in soil. In order for the soil to be healthy it needs to contain a certain amount of nitrate. This helps with the growth of plants and fighting off any diseases that the plant may encounter. The soil sample from Nose Hill Park, after being tested, showed that it contained 7mg/L per 100mL. Nitrate is available to plants when the pH of the soil is greater than 5.5. In the tests it was concluded that the pH of the soil was about 6.5. Therefore from that data it is evident that the soil contains a healthy amount of nitrate.
So what is healthy soil? Healthy soil must contain certain levels of Nitrate, Phosphorus, and Potassium. Without these nutrients it can have damaging effects on plants and can cause difficulty in fighting off any diseases. Based on the results from tests of soil from a transect of a forest on Nose Hill, the soil is concluded healthy.
"Temperate Deciduous Forest Biome", http://mbgnet.mobot.org/pfg/diverse/temp/index.htm, 11/4/00
This website was helpful as it mentioned all of the factors that contribute to a healthy forest ecosystem. It provided key points, and pictures to go with them. I would rate this a 4/5.
"The World's Biomes: Forest", http://www.latymerupper.org/geog/sixth/forest%20the%20not%20do%20barren%20land.htm, (July 2000).
The world biomes website gave factual information on a forest ecosytem that allowed us to relate it to the forest ecosystem on Nose Hill Park. However this website was not as helpful as Soil pH, because it did not focus on our main topic. I would rate this website a 3/5.
C. Spector, Soil Science Education. “About Soil pH,” http://soil.gsfc.nasa.gov/soil_pH/plant_pH.htm
This website was extremely helpful. It provided us with most of the information we needed to help draw a conclusion to our research question. This website included helpful diagrams and facts on soil nutrient levels. I would rate this website a 5/5