Do trees modify their environment?

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                                                                                                                                                                                                                                                                                                Introduction.                                                                                                        The course work I am doing is to investigate and test the two-following hypothesis. The first one is " Do tree's modify their environment", and the second one is "Differences in woodland ecosystems are the results of different management strategies". These first hypothesis means do trees change their surroundings, and the second on is different woodland surroundings means different types of management. To help answer these two hypotheses I will break them down into two or three smaller ones.  Also I will use the data I collected in the woodlands of Wye valley I show this data in forms of table’s graphs and pie charts.                                                                                                                                         Wye Valley.                                                                                                         Wye valley is place in Wales were 50 pupils went in the summer for a residential. We all went to Russell's Inclosure, which is on the border of Wales and England. This is a part of the Forest of Dean. The forest is very old and covers over 477 hectares of the land. The forest is well kept and preserved as it managed by the Royal society for the protection of birds. In the woods of Russell’s Inclosure is where had collected most of our data and statistics. I have marked out where it is on the following page.                                                                                                    When we were in the woods we took many a lot of data down. We had a twelve-meter transact and for every four metres we wrote down the ground cover, we got the ground cover by placing a square quadrate down on the floor. We had used a lot of apparatus out in the woods to get our results. We had a thermometer for taking the temperature and a soil moisture tester to find out the moisture of the soil. We also found out the pH of the soil, we did this by taking a little bit of soil putting it in a test tube and adding some universal indicator and bromine sulphate to it and then stirring it. We than found out the pH by looking at the colour it produced at the end. While in the woods we found out the ages of the trees. By using a measuring tape and finding out the circumference and then dividing it by 2.5 or 3.13 depending if it was in the deciduous wood or coniferous.                                                                                                                                                                                DO TREES MODIFY THEIR ENVIRONMENT?                                                                                                                                                The first hypothesis I am going to be investigating is "Where there are coniferous trees the soil moisture will be less than where there are deciduous trees and fewer plants on the floor". To help me answer this hypothesis I am going to test a couple of smaller hypothesis.                                                                                                In coniferous woods there will be less soil moisture and fewer plants, than in a deciduous wood. This is because they are both different types of tree's,. Coniferous trees are pine tree's that grow needles and grow straight toward the sun. They also planted in rows so it becomes much easier for them to be chopped down. They are chopped down because many people buy them as Christmas trees and it is easy money for the forest management. Deciduous trees grow up to the sunlight but their leaves spread out forming a canopy to the under layer of the forest. So this means the plants on the ground don’t get as much sunlight because the canopy formed has an umbrella like effects it blocks out most perspiration water and sunlight.                        

Coniferous trees are evergreen this means that they don’t loose their needles all year around and they intercept the rain much well than a deciduous tree. This is because when they are planted they are all in rows together and there isn't many gaps left. Deciduous trees are planted at random so gaps are left and there are some open spaces. So this means that rain can come through in the deciduous woods. Also the ground will be moister then compared to coniferous wood. More plants will be growing on the grounds of the deciduous wood then of a coniferous because plants need sunlight, water and carbon dioxide to grow. Coniferous trees block out the sunlight and rainwater coming to the trees. Photosynthesis can’t take place if water and sunlight is coming to the plants so plant can’t grow. Deciduous woods have gaps and loose their leaves in the autumn season so they can get enough of their needs to ground photosynthesise.

        My pie chart number 12 "Deciduous wood at 12 meters" clearly shows more sunlight and water comes through also chart number 10. They both show a high percentage of grass on the ground. My chart numbers 1 to 4 clearly shows there is minimum sunlight and water coming through and the high percentage of moss on the ground shows this. There is up 90% of moss growing in that 12 meter transacts, and moss only grows in dark and damp areas. My results and charts help me in proving this hypothesis.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

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                          GROUND COVER OF THE WOODS.                                                                                                                                                                                                                                

                                                                                                                                                                                                                                                                                                This table above shows what we saw on the ground in the woods. It also shows why it could have been found and why it couldn’t have been found.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Coniferous and deciduous woods ground cover compared and shown in a table.                                                                                                                                                                                                

                                                                                                                                                                                                        = Coniferous woods.                                                                                                                                                                                                                                                                                                                                                                        

        = Coniferous woods.                                                                                                                                                                        Coniferous and deciduous woods across the path ground cover compared and shown in a table.                                                                                                                                                                                The dominant cover for coniferous and deciduous woods is grass and soil.                                                                                                                The medium cover for the coniferous wood and deciduous wood is grass and dead       leaves.                                                                                                The lowest cover for coniferous woods ...

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