Living in the Environment 18th Edition by Tyler Miller,Scott Spoolman

تمرين 20

Consider the graph on the right that shows loss of calcium from the experimental cutover site of the Hubbard Brook Experimental Forest ( Core Case Study ) compared with that of the control site. Note that this figure is very similar to Figure 2-5, which compares loss of nitrates from the two sites. After studying this graph, answer the questions below.

Does this graph support the hypothesis that cutting the trees from a forested area causes the area to lose nutrients more quickly than leaving the trees in place Explain.