Trees are one of the best partners when it comes to agriculture. They act positively in several ways: they reduce soil erosion, increase fertility and help soil obtain moisture. Fallen tree leaves lower reduce soil temperature and prevent soil from losing too much moisture. Decaying leaves that fall onto the ground turn into nutrients for tree growth and promote microorganism development.Rain and wind are two primary erosion forces that damage the bare soil. As they fall from heights, drops of rain gain power and momentum which is strong enough to penetrate soil once they hit the ground. On the other hand, if the land is dried out, then wind can do significant damage. Trees break droplets of rain and weaken their strength while roots hold the soil together and protect it from effects of wind.