Please, spare me. Man made erosion is a huge problem and was in the US before more scientific methods of plowing and crop rotation were implemented. Take a drive through some of the older farm areas in the farm belt and it's painfully obvious what man made erosion can accomplish. As for deforestation, fly over Haiti or Madagascar and you'll see an environment stripped of vegetation and huge silt plumes coming from the rivers.
I guess you don't see too much of that part of the world from Lake Tahoe.
Please spare me the constant attack on the productive activities of mankind! Sure, some things were done badly in another time when ignorance ran rife, but not now!! Can you not see ANY improvement? Or do you wish to join the leftist in continually condemning profitable Capitalism???