I live in Maine, a state where growing trees to support paper making has, for nearly 100 years, been a major part of the economy.
The sustainable harvest of hemlock and spruce has actually increased the amount of forested land in this state to a higher percentage than at the time of European settlement. Of Maine's 19 million acres, about 17 million are forested.
(Previous to colonization, Native Americans practiced slash-and-burn agriculture throughout much of the state. From the time of statehood forward, agriculture was a bigger economic contributor here than timber -- because trees grow slowly in northern climes -- until the financial panics of the 1890s, which wiped out most of the farming. This conveniently coincided with the growth of newspapers, which was largely helped by the invention of technology to create paper from wood pulp, versus linen / cotton. That made harvesting softwoods a profitable business.)
We in Maine have had our problems with the environmental impacts of wood harvesting and paper making. Our rivers were, until the 1970s, foul and stinking highways for pulpwood and paper plant waste, until our senators George Mitchell and Edwin Muskie helped pass the Clean Water Act to clean up all such rivers.
Even more recently, practices (such as clear-cutting) that negatively impact flora, fauna, soil and water have been changed, both by fiat and by industry cooperation.
We still have offenders and problems, but most of Maine's large landowners (about two-thirds of the state's lands are owned by fewer than 10 corporations) care deeply about good forest stewardship.
The greatest contribution of profitable tree growth for wood pulp is our tradition of permissive trespass. Unlike other states, here in Maine you can generally freely drive down private roads and use private lands for hiking, fishing, skiing, snowmobiling, camping, ATV riding, hunting and other outdoor activities. It is rare one finds a toll road / gate fee these days, and many large landowners go out of their way to help visitors find and get to places of interest.
All this is made possible by paper. It's done more to keep Maine wild and protect its natural resources than any environmental group ever will. Paper, private land ownership and vigilant cooperation to protect our traditions is not "environmental negative." It's the only way to protect our resources, because people only protect that which they value.
Less than 5 percent of Maine's land is in public ownership (e.g., state and national parks) but it is world-renown for its bounty of natural riches as "Vacationland." Paper did that, not some hippie who thinks hemp is a green strategy.