Forests of this type are utterly unproductive areas that do very little for the local people, and absolutely nothing for anybody else.

Of the unproductive areas, the entire area is unproductive flowing water (rivers).

Of the unproductive areas, and 0.14% is other unproductive land.

Lakes, rivers and wetlands are also unproductive areas.

An estate ten thousand square miles in area is not uncommon, although the largest ones contain considerable unproductive areas.

Of the total unproductive area, water (streams and lakes) made up 0% of the area.

Of the unproductive areas, it is all unproductive flowing water (rivers).

Of the unproductive areas, and 1.2% is too rocky for vegetation.

Of the unproductive areas, 1.4% is too rocky for vegetation.

The poor quality of the soil in the surrounding district made the development of farming in the area difficult and unproductive.