About one fifth of Sweden's exports are lumber or wood products, and in recent years Sweden produced about 7 percent of the world's wood pulp. Swedish forestry is highly mechanized and relies on various intensive measures such as short rotations, drainage of marginal peatland sites, and thinning. According to Swedish Environmental Protection Agency between 10 and 15 per cent of the species in the Swedish forests are threatened. Less than three per cent of the Swedish forest area is protected, but most of it is concentrated in marginal forest types in the mountains. Below this region only 0.4 per cent is protected.