Excerpt from The Extent and Characteristics of Low Productivity Aspen Areas in Minnesota In Minnesota, million acres of aspen (49 per cent of the total table 1) currently achieve less than half of their potential, if only growing-stock trees are considered. Even if all live trees are included, million acres (29 percent of the aspen type) achieve less than half of their potential. Thus, the potential exists for greatly increasing yield of the aspen type in Minnesota. If it were desirable and possible to reach full pro ...
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Excerpt from The Extent and Characteristics of Low Productivity Aspen Areas in Minnesota In Minnesota, million acres of aspen (49 per cent of the total table 1) currently achieve less than half of their potential, if only growing-stock trees are considered. Even if all live trees are included, million acres (29 percent of the aspen type) achieve less than half of their potential. Thus, the potential exists for greatly increasing yield of the aspen type in Minnesota. If it were desirable and possible to reach full pro duction in all of the aspen type, there could be an annual harvest of acres containing a total of million cubic feet.3 The 197 6 aspen growing stock removals for products in Minnesota was million cubic feet. This level of removals could be supported by maintaining full stocking on only the best percent of aspen sites. Attaining full stocking on all acres of aspen type is an unrealistic goal (bruce 1977, Spurr and Vaux Insect and disease epidemics, windstorms, drought, and many other factors all contribute to understocking and make full stocking on every acre an unattainable goal. However, maintaining full stocking on the best 39 percent of the aspen land would produce as much volume as the entire aspen type currently produces. Research is needed to de termine why large areas are understocked and to suggest measures that could _be taken to improve stocking. To achieve full site potential in poorly stocked as pen stands, the existing stand may have to be re moved and the site regenerated by appropriate mea sures. But it may not be desirable to regenerate all sites to aspen - some sites may be better adapted to other species, or the cost of site preparation to ensure full stocking may exceed the benefit. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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