2 resultados para Random forests
em Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States
Resumo:
A river or stream and its floodplain exist in a state of dynamic equilibrium. This four page report explains the management of floodplain forests.
Resumo:
Iowa’s three million acres of forest land provide environmental benefits to all Iowans in terms of soil erosion control, air quality, and water quality. In 2013, more than 6.5 million trees died. Within those trees there were more than 125 million board feet of wood, compared to 98 million board feet of wood harvested. This level of mortality is the highest level reported from US Forest Service inventories in twenty years. This is disturbing when considering more than 18,000 Iowans are employed in the wood products and manufacturing industry, generating nearly $4 billion in annual sales, more than $900 million in annual payroll and more than $25 million to private woodland owners annually from the sale of timber.