Author: Publisher:
ISBN:
Category : Canals, Interoceanic
Languages : en
Pages : 1104
Book Description
Elihu Root Collection of United States Documents
Author: Publisher:
ISBN:
Category : Canals, Interoceanic
Languages : en
Pages : 1104
Book Description
Forest Reference Conditions for Ecosystem Management in the Sacramento Mountains, New Mexico
Author: Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 96
Book Description
We present the history of land use and historic vegetation conditions on the Sacramento Ranger District of the Lincoln National Forest within the framework of an ecosystem needs assessment. We reconstruct forest vegetation conditions and ecosystem processes for the period immediately before Anglo-American settlement using General Land Office survey records, historic studies and accounts, and reconstructive studies such as dendrochronological histories of fire and insect outbreak and studies of old growth. Intensive grazing, clearcut logging, fire suppression, and agriculture in riparian areas have radically altered forest structure and processes since the 1880s, when intensive settlement began in the Sacramento Mountains. Present forests are younger and more dense than historic ones, and in areas that were previously dominated by ponderosa pine, dominance has shifted to Douglas-fir and white fir in the absence of frequent surface fire. Landscapes are more homogeneous and contiguous than historic ones, facilitating large-scale, intense disturbances such as insect outbreaks and crown fires.
Annual Report of the Secretary of the Interior
Author: United States. Dept. of the InteriorPublisher:
ISBN:
Category : United States
Languages : en
Pages : 932
Book Description
Annual Report of the Department of the Interior
Author: United States. Department of the InteriorPublisher:
ISBN:
Category : Public lands
Languages : en
Pages : 1168
Book Description
Engineering; an Illustrated Weekly Journal
Author: Engineering
Author: Colliery Guardian and Journal of the Coal and Iron Trades
Author: Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 504
Book Description
Lincoln National Forest (N.F.), Proposed, Plan
Author: Timeless Heritage
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 208
Book Description
![First-[third and Final] Report of the Geological Survey of Natal and Zululand PDF](https://books.google.com/books/content/images/frontcover/eEvnAAAAMAAJ?fife=w80-h100)
Author: Geological Survey