Establishing Reference Conditions for Southwestern Ponderosa Pine Forests PDF Download
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Author: Peter Friederici
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 16
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Book Description
Restoration treatments that include prescribed burning, often preceded by thinning to reduce fuel loads, have the potential to improve the ecological health of these forests. In order to wisely set the goals that underlie these treatments, it is useful for us to know as much as possible about past forest conditions, especially the reference conditions that existed before forest structure and function were altered by Euro-American settlers. They formed the evolutionary environment of southwestern ponderosa pine trees a fairly stable environment, in other words, in which this tree species and many other plants and animals evolved and adapted. Restoring conditions similar to those of the evolutionary environment is not a matter of trying to return to the past; rather, it is only a way to assure the long-term health of these forests into the future.
Author: Peter Friederici
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 16
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Book Description
Restoration treatments that include prescribed burning, often preceded by thinning to reduce fuel loads, have the potential to improve the ecological health of these forests. In order to wisely set the goals that underlie these treatments, it is useful for us to know as much as possible about past forest conditions, especially the reference conditions that existed before forest structure and function were altered by Euro-American settlers. They formed the evolutionary environment of southwestern ponderosa pine trees a fairly stable environment, in other words, in which this tree species and many other plants and animals evolved and adapted. Restoring conditions similar to those of the evolutionary environment is not a matter of trying to return to the past; rather, it is only a way to assure the long-term health of these forests into the future.
Author:
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 96
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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.
Author:
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Category : Forest management
Languages : en
Pages : 202
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Book Description
Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 308
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 742
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Book Description
Author: Laurie Stroh Huckaby
Publisher:
ISBN:
Category : Fire ecology
Languages : en
Pages : 56
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Book Description
We describe the distinguishing physical characteristics of old ponderosa pine trees in the Front Range of Colorado, the processes that tend to preserve them, their past and present ecological significance, and their role in ecosystem restoration. Photographs illustrate identifying features of old ponderosa pines and show how to differentiate them from mature and young trees. The publication includes a photographic gallery of old ponderosa pine trees growing on poor, moderate, and good sites. We illustrate trees growing under various forest conditions and with different injuries and histories. We discuss dendrochronological methods of aging old trees and determining their fire history. The companion field guide includes a condensed description of ponderosa pine ecology, distinguishing characteristics of old ponderosa pines, and a photographic gallery illustrating their identifying features.
Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 160
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Book Description
Author:
Publisher:
ISBN:
Category : Diffusion of innovations
Languages : en
Pages : 268
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 842
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 392
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Book Description
