Human Impacts To Fire Regime In Interior Alaska
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Human Impacts To Fire Regime In Interior Alaska
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Author : La'ona DeWilde
language : en
Publisher:
Release Date : 2003
Human Impacts To Fire Regime In Interior Alaska written by La'ona DeWilde and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Forest fires categories.
"A thorough analysis of human impacts on interior Alaska's fire regime demonstrates that human activities have effects in populated areas. Two approaches were used to determine impacts: I examined three regions with very different populations, and also one large region to analyze suppression, ignition, and vegetation interactions. The Fairbanks Region, with a large human population and an extensive road system, differs from two other regions with low human populations and few roads. In the Fairbanks Region, humans have impacted fire regime by causing more fires in certain fuel types and doubling the length of the fire season. The Fairbanks Region, with a higher level of suppression than the other two regions, has less area of land burn, even after controlling for fuel type and a higher number of human ignitions. In areas designated for high protection, there is less area burned and more human caused starts. For interior Alaska as a whole, human ignitions and suppression have only a minor effect on fire regime, and climate strongly influences the total area burned. However, in populated areas and areas designated for high protection, human ignitions account for most of the area burned, and less area bums overall due to suppression"--Leaf iii.
Alaska S Changing Boreal Forest
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Author : F. Stuart Chapin
language : en
Publisher: Oxford University Press
Release Date : 2006-01-12
Alaska S Changing Boreal Forest written by F. Stuart Chapin and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-12 with Science categories.
The boreal forest is the northern-most woodland biome, whose natural history is rooted in the influence of low temperature and high-latitude. Alaska's boreal forest is now warming as rapidly as the rest of Earth, providing an unprecedented look at how this cold-adapted, fire-prone forest adjusts to change. This volume synthesizes current understanding of the ecology of Alaska's boreal forests and describes their unique features in the context of circumpolar and global patterns. It tells how fire and climate contributed to the biome's current dynamics. As climate warms and permafrost (permanently frozen ground) thaws, the boreal forest may be on the cusp of a major change in state. The editors have gathered a remarkable set of contributors to discuss this swift environmental and biotic transformation. Their chapters cover the properties of the forest, the changes it is undergoing, and the challenges these alterations present to boreal forest managers. In the first section, the reader can absorb the geographic and historical context for understanding the boreal forest. The book then delves into the dynamics of plant and animal communities inhabiting this forest, and the biogeochemical processes that link these organisms. In the last section the authors explore landscape phenomena that operate at larger temporal and spatial scales and integrates the processes described in earlier sections. Much of the research on which this book is based results from the Bonanza Creek Long-Term Ecological Research Program. Here is a synthesis of the substantial literature on Alaska's boreal forest that should be accessible to professional ecologists, students, and the interested public.
Effects Of Large Scale Forest Fires On Water Quality In Interior Alaska
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Author : Frederick B. Lotspeich
language : en
Publisher:
Release Date : 1970
Effects Of Large Scale Forest Fires On Water Quality In Interior Alaska written by Frederick B. Lotspeich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Forest fires categories.
Research Paper Pnw
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Author :
language : en
Publisher:
Release Date : 1978
Research Paper Pnw written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Forests and forestry categories.
Fire In The Northern Environment A Symposium
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Author : Alaska Forest Fire Council
language : en
Publisher: Portland, Or : Pacific Northwest Forest and Range Experiment Station
Release Date : 1971
Fire In The Northern Environment A Symposium written by Alaska Forest Fire Council and has been published by Portland, Or : Pacific Northwest Forest and Range Experiment Station this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Fire ecology categories.
Interactions Among Climate Fire And Vegetation In The Alaskan Boreal Forest
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Author : Paul Arthur Duffy
language : en
Publisher:
Release Date : 2006
Interactions Among Climate Fire And Vegetation In The Alaskan Boreal Forest written by Paul Arthur Duffy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Fire ecology categories.
"The boreal forest covers 12 million km2 of the northern hemisphere and contains roughly 40% of the world's reactive soil carbon. The Northern high latitudes have experienced significant warming over the past century and there is a pressing need to characterize the response of the disturbance regime in the boreal forest to climatic change. The interior Alaskan boreal forest contains approximately 60 million burnable hectares and, relative to the other disturbance mechanisms that exist in Alaska, fire dominates at the landscape-scale. In order to assess the impact of forecast climate change on the structure and function of the Alaskan boreal forest, the interactions among climate, fire and vegetation need to be quantified. The results of this work demonstrate that monthly weather and teleconnection indices explain the majority of observed variability in annual area burned in Alaska from 1950-2003. Human impacts and fire-vegetation interactions likely account for a significant portion of the remaining variability. Analysis of stand age distributions indicate that anthropogenic disturbance in the early 1900's has left a distinct, yet localized impact. Additionally, we analyzed remotely sensed burn severity data to better understand interactions among fire, vegetation and topography. These results show a significant relationship between burn severity and vegetation type in flat landscapes but not in topographically complex landscapes, and collectively strengthen the argument that differential flammability of vegetation plays a significant role in fire-vegetation interactions. These results were used to calibrate a cellular automata model based on the current conceptual model of interactions among weather, fire and vegetation. The model generates spatially explicit maps of simulated stand ages at 1 km resolution across interior Alaska, and output was validated using observed stand age distributions. Analysis of simulation output suggests that significant temporal variability of both the mean and variance of the stand age distribution is an intrinsic property of the stand age distributions of the Alaskan boreal forest. As a consequence of this non-stationarity, we recommend that simulation based methods be used to analyze the impact of forecast climatic change on the structure and function of the Alaskan boreal forest"--Leaf iii.
Alaska Railroad Corporation Construction And Operation Of A Rail Line Between North Pole And Delta Junction
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Author :
language : en
Publisher:
Release Date : 2009
Alaska Railroad Corporation Construction And Operation Of A Rail Line Between North Pole And Delta Junction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Fire In The Northern Environment A Symposium
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Author : United States. Forest Service
language : en
Publisher:
Release Date : 1971
Fire In The Northern Environment A Symposium written by United States. Forest Service and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Fire ecology categories.
Alaska Railroad Corporation Construction And Operation Of A Rail Line Extension To Port Mackenzie
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Author :
language : en
Publisher:
Release Date : 2011
Alaska Railroad Corporation Construction And Operation Of A Rail Line Extension To Port Mackenzie written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Effects Of Forest Fires On Water Quality In Interior Alaska
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Author : U.S. Federal Water Pollution Control Administration. Alaska Water Laboratory
language : en
Publisher:
Release Date : 1970
Effects Of Forest Fires On Water Quality In Interior Alaska written by U.S. Federal Water Pollution Control Administration. Alaska Water Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.