نتایج جستجو برای: land fire

تعداد نتایج: 158578  

Journal: :Ecological applications : a publication of the Ecological Society of America 2016
Tracy L Hmielowski Sarah K Carter Hannah Spaul David Helmers Volker C Radeloff Paul Zedler

One challenge in the effort to conserve biodiversity is identifying where to prioritize resources for active land management. Cost-benefit analyses have been used successfully as a conservation tool to identify sites that provide the greatest conservation benefit per unit cost. Our goal was to apply cost-benefit analysis to the question of how to prioritize land management efforts, in our case ...

2001
Steven P. Brumby James Theiler Jeffrey J. Bloch Neal R. Harvey Simon Perkins John J. Szymanski Cody Young

The Cerro Grande/Los Alamos forest fire devastated over 43,000 acres (17,500 ha) of forested land, and destroyed over 200 structures in the town of Los Alamos and the adjoining Los Alamos National Laboratory. The need to measure the continuing impact of the fire on the local environment has led to the application of a number of remote sensing technologies. During and after the fire, remote-sens...

Journal: :جغرافیا و توسعه فضای شهری 0
محسن احدنژاد روشتی توحید احمدی راضیه تیموری

aid uses, including fire stations, according to critical activities that are responsible, in comparison to other city services, are more important. identify areas where are located outside of the fire stations covered services can help urban planners to site selection of this important land use. the purpose of this paper is detection the areas that are beyond the services coverage of the fire s...

2002
Paul F. Hessburg James K. Agee

Fire was arguably the most important forest and rangeland disturbance process in the Inland Northwest United States for millennia. Prior to the Lewis and Clark expedition, fire regimes ranged from high severity with return intervals of one to five centuries, to low severity with fire-free periods lasting three decades or less. Indoamerican burning contributed to the fire ecology of grasslands a...

Journal: :Ecological applications : a publication of the Ecological Society of America 2016
Emily J Fusco John T Abatzoglou Jennifer K Balch John T Finn Bethany A Bradley

Humans have a profound effect on fire regimes by increasing the frequency of ignitions. Although ignition is an integral component of understanding and predicting fire, to date fire models have not been able to isolate the ignition location, leading to inconsistent use of anthropogenic ignition proxies. Here, we identified fire ignitions from the Moderate Resolution Imaging Spectrometer (MODIS)...

2004
Lisa B. Saperstein Kyle Joly

Objective 2: Improve, maintain or enhance habitat diversity by managing naturally ignited wildfire. a. Complete vegetation mapping of the Buckland Valley Wildlife Habitat Area (WHA), that was initiated during Fiscal Year (FY) 82, by end of FY84. Rationale: At this time, the land cover on that portion of the WHA west of the Tagagawik River has been mapped from 1:60,000 scale color IR photos and ...

Journal: :Trends in plant science 2011
Jon E Keeley Juli G Pausas Philip W Rundel William J Bond Ross A Bradstock

Traits, such as resprouting, serotiny and germination by heat and smoke, are adaptive in fire-prone environments. However, plants are not adapted to fire per se but to fire regimes. Species can be threatened when humans alter the regime, often by increasing or decreasing fire frequency. Fire-adaptive traits are potentially the result of different evolutionary pathways. Distinguishing between tr...

2008

Fire-driven deforestation is the major source of carbon emissions from Amazonia. Recent expansion of mechanized agriculture in forested regions of Amazonia has increased the average size of deforested areas, but related changes in fire dynamics remain poorly characterized. We estimated the contribution of fires from the deforestation process to total fire activity based on the local frequency o...

2015
José M. C. Pereira Duarte Oom Paula Pereira Antónia A. Turkman K. Feridun Turkman Philip Anglewicz

Vegetation burning is a common land management practice in Africa, where fire is used for hunting, livestock husbandry, pest control, food gathering, cropland fertilization, and wildfire prevention. Given such strong anthropogenic control of fire, we tested the hypotheses that fire activity displays weekly cycles, and that the week day with the fewest fires depends on regionally predominant rel...

2016
Yiquan Jiang Zheng Lu Xiaohong Liu Yun Qian Kai Zhang Yuhang Wang Xiu-Qun Yang

Aerosols from open-land fires could significantly perturb the global radiation balance and induce climate change. In this study, Community Atmosphere Model version 5 (CAM5) with prescribed daily fire aerosol emissions is used to investigate the spatial and seasonal characteristics of radiative effects (REs, relative to the case of no fires) of open-fire aerosols including black carbon (BC) and ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید