Mostrando 81 - 98 Resultados de 98 Para Buscar '"Forest Service"', tiempo de consulta: 0.18s Limitar resultados
  1. 81
    “…Tree cover within [Formula: see text] and [Formula: see text] from residences was estimated using 2011 U.S. Forest Service Percent Tree Canopy Cover. Mixed model using climate zone as the random effect was applied to evaluate the associations with adjustments for potential covariates. …”
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  2. 82
    “…U.S. domestic carbon emission factors are from state-level modelling with a surrogate CENTURY model and U.S. Forest Service data. This paper investigates the effect of several key domestic lands carbon content modelling parameters on LUC GHG emissions. …”
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  3. 83
  4. 84
    “…Effective connectivity remains within 10% of that in the whole network for all species. A Forest Service habitat management strategy excluded up to 40% of the occupied habitat of each species resulting in both range reductions and loss of occurrences from the central portions of each species’ distribution. …”
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  5. 85
    “…Remotely sensed ACD was validated against U.S. Forest Service FIA plot inventory data (R(2) = 0.67; RMSE = 30.4 Mg C ha(−1)). …”
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  6. 86
    “…(Forestry 87(1): 129–151, 2014) and the US Forest Service’s Component Ratio Method (CRM). We found that Jenkins and Chojnacky models perform comparably, but that at both a field plot level and a total county level there was a ~ 20% difference between these estimates and the CRM estimates. …”
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  7. 87
    “…Four different O(3) measurement methodologies were deployed in a mobile sampling platform downwind of active prescribed grassland fire lines in Kansas and Oregon and during controlled chamber burns at the United States Forest Service, Rocky Mountain Research Station Fire Sciences Laboratory in Missoula, Montana. …”
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  8. 88
    “…CHANGES IN FOREST STRUCTURE: We compare pre-settlement to modern forests using US Forest Service Forest Inventory and Analysis (FIA) data to show the prevalence of lost forests (pre-settlement forests with no current analog), and novel forests (modern forests with no past analogs). …”
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  9. 89
    “…The obtained reconstruction was compared with the results of other methods (mowing window, OUTBREAK, independent component analysis), literature, and Forest Service data. The developed new method (pointer year method; PYM) showed high efficiency confirmed by results of the tree-ring series analysis (11 revealed outbreaks in the past). …”
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  10. 90
    “…Across our study region of western Oregon, we found that more of the fish-bearing network is on private lands than on state, US Bureau of Land Mangement (BLM), or USDA Forest Service (USFS) lands, highlighting the importance of using spatially consistent maps across a region and working across land ownerships. …”
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  11. 91
    “…The objectives were to (1) model the probability of forest conversion and C stocks dynamics using USDA Forest Service Forest Inventory and Analysis (FIA) data and (2) create wall-to-wall maps showing estimates of the risk of areas to convert from forest to non-forest. …”
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  12. 92
    “…Fungal isolates are deposited in the fungal culture collection of USDA Forest Service, RMRS, Moscow, Idaho, USA, and tef1 sequences are deposited in GenBank.Conclusions: This study represents the first reports of D. caespitosa on lychee in Veracruz and A. mexicana on avocado and pine trees in Michoacán, Mexico.…”
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  13. 93
    “…Under all scenarios, the greatest changes in ecosystem services were related to the natural reforestation of abandoned grassland, causing a shift from grassland to forest services. Although the high resilience potential of most ecosystem services will be maintained in the future, climate change seems to have negative impacts, especially on the resilience of forage production. …”
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  14. 94
    “…For this study, we employed the Slovenian Forests Service inventory, where the proportion of beech in the forest stock has been monitored in 341,341 forest stands across the country. …”
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  15. 95
    “…Production forests as designated by national forest services cover up to 400 million ha, i.e. half of the forested area in the humid tropics. …”
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  16. 96
    “…We found general trends of increasing harvest probability with higher productivity of the region and the species, but with important deviations related to local conditions like site accessibility, state of the forest resource (like age), specific subsidies, importance of other forest services, and ownership of the forest. As a result, we find a huge diversity in harvest regimes. …”
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  17. 97
    “…It remains however controversial whether harvesting a few trees per hectare can be maintained in the long term while preserving other forest services as well. We used a unique 24 year silvicultural experiment, encompassing 10 4 ha plots established in the Central African Republic, to assess the effect of disturbance linked to logging (two to nine trees ha(−1) greater than or equal to 80 cm DBH) and thinning (11–41 trees ha(−1) greater than or equal to 50 cm DBH) on the structure and dynamics of the forest. …”
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  18. 98
    “…Therefore, local conservation policies recommended not only protect large forests, but also the small and valuable forests service to the needs of local people.…”
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