scholarly journals Natural vegetation cover on private lands: locations and risk of loss in the northwestern United States

Ecosphere ◽  
2021 ◽  
Vol 12 (10) ◽  
Author(s):  
Andrew J. Hansen ◽  
Katrina Mullan ◽  
David M. Theobald ◽  
Scott Powell ◽  
Nathaniel Robinson ◽  
...  
Keyword(s):  
United States ◽  
Vegetation Cover ◽  
Natural Vegetation ◽  
Private Lands

Land-use Conflicts with Natural Vegetation in the United States

1979 ◽  
Vol 6 (3) ◽  
pp. 191-199 ◽  
Author(s):  
Jeffrey M. Klopatek ◽  
Richard J. Olson ◽  
Craig J. Emerson ◽  
Jan L. Joness
Keyword(s):  
United States ◽  
Land Use ◽  
Plant Communities ◽  
Vegetation Cover ◽  
The United States ◽  
Natural Vegetation ◽  
Computer Algorithm ◽  
Potential Natural Vegetation ◽  
Land Use Conflicts

There exists no current inventory of how much of the United States is occupied by natural vegetation, nor how much area is covered by particular plant communities. In this study, the potential existing vegetation-cover of the United States was determined by using a computer algorithm that was developed to subtract extant landuse data from the potential natural vegetation. This was done on a county-by-county basis for the 48 conterminous States.

scholarly journals Woody Vegetation Cover, Attrition, and Patch Metrics over Eight Decades in Central Texas, United States

2021 ◽  
Vol 78 ◽  
pp. 54-66
Author(s):  
Edward C. Rhodes ◽  
Jay P. Angerer ◽  
William E. Fox ◽  
Jason R. McAlister
Keyword(s):  
United States ◽  
Vegetation Cover ◽  
Woody Vegetation ◽  
Central Texas

scholarly journals Methods of GI modeling of biogenic substances removal to the Gulf of Finland from forest vegetation cover

2020 ◽  
Vol 26 (2) ◽  
pp. 137-150
Author(s):  
Alexey Osipov ◽  
Georgy Osipov ◽  
Vasily Kovyazin
Keyword(s):  
Vegetation Cover ◽  
Catchment Area ◽  
Water Area ◽  
Forest Vegetation ◽  
Natural Vegetation ◽  
Water Bodies ◽  
Gulf Of Finland ◽  
Economic Activities ◽  
Biogenic Substances ◽  
The Gulf Of Finland

Biogenic pollution of water bodies and their eutrophication is one of the most serious environmental problems of our time. One of the sources of water pollution with biogenic substances is forests, which belong to the background sources of biogenic load. Currently available methods for assessing the removal of nutrients from the forest vegetation cover do not provide the desired results, which causes an urgent need for their improvement. This article describes the method developed by the authors of geoinformation modeling of removal of biogenic substances from the forest vegetation cover to water bodies, taking into account the spatial distribution of vegetation in the catchment area, its species composition and absorption of biogenic substances during their migration. The Eastern part of the Gulf of Finland was adopted as the object of testing of the developed method. this is due to the fact that eutrophication processes are actively manifested within its water area. The volume of the background biogenic load on the Gulf of Finland, formed during the decomposition of the fall of the natural vegetation cover in the catchment area, was determined based on the specific removal of biogenic substances from plant communities and their absorption during migration “plant community — water object”. The total background biogenic load on the eastern part of the Gulf of Finland, formed as a result of decomposition of natural vegetation cover, was 170.21 t/year for the northern catchment for nitrogen, 12.14 t/year for phosphorus, and 207.31 t/year for the southern catchment for nitrogen , and 15.68 t/year for phosphorus. The data obtained do not contradict the results of other authors who study the background biogenic load on the Gulf of Finland. The method can be effectively used in the development of measures to reduce the nutrient load on water bodies and planning of economic activities in catchments.

Harvest Activity and Residual Pine Stocking on Private Lands of Six South-Central Coastal States

1990 ◽  
Vol 14 (2) ◽  
pp. 59-63
Author(s):  
William H. McWilliams
Keyword(s):  
United States ◽  
The South ◽  
Private Lands ◽  
Forest Inventories ◽  
South Central ◽  
Central United States ◽  
Pine Stands

Abstract Commercial harvests were carried out on 36% of the pine-site timberland in six states of the south-central United States during the interval of time between the last two forest inventories of each state. Half of forest industry's pine-site timberland was harvested, compared with 30% for nonindustrial private owners. Fifty-four percent of the heavily cut pine stands were at least 60% stocked with pine following harvest. The overall rate of replacement for pine stands was 78%. South. J. Appl. For. 14(2):59-63.

scholarly journals Regulation and Practice of Forest-Management Fires on Private Lands in the Southeast United States: Legal Open Burns versus Certified Prescribed Burns

2020 ◽  
Vol 118 (4) ◽  
pp. 385-402
Author(s):  
Xue Han ◽  
Gregory E Frey ◽  
Changyou Sun
Keyword(s):  
United States ◽  
Forest Management ◽  
Standard Of Care ◽  
Past Research ◽  
The United States ◽  
Management Tool ◽  
Policy And Practice ◽  
Private Lands ◽  
Prescribed Burns ◽  
Southeast United States

Abstract Abstract Forest-management burns have been widely acknowledged as a useful land-management tool in the United States. Nevertheless, fire is inherently risky and may lead to severe damages or create smoke that affects public health. Past research has not explored the difference in policy and practice between open burns, which meet minimum legal criteria, and certified prescribed burns, which follow a higher standard of care. This study seeks to understand the distinction between legal open burns and certified prescribed burns, and, furthermore, to identify trends by type of burn in the Southeast United States. To that end, we compared statutes, regulations, incentives, and notifications of fire as a forest-management tool among nine states in the US Southeast. We found no steady time trends in number or area of burns among the states for the past decade. A nontrivial proportion of legal open burns, which tend to be smaller burns, are noncertified burns, meaning they meet minimum legal requirements, but not the higher standard required for certified prescribed burns.

scholarly journals Contemporary Fire Regimes Provide a Critical Perspective on Restoration Needs in the Mexico-United States Borderlands

2020 ◽  
Vol 13 ◽  
pp. 117862212096919
Author(s):  
Miguel L Villarreal ◽  
José M Iniguez ◽  
Aaron D Flesch ◽  
Jamie S Sanderlin ◽  
Citlali Cortés Montaño ◽  
...  
Keyword(s):  
United States ◽  
Land Tenure ◽  
Relevant Literature ◽  
Fire Regimes ◽  
The United States ◽  
Fire Frequency ◽  
Management Tool ◽  
Vegetation Types ◽  
Private Lands ◽  
United States Mexico

The relationship between people and wildfire has always been paradoxical: fire is an essential ecological process and management tool, but can also be detrimental to life and property. Consequently, fire regimes have been modified throughout history through both intentional burning to promote benefits and active suppression to reduce risks. Reintroducing fire and its benefits back into the Sky Island mountains of the United States-Mexico borderlands has the potential to reduce adverse effects of altered fire regimes and build resilient ecosystems and human communities. To help guide regional fire restoration, we describe the frequency and severity of recent fires over a 32-year period (1985-2017) across a vast binational region in the United States-Mexico borderlands and assess variation in fire frequency and severity across climate gradients and in relation to vegetation and land tenure classes. We synthesize relevant literature on historical fire regimes within 9 major vegetation types and assess how observed contemporary fire characteristics vary from expectations based on historical patterns. Less than 28% of the study area burned during the observation period, excluding vegetation types in warmer climates that are not adapted to fire (eg, Desertscrub and Thornscrub). Average severity of recent fires was low despite some extreme outliers in cooler, wetter environments. Midway along regional temperature and precipitation gradients, approximately 64% of Pine-Oak Forests burned at least once, with fire frequencies that mainly corresponded to historical expectations on private lands in Mexico but less so on communal lands, suggesting the influence of land management. Fire frequency was higher than historical expectations in extremely cool and wet environments that support forest types such as Spruce-Fir, indicating threats to these systems possibly attributable to drought and other factors. In contrast, fires were absent or infrequent across large areas of Woodlands (~73% unburned) and Grasslands (~88% unburned) due possibly to overgrazing, which reduces abundance and continuity of fine fuels needed to carry fire. Our findings provide a new depiction of fire regimes in the Sky Islands that can help inform fire management, restoration, and regional conservation planning, fostered by local and traditional knowledge and collaboration among landowners and managers.

scholarly journals Predicted thresholds for natural vegetation cover to safeguard pollinator services in agricultural landscapes

2020 ◽  
Vol 290 ◽  
pp. 106785
Author(s):  
Arnob Chatterjee ◽  
Soumik Chatterjee ◽  
Barbara Smith ◽  
James E. Cresswell ◽  
Parthiba Basu
Keyword(s):  
Vegetation Cover ◽  
Agricultural Landscapes ◽  
Natural Vegetation

A state assessment of private lands wildlife conservation in the United States

2019 ◽  
Vol 43 (3) ◽  
pp. 328-337 ◽  
Author(s):  
John J. Morgan ◽  
Cody M. Rhoden ◽  
Bill White ◽  
Steven P. Riley
Keyword(s):  
United States ◽  
Wildlife Conservation ◽  
The United States ◽  
State Assessment ◽  
Private Lands

The impact of recent land-use change in the Araucaria araucana forest in northern Patagonia

The Holocene ◽  
2020 ◽  
Vol 30 (8) ◽  
pp. 1101-1114 ◽  
Author(s):  
Ricardo Moreno-Gonzalez ◽  
Thomas Giesecke ◽  
Sonia L Fontana
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Vegetation Cover ◽  
Natural Vegetation ◽  
Northern Patagonia ◽  
Rumex Acetosella ◽  
Araucaria Araucana ◽  
The 1950S ◽  
The Impact ◽  
Nothofagus Dombeyi

Land-use change in the form of extensive Pinus plantations is currently altering the natural vegetation cover at the forest–steppe ecotone in northern Patagonia. Providing recommendations for conservation efforts, with respect to this recent and earlier land-use changes, requires a longer time perspective. Using pollen analysis, we investigated to what degree the colonization of the area by Euro-American settlers changed the forest composition and the vegetation cover, and to explore the spread of the European weed Rumex acetosella. This study is based on short sediment cores from six lakes in the Araucaria araucana forest region, across the vegetation gradient from the forest to the steppe. Results document that although Araucaria araucana has been extensively logged elsewhere, near the investigated sites, populations were rather stable and other elements of the vegetation changed little with the initiation of Euro-American settlements. A reduction of Nothofagus dombeyi-type pollen occurred at some sites presumably due to logging Nothofagus dombeyi trees, while toward the steppe, Nothofagus antarctica shrubs may have been removed for pasture. The appearance of Rumex acetosella pollen is consistent with the initiation of land use by Euro-American settlers in all cores, probably indicating the onset of animal farming. The rise of the Rumex acetosella pollen curve during the 1950s marks more recent land-use change. These observations indicate that the spread and local expansion of the weed requires disturbance. Overall, the study shows that the initial colonization of the area by Euro-American settlers had little effect on the natural vegetation structure, while developments since the 1950s are strongly altering the natural vegetation cover.

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