Question: What part of the total forested are is covered by Lodgepole Pine forests?
About the article "Yellowstone National Park", section "Flora".

Candidate passages:
The Gearhart Mountain Wilderness area is part of a continuous dry pine forest covering the transition zone.
Differences in species are primarily dependent on water availability.
The lower slopes tend to be dominated by white fir with a mix of ponderosa pine, whitebark pine, and lodgepole pines, while the higher elevations are covered with pure stands of lodgepole and whitebark pine.
The meadows scattered throughout the Wilderness are characterized by lush green ground cover, stands of aspen, and a multitude of wildflowers.
Gearhart Mountain Wilderness does have some stands of old growth forest.
However, in recent years, a large area of the forest on Gearhart mountain and surrounding areas have succumbed to the Mountain pine beetle, and large dead stands of Ponderosa and Lodgepole pine can be seen. 
An estimated 76 percent of Boise National Forest is forest, which is considered to be land that is capable of supporting trees on at least 50 percent of its area.
The forests are primarily coniferous evergreen forests dominated by ponderosa pine, lodgepole pine, and Douglas-fir at lower elevations and Engelmann spruce, subalpine fir, and whitebark pine at higher elevations.
Grand fir and western larch can be found in the northern part of the forest where there are moister conditions.
Quaking aspen, a deciduous tree, can be found in stands among conifers throughout the forest at elevations from to .
Non-forested areas occupy 23 percent of the forest, primarily on south-facing slopes, lower elevations in the forest’s southern latitudes, or high-elevation areas.
These non-forested areas are those dominated by grasses, forbs, or shrubs.
The warmest, driest forested areas occur at elevations from to and on south-facing slopes that are steep and dry.
These forests are dominated by ponderosa pine, which persists due to the presence of frequent non-lethal fires.
Douglas-fir occasionally occur in these forests alongside ponderosa pine, particularly at higher elevations.
The understory consists of bluebunch wheatgrass, Idaho fescue, mountain snowberry, and bitterbrush in drier areas and elk sedge, pinegrass, white spirea, mallow ninebark, and common snowberry at higher elevations.
In cool, moist areas ranging from to , Douglas-fir dominates.
Lodgepole pine and quaking aspen may be found alongside Douglas-fir in cooler areas, particularly where frost pockets form.
Understories in this forest type are dominated by mountain maple, mountain ash, and blue huckleberry in moister areas and white spirea, common snowberry, elk sedge, and pinegrass in drier areas.
Between elevations of and in the moist northern parts of the forest, grand fir dominates and western larch is found in early successional areas.
Understories are also made of mountain maple, mountain ash, blue huckleberry, and mallow ninebark.
Subalpine fir dominates at elevations from to along with mountain maple, serviceberry, Scouler’s willow, Sitka alder, menziesia, Utah honeysuckle, and mountain ash.
Lodgepole pine can dominate in cold, dry areas at elevations from to .
Understory vegetation can be sparse but include grasses, forbs, and huckleberries and grouse whortleberry.
Fires in lodgepole pine-dominated forests are typically lethal to trees and understories alike.
At the highest elevations, forests consist of subalpine fir alongside whitebark pine and Engelmann spruce.
Grasses and forbs tolerant to freezing throughout the growing season occupy the understory.
In non-forested areas at lower elevations with little precipitation, sagebrush typically dominates.
Species that commonly occur with sagebrush include Sandberg bluegrass, wild onion, milk vetches, bluebunch wheatgrass, bitterbrush, gray horsebrush, green rabbitbrush, and others.
In riparian areas below , trees such as black cottonwood, narrowleaf cottonwood, thinleaf alder, water birch, mountain maple can be found with shrubs such as chokeberry and willows.
Treeless riparian areas are dominated by willows along with thinleaf alder, chokecherry, mountain maple, shrubby cinquefoil fireweed, saxifrage, and grasses.
Sacajawea’s bitterroot ("Lewisia sacajaweana") is a plant species endemic to central Idaho, including parts of Boise National Forest, being found nowhere else in the world.
Only about two dozen populations of the plant are known to exist, and three-quarters of the populations are in Boise National Forest.
It is usually found at elevations ranging from to above sea level and produces white flowers shortly after snowmelt.
The forest contains habitat capable of supporting Ute lady’s tresses, a plant listed as threatened under the Endangered Species Act. 
The Cold Wet Pumice Plateau Basins ecoregion includes Sycan Marsh, Klamath Marsh, and La Pine Basin, which are surrounded by the Pumice Plateau but have distinct vegetation and topography.
At an elevation of 4100 to 5200 feet (1250 to 1585 m), they function as cold air catch-basins during the winter, which results in lower minimum temperatures.
Soils in the basins have water tables at or near the surface for significant periods of the year, in contrast to the soils of the Pumice Plateau.
The La Pine Basin is underlain by thick lacustrine deposits that exhibit high groundwater levels during the spring snowmelt.
It supports lodgepole pine stands, as well as wet, forested wetlands of lodgepole pine, willow, and aspen.
Scattered ponderosa pine shrub forest is found on the driest soils.
The Sycan and Klamath marshes support wetland meadow vegetation, including tules and tufted hairgrass.
Marshes, lakes, reservoirs, wetland forests, and medium and low gradient rivers provide important habitat for migratory waterfowl.
The region covers in Oregon, a mixture of private and public lands, including the Deschutes and Fremont-Winema National Forests and the Klamath Marsh National Wildlife Refuge. 
The beetles infest the lodgepole pine, which makes up 8% of Colorado’s of forests.
Lodgepole pines are found at elevations between 6,000-11,000 feet.
The last notable outbreak occurred in Colorado in the 1970s but was significantly less detrimental than the current infestation.
Of the of lodgepole pine, about 70% of them have been decimated.
High temperatures have allowed beetle infestations at higher elevations.
According to a recent study, pine beetles have expanded their infestation by .
The infestation is primarily concentrated in the state’s northern mountains.
The infestation has been moving north and east from the Granby and Winter Park area towards Larimer County.
It is estimated that beetle kill will leave behind a deforested area the size of Rhode Island. 
The Lodgepole Needle Miner ("Coleotechnites milleri") is an insect, endemic to the upper Tuolumne and Merced River watersheds of Yosemite National Park and one small headwaters drainage of the San Joaquin River (Sierra National Forest).
It lives mostly within the needles of Lodgepole Pine for two years, emerging as a little gray moth for a few weeks in July of odd-numbered years.
This keeps any predators from becoming effective control agents and allows populations to escalate rapidly.
While regular prehistoric outbreaks of Lodgepole Needle Miners have been confirmed through dendrochronology, historic records document outbreaks from 1903 to 1921, 1933 to 1941, and 1947 to 1963.
Extensive stands of "Ghost Forest" and jackstrawed trees are still conspicuous throughout Sierra Nevada.
Annual monitoring of Lodgepole Needle Miner density began in 1966, and 28 permanent plots are scattered north of the Cathedral Range.
The current outbreak began in 1973 and has been sweeping around the south side of the Cathedral Range, arriving at Sunrise High Sierra Camp in 2001.
The Ghost Forest which was evident at the crest between Tenaya Lake and Tuolumne Meadows in the late 1970s was noticeably reforested by 2000.
Lodgepole Needle Miner defoliation currently extends over approximately 40,000 acres (162 km²), with nearly 10,000 acres (40 km²) of low to high mortality each year.
While lightning fires are frequent in lodgepole pine communities, they usually remain small, with estimated fire return intervals at Yosemite National Park that are long (relative to most other forest types).
Thus, fire suppression activities are thought to have had little influence upon species composition, structure, fuels, and natural processes in lodgepole forests.
Also, in comparison with Rocky Mountains lodgepole pine forests, fire plays a smaller role, and so the needle miner assumes greater importance in lodgepole pine forest population dynamics in the Sierra Nevada.
However, Rocky Mountain lodepole forest dynamics are also heavily influenced by insect outbreaks, primarily bark beetles.