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Forest Inventory and Analysis At the Northeastern Research Station Tracking the Diverse and Dynamic Forests in the Northeastern States. United States Department Of Agriculture. Forest Service Northeastern Research Station. FIA is the Nation's forest census . .

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Forest inventory and analysis at the northeastern research station

Forest Inventory and Analysis

At the Northeastern Research Station

Tracking the Diverse and Dynamic Forests in the Northeastern States.

United States

Department

Of Agriculture

Forest Service

Northeastern

Research Station


Fia is the nation s forest census

FIA is the Nation's forest census. 

  • Whether you’re interested in wildlife habitat, evaluating sustainability of forestry practices, or studying global warming and need to estimate the uptake of carbon dioxide by forests, you need good data and information to analyze and make decisions. The FIA project is a response to that need.

  • FIA is a National program that, conducts and maintains comprehensive inventories of the forest resources in the United States.


The northeast fia unit inventories the forest in 13 states

PERCENTAGE OF LAND IN FOREST

90%

AND NUMBER OF FIA PLOTS

3327

78%

997

89%

967

62%

62% 845

5091

60%

522

59% 225

59%

4839

30%

45% 805

4415

30% 208

78%

41% 1060

2600

The Northeast FIA Unit Inventories The Forest In 13 States


Why is fia important

Why is FIA Important?

  • FIA provides objective and scientifically credible information on key forest ecosystem processes:

  • how much forest there is,

  • what it looks like,

  • whether the forest area is increasing or decreasing,

  • whether we are gaining or losing species,

  • and how quickly trees are growing, dying, and being harvested. :


How an inventory is conducted

How an inventory is conducted.

  • The FIA project does not count every tree in the Northeast. Instead, they use a scientifically designed sampling method. Data’s collected in three phases, with each phase taking a closer look at the forest.


How the inventory is conducted

How the inventory is conducted.

  • The FIA project does not count every tree in the Northeast. Instead, they use a scientifically designed sampling method. Data’s collected in three phases, with each phase taking a closer look at the forest.


Phase 1 p1

Phase 1 (P1)

  • Phase 1 (P1) uses satellite imagery to classify the entire area of a state into forest and nonforest land cover categories. These estimates are used to statistically expand the data collected in phase 2 (P2) to the state or individual county level.


Phase 2

Phase 2

  • Phase 2 is a network of ground plots that are visited by trained field crews. This network of permanently established plots is on a grid spaced approximately 3.1 miles apart across the entire country.


Forest inventory and analysis at the northeastern research station

Five-Year Panel

Year One

Year Two

Year Three

Year Four

Year Five

1

2

3

4

5

3

1

4

5

1

2

3

1

2

3

4

5

3

1

4

5

1

2

3

Phase Two – Sampling Frame

Interpenetrating Design

Sample Intensity = 1 sample location

per 5,933 acres of land

Inventory Cycle Length = Five years or

20 percent of the sample locations

each year.


P2 p3 plot design

Subplot 2

Subplot:

24.0 ft radius

120.0 ft

Subplot 1

Microplot:

6.8 ft radius

Annular plot:

Subplot 4

Subplot 3

58.9 ft radius

P2 & P3 Plot Design


On all our field plots we gather measurements that describe

On all our field plots, we gather measurements that describe

  • General land use

  • Tree diameter, height, damage, amount of rotten or missing wood, and tree quality

  • Counts of tree regeneration


Forest inventory and analysis at the northeastern research station

  • General stand characteristics such as forest type, stand age, and disturbance

  • Estimates of growth, mortality, and removals (determined by revisiting plots from the previous time period)


Phase 3

One out of every 16, P2 plots, is chosen to be a phase 3 (P3) plot. Phase 3 plots are only measured during the summer

Phase 3

  • Crown condition

  • Soil condition

  • Vegetation diversity and structure

  • Down woody debris

  • Lichen communities

  • Ozone injury

  • Tree damage


Data access and analysis

Publications

Accessing data on Web

Spatial Data Service Center

Call us with special requests

Using Mapmaker application on Web

Data Access and Analysis


Major trends in forest resource and other interesting results

Major Trends in Forest Resource and Other Interesting Results


Forest inventory and analysis at the northeastern research station

Percent Forest

0 - 20

20 - 40

40 - 60

60 - 80

80 - 100

Percentage of Land in Forest by County


Forest inventory and analysis at the northeastern research station

Percent Public Ownership

0 - 10

10 - 20

20 - 30

30 - 40

> 40

Percentage of Forest Land in Public Ownerships


Change in forest land in the chesapeake bay watershed by region

Change in Forest Land in the Chesapeake Bay watershed by Region

Currently forest land totals 26.5 million acres in the watershed, +0.7% from previous estimates.


Timberland area by stand size class in the chesapeake bay watershed

Timberland area by stand-size class in the Chesapeake Bay Watershed


The volume of large trees continues to increase

The volume of large trees continues to increase.


Portion of total growing stock volume composed of oak species current and previous inventories

Portion of Total Growing-stock Volume Composed of Oak Species, Current and Previous Inventories


Forest inventory and analysis at the northeastern research station

Oaks are an important species for wildlife and lumber in PennsylvaniaRecent inventories show a decline in the number of small oaks and an increase in large diameter oaks.


Percentage of oak stems by diameter class in the chesapeake watershed

Percentage of Oak Stems by Diameter Class in the Chesapeake Watershed


Forest inventory and analysis at the northeastern research station

Volume per acre

(Cubic feet)

< 1500

1500 - 2000

2000 - 2500

2500 - 3000

> 3000

Average Volume of Trees Per Acre of Timberland


Forest inventory and analysis at the northeastern research station

The Survey Instrument

  • Woodland characteristics

  • Ownership objectives

  • Forest management and education

  • Concerns and issues

  • Future intentions

  • Demographics


Number of family forest owners in the chesapeake bay watershed by size of ownership 2003

Number of family forest owners in the Chesapeake Bay watershed by size of ownership, 2003


Acres of family forest owners in the chesapeake bay watershed by size of ownership 2003

Acres of family forest owners in the Chesapeake Bay watershed by size of ownership, 2003


Forest inventory and analysis at the northeastern research station

Percentage of numbers of owners and acreage by size of ownerships for family owned forests in the Chesapeake watershed, 2003


Forest inventory and analysis at the northeastern research station

Area and number of family owned forests in the Chesapeake Bay watershed with written management plan, 2003


Land tenure of family forests in the chesapeake bay watershed by years of ownership 2003

Land tenure of family forests in the Chesapeake Bay watershed by years of ownership, 2003

Percent of Acreage

Years of Ownership


Age of family forest owners in the chesapeake bay watershed 2003

Age of family forest owners in the Chesapeake Bay watershed, 2003

Percent of Respondents

Age of Owner (Years)


Reasons rated as important for owning forest land 2003

REASONS RATED AS IMPORTANT FOR OWNING FOREST LAND, 2003


Forest inventory and analysis at the northeastern research station

COMPONENTS OF VOLUME CHANGE, 1987-99, MARYLAND

 Gross Growth – Mortality +/- Change in cull = Net Growth

 Net Growth – Removals = Net Change


Forest inventory and analysis at the northeastern research station

Rich Widmann

USDA Forest Service

Forest Inventory & Analysis

11 Campus Boulevard, Suite 200

Newtown Square, PA 19073

E-mail [email protected]

Office 610-557-4051


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