A discrete global grid of photointerpretation

McCollum, Joseph M.; Cochran, Jamie K.; Rose, Anita K.

doi:10.2737/srs-rp-44

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…This map was created by mapping all defined forest areas according to the FRA2000 definition [7]. A hexagonal grid of one square kilometer was created for the entire study area, which was used instead of the classic square or rectangular grid because it provides a better quality for photointerpretation [36]. The TOFs definition of the Italian National Forest Inventory [21] was used: small wooded land (SWL) with an area between 500 and 5000 square meters and linear forest formations (LFF) with a width of less than 20 m and an unspecified minimum length [37].…”

Section: Photointerpretationmentioning

confidence: 99%

Census and Dynamics of Trees Outside Forests in Central Italy: Changes, Net Balance and Implications on the Landscape

Ottaviano

Marchetti

2023

Land

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Trees outside forests (TOFs) are important landscape features that provide numerous functions (ecosystem services) that are not valued due to a lack of knowledge about these resources. The aim of this study was to evaluate the changes induced by the anthropogenic land use change in relation to their effects on TOFs. The dynamics of TOFs were examined through detailed photointerpretation mapping and characterization by land use/land cover and other environmental variables. The landscape function of TOFs and relative dynamics were analyzed, revealing landscape simplification due to the loss of TOFs, both in number and area, and a relative loss of connectivity. In 2000, TOFs accounted for 2.6% more forest area than mapped in the regional forest map; in fifteen years, about 30% of the total area has been lost, one-third of which has been converted to forest and the remainder permanently lost. The causes of the loss of TOFs are partly due to the abandonment of agricultural land, but also to the actions of farmers who remove these elements for various reasons. In protected areas (Natura 2000 network), the loss is less due to the different characteristics of land use/cover and land management.

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Section: Photointerpretationmentioning

confidence: 99%

Census and Dynamics of Trees Outside Forests in Central Italy: Changes, Net Balance and Implications on the Landscape

Ottaviano

Marchetti

2023

Land

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“…Methods McCollum et al (2008) show how to decompose the P2 grid to produce a P1 grid used in double sampling for stratification when strata weights are estimated. In similar fashion, we decomposed the EMAP grid by a factor of 27 to produce P2-sized cells.…”

Section: Introductionmentioning

confidence: 99%

The Finnish National Forest Inventory

Tomppo¹

Forest Inventory

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In this article, we describe in depth the analysis and solutions to manage the multiple coordinates of the sampling objects coming from the three different phases of the second Italian national forest inventory (Inventario Nazionale delle Foreste e dei serbatoi forestali di Carbonio [INFC]). In particular, this article describes the criteria used to determine the sample point coordinates of the first phase, the Global Positioning System (GPS) positioning procedure of the second phase, and the GPS-aided retrieval procedure of sample points during the third phase of the INFC. Because about two-thirds of the Italian territory is hilly or mountainous, with rough orography or with tree coverage, this article also provides a nationwide analysis and survey on the use of GPS technology in forest and natural environments.

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National FIA plot intensification procedure report

Blackard¹,

Patterson²

2014

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About the cover: The cover graphic illustrates FIA's sampling frame (blue hexagon) subdivided into smaller hexagons or sub-regions using the GRID method. Sub-regions are color-shaded to represent a 4x intensification level within each sampling frame. Existing FIA plots are shown as black triangles, randomly placed intensified plots are gold stars, and the labels identify the corresponding intensity number for each intensified plot. Those sub-regions that will not receive a new intensified plot are assigned the number 0. Cover artwork by Jock A. Blackard. AbstractThe Forest Inventory and Analysis (FIA) program of the U.S. Forest Service (USFS) measures a spatially distributed base grid of forest inventory plots across the United States.The sampling intensity of plots may be increased in some regions when warranted by specific inventory objectives. Several intensification methods have been developed within FIA and USFS National Forest Systems regions; however, a national standard routine for plot intensification does not exist. This report examines eight candidate intensification methods by a developed set of evaluation criteria, and based on those results proposes that FIA adopt the GRID method as its national plot intensification procedure. It is also suggested that the current version of the GRID method be updated by converting it to an ESRI ArcGIS add-in tool.

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A discrete global grid of photointerpretation

Cited by 3 publications

References 5 publications

Census and Dynamics of Trees Outside Forests in Central Italy: Changes, Net Balance and Implications on the Landscape

Census and Dynamics of Trees Outside Forests in Central Italy: Changes, Net Balance and Implications on the Landscape

The Finnish National Forest Inventory

National FIA plot intensification procedure report

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