Spatial information for scheduling core area production in forest planning

2006 ◽  
Vol 36 (1) ◽  
pp. 23-33 ◽  
Author(s):  
Yu Wei ◽  
Howard M Hoganson
Keyword(s):  
Spatial Information ◽  
Core Area ◽  
Forest Planning ◽  
Influence Zone ◽  
Site Specific ◽  
Wildlife Species ◽  
Raster Cell ◽  
Surrounding Areas ◽  
Scheduling Models ◽  
Potential Area

Forest core area is the portion of the forested landscape that is free from edge effects from surrounding areas. Forest core area is important for specific plant communities and wildlife species. Identifying spatial interdependencies of site-specific management decisions is an important step for recognizing core area production in forest management scheduling models. A forest-wide map layer of influence zones can be used to identify the interdependencies. Each influence zone is a potential area for producing core area. Each is unique in terms of the specific combination of management units that interact to influence core area production. A raster-based approach is presented for identifying influence zones and estimating their area. Tests considered the need for precision in terms of the size of the raster cells for accurately identifying influence zones and estimating their size. Tests, using a 100 m buffer width for defining core area, show that scheduling results were relatively insensitive to gains in precision from using raster cell widths less than 30 m.

scholarly journals Identification of Potential Eco-tourism Site Suitability Using AHP and GIS, A Case of Hugumburda Forest and its Surrounding Areas, Ethiopia

2018 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Land Use ◽  
Information System ◽  
Land Use Land Cover ◽  
Soil Slope ◽  
Ahp Method ◽  
Forest Reserve ◽  
Suitability Map ◽  
Resource Inventory ◽  
Surrounding Areas ◽  
Potential Area

The main objective of the study is to identify the potential ecotourism sites in Hugumburda forest reserve area, Tigray, Ethiopia by using Geographic information system (GIS) and AHP. This work was assessed the potential suitable areas for ecotourism based on land use land cover, soil, slope, elevation, scenic attractiveness, rainfall and temperature. These factors were selected according to the professional expert’s opinions. First, a resource inventory and a list of ecotourism criteria were developed using the AHP method on IDRSI. At the next stage GIS techniques were used to measure the ranking of different sites according to the set criteria and thus identify those with the “best‟ potential. Subsequently, the ecotourism potential suitability map for ecotourism was created, based on the linear combination of the criteria and factors with their respective weights. The degree of suitability of each factor was classified as highly suitable, moderately suitable, less suitable and not suitable for ecotourism. The result showed highly suitable for ecotourism potential area accounts for 18.92% (9513.65 ha), moderately suitable accounts 17.65% (8871.82ha), less potential areas 25.54% (12841.20 ha) and 37.88% (19044.35 ha) no potential area in and around the Hugumburda forest area. In general, the study was attempted to identify the ecotourism suitability of the study area.

scholarly journals ROOFING ASSESSMENT FOR ROOFTOP RAINWATER HARVESTING ADOPTION USING REMOTE SENSING AND GIS APPROACH

2018 ◽  
Vol XLII-4/W9 ◽  
pp. 129-132 ◽  
Author(s):  
N. A. W. M. Radzali ◽  
H. Z. M. Shafri ◽  
M. Norman ◽  
S. Saufi
Keyword(s):  
Remote Sensing ◽  
Quality Assessment ◽  
Spatial Information ◽  
Rainwater Harvesting ◽  
Sole Source ◽  
Remote Sensing And Gis ◽  
Satellite Systems ◽  
Rooftop Rainwater Harvesting ◽  
High Resolution Satellite Imagery ◽  
Potential Area

<p><strong>Abstract.</strong> Rooftop rainwater harvesting refers to the collection and storage of water from rooftops whereby the quality of harvested rainwater depend on the types of roof and the environmental conditions. This system is capable to support the water supply in almost any place either as a sole source or by reducing stress on other sources through water savings. Remote sensing and GIS have been widely used in urban environmental analysis. Thus, this study aimed to develop the roofing layer in order to assess the potential area for rooftop rainwater harvesting adoption by integrating remote sensing and GIS approach. An urban area containing various urban roofing materials and characteristics was selected. High resolution satellite imagery acquired from WorldView-3 satellite systems with 0.3<span class="thinspace"></span>m of spatial resolution was used in order to obtain spectral and spatial information of buildings and roofs. For quality assessment, the physical and chemical parameters of the rooftop harvested rainwater were performed according to the Standard Tests for Water and Wastewater. The potential area for rooftop rainwater harvesting adoption can be identified with the detail information of the rooftops and quality assessment in geospatial environment.</p>

Scheduling forest core area production using mixed integer programming

2007 ◽  
Vol 37 (10) ◽  
pp. 1924-1932 ◽  
Author(s):  
Yu Wei ◽  
Howard M. Hoganson
Keyword(s):  
Integer Programming ◽  
Mixed Integer Programming ◽  
Core Area ◽  
Mixed Integer ◽  
Test Cases ◽  
Spatial Constraints ◽  
Influence Zone ◽  
Scheduling Model ◽  
Real World Applications ◽  
Numerous Test

Core area, the area of mature forest protected by a buffer area from edge effects of surrounding habitats, is an important spatial measure describing forest ecological conditions. Three alternative mixed integer programming (MIP) formulations are presented for explicitly scheduling core area production in a forest management scheduling model. Formulations utilize detailed data preprocessing that develops a set of influence zones. Each influence zone identifies an area of the forest that can produce core area. Each zone is influenced by a unique combination of management units (stands) of the forest. The assumed width of the buffer surrounding core area affects both the number of zones in the forest and the number of stands associated with each zone. Numerous test cases were applied, varying the MIP formulation used to describe core area production, the assumed buffer for core area (50 or 100 m), and the set of additional forest-wide constraints to control harvest levels and core area production levels over time. Solution times varied substantially between the alternative MIP formulations. Solution times were substantially less for the formulation that used more, but simpler, spatial constraints. Solution times for large test cases suggest that real-world applications are likely feasible.

Maintenance of flying squirrel habitat and timber harvest: a site-specific spatial model in forest planning calculations

2006 ◽  
Vol 22 (2) ◽  
pp. 243-256 ◽  
Author(s):  
Eija Hurme ◽  
Mikko Kurttila ◽  
Mikko Mönkkönen ◽  
Tero Heinonen ◽  
Timo Pukkala
Keyword(s):  
Spatial Model ◽  
Timber Harvest ◽  
Forest Planning ◽  
Site Specific ◽  
Flying Squirrel ◽  
A Site
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