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This study focuses on identifying critical forest edge habitats against development pressures by conducting habitat suitability mapping and assessing conservation values through habitat and landscape matrix analysis. The goal is to promote good governance and corporate stewardship through impact assessment in establishing a conservation area. The research area is SeongNam City, Korea, with a specific focus on forest edge and forest-agriculture ecotone habitats. The study includes methods such as identifying target species like the Woodpecker, analyzing landscape matrix, and evaluating conservation values of forest edge areas. Results include habitat suitability maps, effectiveness evaluations, and conservation value assessments of forest edge, aiming to provide scientific support for preserving these critical areas. The study emphasizes the importance of considering forest edge conservation in development projects to protect forest ecosystems and biodiversity.
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IAIA : Growth, Conservation & Responsibility: Promoting Good Governanceand Corporate Stewardship through Impact Assessment Establishing a Conservation Area by Habitat and Landscape Matrix Analysis Eun Joo YOON, Dong Kun LEE Seoul National University, Korea
Contents Ⅰ. Introduction Ⅱ. Methods Ⅲ. Results Ⅳ. Conclusions & Discussion
1. Background Ⅰ.Introduction • Biodiversity in forest edge is high because this area interacts with diverse ecosystems. • Particularly, ecotone connected to agriculture or grassland is important for many forest species requiring ‘open area’ as the part of habitat. • Forest edge could be buffer area of forest core. • However, development pressure is high especially at forest edge. • In many development projects, considering the conservation value of forest edge is insufficient. • Development of forest edge could harm not only itself but also diverse ecosystems interact with it.
2. Objectives Ⅰ.Introduction • The objective of this study is to offer the scientific basis for conserving critical area of forest edge against the development pressure. • For this purpose, • -First, habitat suitability map is conducted. • -Second, the critical ecotone is extracted. • -Finally, comprising the ecotone in the habitat suitability • map, conservation value of forest edge is assessed.
2. Objectives Ⅰ.Introduction This study is focused on Forest edge & Forest-agriculture ecotone forest-agriculture ecotone Identifying the habitat of forest edge species Analyzing Landscape matrix Conservation value assessment of forest edge Forest edge Core area of the forest Agriculture area
1. Study area Ⅱ.Methods Study area : SeongNam City, GyeongGi-do, Korea • Administrative district • Planned city for the population decentralization in the Metropolitan area. • Since the year 1989, this city have been developed dramatically
1. Study area Ⅱ.Methods Study area : SeongNam City, GyeongGi-do, Korea • Selection Conditions • 1: Almost forest area within administrative boundary is under forest edge. • 2: Existing conservation area is limited core area of forest. • 3: The gradation of urban-agriculture-forest is represented well. • 4: There are critical habitats of 55 bird species in this gradation. existing conservation area
2. Target species Ⅱ.Methods Dendrocpos Kizuki(Woodpecker) http://www.animalpicturesarchive.com/ • Selection Conditions • High recognition • Definite habitat • High habitat requirement • Ecological Guild • Hole-nesting guild • Canopy-foraging guild
3. Methods Ⅱ.Methods • Parus major / Parus ater / Parus barius / Parus palustris / Sitta europaea Factors Selection of target species Guild of target species Survey data** DBH* Vegetation Age* Inventory point of other species Inventory point of Dendrocpos Kizuki • Calculating the overlap frequency of the specific ranges selected (ArcGIS9.2) NDVI Landsat Effectiveness evaluation Habitat characteristic analysis Habitat suitability map Vegetation Type* • Calculating the number of inventory points captured by Each grade of habitat suitability map • (ArcGIS9.2) • Intersect analysis(ArcGIS9.2) Elevation • Selecting the specific range of each factorsin which • more than 70% of target species is captured. (SPSS / ArcGIS9.2) Digital map Distance from stream • Mapping the length of forest-agriculture ecotone using “feature density function” • Comprising Ecotone length in habitat suitability map(ArcGIS9.2) Patch size Land cover map* Conservation value assessment of forest edge • Literature review *Ministry of environment **SeongNam Length of forest-agriculture ecotone
1. Habitat suitability map Ⅲ.Results Factors • 1: DBH • 2: Vegetation age • 4: Vegetation type • 3: NDVI
1. Habitat suitability map Ⅲ.Results Environmental factors • 5 : Elevation • 6 : Distance from stream • 7: Patch size
1. Habitat suitability map Ⅲ.Results The selected grades of each factors *Original grades of the data is applied
1. Habitat suitability map Ⅲ.Results Result01: Habitat suitability map Grade1 Grade2 Grade3 Grade4 Grade7 Grade5 Grade6
2. Effectiveness evaluation Ⅲ.Results The number of other species inventory points captured by each value *the number of inventory points
2. Effectiveness evaluation Ⅲ.Results The Portion of other species inventory points captured by 5,6,7 grades
3. Conservation value of forest edge Ⅲ.Results Forest-agriculture ecotone • Extracting forest-agriculture ecotone • Mapping the length of the ecotone by 200mgrid • The longer length of ecotone is, the more interaction between ecosystems is caused. • The forest patches larger than 2ha(MVA) are comprised in this analysis
3. Conservation value of forest edge Ⅲ.Results Result02: comprising ecotone length in result01 • Only the grids where ecotone length is longer than 200m(grid size) are comprised in habitat suitability map. *portion(%)
3. Conservation value of forest edge Ⅲ.Results Comparing result02 with result01 Result02 Result01
1. Conclusions & discussions • Based on seven factors, habitat suitability map of target species is conducted -Applying Focal species conservation to forest edge is distinguished point. -High value of this map is distributed in forest edge. -This approach offer simple tool to identify habitat area of target species. • The effectiveness of habitat suitability map is evaluated. -The 5,6,7 grades of habitat suitability map indicate high representation for other species of Hole nesting and canopy foraging guild. -It should be evaluated whether it could be representative of the other forest edge species
1. Conclusions & discussions • The length of forest-agriculture ecotone is comprised in conservation value assessment. -Only the grids where ecotone length longer than 200m(grid size) are extracted in this study. -However classifying the ecotone length as the degree of interaction is required in future research. • Additional conservation area could be established in forest edge based on this result. -the result of this study could be supplementary data for existing conservation area such as DGN or Ecological Naturalness.
IAIA : Growth, Conservation & Responsibility: Promoting Good Governanceand Corporate Stewardship through Impact Assessment Thank you for your attention!!
