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- Land Cover Classification, Deforestation Patterns Analysis and Field Survey -

27th Annual Conference: International Association for Impact Assessment. Deforestation Patterns Analysis of the Baekdudaegan Mountain Range. - Land Cover Classification, Deforestation Patterns Analysis and Field Survey -. 7 th June, 2007. Won-Kyong SONG*, Dong-Kun LEE.

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- Land Cover Classification, Deforestation Patterns Analysis and Field Survey -

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  1. 27th Annual Conference: International Association for Impact Assessment Deforestation Patterns Analysis of the Baekdudaegan Mountain Range - Land Cover Classification, Deforestation Patterns Analysis and Field Survey - 7th June, 2007 Won-Kyong SONG*, Dong-Kun LEE Seoul National University, Korea

  2. Contents Ⅰ. Introduction 1. Background and Objectives Ⅱ. Scope and Methodology 1. Scope 2. Methods Ⅲ. Results and Discussion 1. Land Cover Classification 2. Temporal Change Analysis 3. Deforestation Patterns Analysis 4. Field Survey of Deforestation Regions Ⅳ. Conclusion

  3. Ⅰ. INTRODUCTION

  4. Background Ⅰ. Introduction 1. Background and Objectives Significance of Baekdudaegan Mountain Range • Runs from Mountain Baekdu to mountain Jiri which has been considered as a sentimental foundation of Korea • Symbol of Korean Peninsula • Back bone of Biosphere • Main Axis of Korean Consciousness

  5. Background Ⅰ. Introduction 1. Background and Objectives No quantitative researches about Baekdudaegan Deforestation areas • Understanding of importance of Baekdudaegan Mountain Region as a sentimental and ecological foundation of Korea • Recently, Increasing deforestation of Baekdudaegan Mountain Region • Considering a broad area of Beakdudaegan Mountain Region and temporal deforestation patterns, we need to analysis the region more widely. • We need to analyze quantitatively about deforestation and sustainable management, using satellite images and quantitative methods.

  6. Objectives Ⅰ. Introduction 1. Background and Objectives • Analysis of deforestation areas and spatial patterns of Baekdudaegan Mountain Region • Fundamental study for sustainable management of Baekdudaegan Region

  7. Ⅱ. Scope and Methods

  8. BMR Boundary Provincial Park National Park Ecological Boundary Study Area and Period Ⅱ. Scope and Methods 1. Scope ▌ Study Area • Baekdudaegan Preservation Area • Length 680km, area 5,341㎢ • Administrative district : 6 provinces, 12cities, 20 counties ▌ Period of Study • The latter half of the 1980’s ~ the first half of the 2000’s (1989, 1998, 2002)

  9. Flow Chart of This Study Ⅱ. Scope and Methods 2. Methods Data Programs Landsat 5, 7 TM/ETM+ Land Cover Classification (80, 90, 00’s) Image Analyst 8.0 ArcGIS 9.0 Land Cover Classification Map Temporal Change Analysis Image Analyst 8.0 ArcGIS 9.0 Land Cover Classification Map DEM/Digital Map Deforestation Patterns Analysis of Baekdudaegan ArcGIS 9.0 Excel 2003 Field Survey of Deforestation Areas Field Survey

  10. Land Cover Classification : Data Ⅱ. Scope and Methods 2. Methods Satellite Imagery References Digital Map, Forest Map

  11. Land Cover Classification : Process Ⅱ. Scope and Methods 2. Methods Using Band 4 Masking Water boundary Band Combination Supervised Classification Unsupervised Classification Process Result

  12. Temporal Change Analysis Ⅱ. Scope and Methods 2. Methods

  13. Deforestation Patterns Analysis Ⅱ. Scope and Methods 2. Methods ▌ Temporal Deforestation Patterns Analysis by Spatial distribution Topographical Patterns • Altitude : Divided by each 200m • Slope : Divided by each 10 degrees • Aspect : 8 aspects Spatial Patterns • Distance from Roads : Divided by each 200m • Distance from Stream : Divided by each 200m • Distance from Marugeum (Baekudaegan Ridgeline) : Divided by each 200m

  14. Field Survey of Deforestation Areas Ⅱ. Scope and Methods 2. Methods ▌ Field Survey of Representative Deforestation Areas • Purpose • - Field Survey of Deforestation Areas • - Problems Analysis of Deforestation Areas • Sites Selection - The Largest Deforestation Region in the Baekdudaegan Preservation Area in 10% - Deforestation Regions : Built_up, Agriculture, Barren, Grass Areas • Field Survey Schedule - 21th May, 2004 ~ 23th May, 2004 - 11th November, 2004 ~ 13thNovember, 2004 • Methods - Field survey about land use, land cover and deforestation patterns - Interview with residents, taking photographs

  15. Ⅲ. Results and Discussion

  16. 1980’s 1990’s 2000’s Built_up Agriculture Forest Grass Wetland Barren Water Land Cover Map Ⅲ. Results 1. Land Cover Classification

  17. Land Cover Classification Results Ⅲ. Results 1. Land Cover Classification

  18. Existing Deforestation Area Forest 90_Built_up 90_Agriculture 90_Grass 90_Barren 90_Water 80_Built_up 80_Agriculture 80_Grass 80_Barren 80_Water Temporal Change Analysis Ⅲ. Results 2. Temporal Change Analysis Existing Deforestation Area Forest 90_Built_up 90_Agriculture 90_Grass 90_Barren 80_Built_up 80_Agriculture 80_Grass 80_Barren Built_up Agriculture Forest Grass Wetland Barren Water

  19. Temporal Change Analysis Results Ⅲ. Results 2. Temporal Change Analysis

  20. Ⅲ. Results 3. Deforestation Patterns Analysis 3. Deforestation Patterns Analysis

  21. Ⅲ. Results 3. Deforestation Patterns Analysis ▌ Deforestation Patterns : Altitude 1980’s 1980-1990’s 1990-2000’s ~ ~ ~

  22. Ⅲ. Results 3. Deforestation Patterns Analysis ▌ Deforestation Patterns : Slope 1980’s 1980-1990’s 1990-2000’s

  23. Ⅲ. Results 3. Deforestation Patterns Analysis ▌ Deforestation Patterns : Aspect 1980’s 1980-1990’s 1990-2000’s NNE NEE SEE SS E SSW SWW NSS NNS NNE NEE SEE SSE SSW SWW NSS NNS NNE NEE SEE SSE SSW SWW NSS NNS NNE NEE SEE SSE SSW SWW NSS NNS NNE NEE SEE SSE SSW SWW NSS NNS NNE NEE SEE SSE SSW SWW NSS NNS

  24. Ⅲ. Results 3. Deforestation Patterns Analysis ▌ Deforestation Patterns : Distance from Road 1980’s 1980-1990’s 1990-2000’s

  25. Ⅲ. Results 3. Deforestation Patterns Analysis ▌ Deforestation Patterns : Distance from Water 1980’s 1980-1990’s 1990-2000’s

  26. Ⅲ. Results 3. Deforestation Patterns Analysis ▌ Deforestation Patterns : Distance from Marugeum 1980’s 1980-1990’s 1990-2000’s

  27. Ⅲ. Results 4. Field Survey Field Survey Sites and Deforestation Types

  28. Built-up Ⅲ. Results 4. Field Survey • Built-up areas are composed of existing rural towns and roads, collective service-facilities areas. • Built-up areas have serious problems of forest discontinuation with point, line, and surface forms. • There are increasing crop fields and orchards close by built-up areas, especially hill areas deforestation is being aggravated.

  29. Agricultural Area Ⅲ. Results 4. Field Survey • Agriculture areas are composed of existing fields close by rural town and highland vegetable growers. • There are increasing small-scale cultivation, vegetable garden and orchards close by rural town. • Highland fields are increasing in Gangwon-do and KyungSangbuk-do by agricultural policy of local self-government. • In Highland fields, the use of pesticides and fertilizers has been increased to maintain soil fertility and improve crop productivity.

  30. Grassland Ⅲ. Results 4. Field Survey • Grassland areas are composed of pastures, natural grasslands and lands in fallow, cemetery parks et al. • Pasture areas show the largest deforestation patterns in Baekdudaegan Conservation Region.

  31. Bare Land Ⅲ. Results 4. Field Survey • Bare land areas are composed of mining districts, campsites, slopes of road and facilities. • The most serious deforestation form is bared areas by mining and slopes • Slopes of roads are serious problem causing continuous soil erosion, topographic changes, and discontinuity of forest habitats.

  32. Ⅳ. Conclusion

  33. Ⅳ. Conclusion Conclusion • The land use types in the Baekdudaegan Preservation Region were largely classified into urbanized/built-up area (residential, industrial, commercial, recreational, and public facility areas) including transportation area (expressways, national highways, and trails), agricultural area (rice paddies, agricultural fields, orchards, and so on), and bare land (mining areas). • The Results show deforestation areas are gradually increasing after 1980’s by detection methods of remote sensing and land cover classification. • The deforestation areas after 1990’s are larger than the deforestation areas after 1980’s, especially agricultural and built-up areas are relatively more accelerative deforesting.

  34. Ⅳ. Conclusion Conclusion • The largest deforestation area in the Baekdudaegan was found in where elevation is rower than 400m, slope below 20 degree, the areas less than 200m from roads and streams, and the deforestation areas located in more serous areas after 1980’s. • The central and local governments should take the proactive initiative to restore the deforested area in a long-term gradual manner by operating both institutional and policy-level strategies.

  35. Thank you for attention

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