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Çѱ¹È¯°æ»ýÅÂÇÐȸ / v.15, no.3, 2001³â, pp.276-285
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ÀϺ» ¾Æ½Ã¿À(ðëÚ) ÔÞÎÎߣò¢æ´ÀÇ »ï¸²È²Æó¿Í »ï¸²È¯°æ º¹±¸»ç¾÷¿¡ °üÇÑ ºÐ¼®
( Forest Environment Degradation and Rehabilitation of Copper Mine Area in Ashio, Japan ) |
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This report surveyed degradation of forest environment and rehabilitation in Ashio of Japan. Since 1880, a large scale forestry in this area has been destroyed by sooty smoke, and the local government invested heavily to rehabilitate the damaged forestry and denuded mountains. These degradations are due to complex operations, such as sulfurous acid gas from copper refinery, forest fires, steep slope and disadvantageous climate. The rehabilitation works on degraded forestry(2,399ha) were undertaken by tree planting fur three years from 1897. However, forest degradation and disasters were continued, and the total damaged areas were about 2,400~3,000ha in 1956. A Manual labor method, a Helicopter method and also Combination of manual labor and helicopter method had been adopted to rehabilitation works from 1945 to 1996, while 828.19ha of the degraded mountains was rehabilitated. Total investment for those projects was 80 billion yen. A debris control dam, a soil arresting structure, a vegetation-block, a vegetation sack measures and tree planting have implemented significantly fur the method of rehabilitation. An objective of manual labor works is a complete rehabilitation on each place through 3 stage working. The revived green areas accounted fur 49% of the total, and the entire afforest areas are less than 10%. In coming 25 years, an amount of 21.3 billion yen will be invested to rehabilitate 564ha of degraded mountain lands. However, it is impossible to estimate that how long it will take until the whole degraded mountain lands are completely rehabilitated. Rehabilitation works in Ashio may be applicable to environmental restoration and revegetation in the abandoned coal-mine lands of Korea. |
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¾ÆÈ²»ê°¡½º;»ï¸²È²Æó;º¹±¸°ø»ç;SULFUROUS ACID GAS;FOREST DEGRADATION;REHABILITATION; |
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Çѱ¹È¯°æ»ýÅÂÇÐȸÁö / v.15, no.3, 2001³â, pp.276-285
Çѱ¹È¯°æ»ýÅÂÇÐȸ
ISSN : 1229-3857
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920904862)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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