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尾瀬ヶ原湿原・中田代の植生回復 : 50年前と現在
鈴木, 邦雄;矢ケ崎, 朋樹;吉田, 馨;丹野, 夕輝;鈴木, 伸一
Permalink : http://hdl.handle.net/2115/84986
JaLCDOI : 10.14943/lowtemsci.80.285
KEYWORDS : 尾瀬ヶ原;植生図;遷移;植生回復;高層湿原植生;Ozegahara;vegetation map;succession;restoration of vegetation;high moor
Abstract
50年前には踏圧による裸地化が目立っていた尾瀬ヶ原湿原の植生回復を把握するために，50年前の植生図と現在の植生図を用いて、メッシュ法によって中田代十字路付近の植生を比較した．その結果， 50年間で高層湿原植生が15%増加し，21%を占めていた裸地がなくなっていた．踏圧による裸地がなくなり，湿原の自然植生が回復している一方で，ヤチヤナギ，ヤマドリゼンマイの優占する群落が著しく拡大していることが判明した．
Fifty years ago, Ozegahara Mire had noticeable areas of bare land due to human trampling, and so to study whether vegetation restoration had taken place, comparison was made of actual vegetation maps from 50 years ago and today for the area near the Nakatashiro crossroads, using the mesh method. It was found that high moor vegetation had increased by 15% and the bare land that had occupied 21% in 1970 had disappeared. The bare land due to the trampling effect has disappeared. It was also discovered that while some parts of the natural moor have been restored, there had been a remarkable expansion of the Myrica gale var. tomentosaand the Osmundastrum cinnamomeum var. fokiense-dominant communities.
Fifty years ago, Ozegahara Mire had noticeable areas of bare land due to human trampling, and so to study whether vegetation restoration had taken place, comparison was made of actual vegetation maps from 50 years ago and today for the area near the Nakatashiro crossroads, using the mesh method. It was found that high moor vegetation had increased by 15% and the bare land that had occupied 21% in 1970 had disappeared. The bare land due to the trampling effect has disappeared. It was also discovered that while some parts of the natural moor have been restored, there had been a remarkable expansion of the Myrica gale var. tomentosaand the Osmundastrum cinnamomeum var. fokiense-dominant communities.
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