| 翻訳と辞書 |
| Deforestation in Madagascar ： ウィキペディア英語版 |
Deforestation in Madagascar
Deforestation in Madagascar is an ongoing environmental issue. Deforestation 〔(Saving the Wildlife of Madagascar ), TIME, September 25, 2008〕 creates agricultural or pastoral land but can also result in desertification, water resource degradation, biodiversity erosion and habitat loss, and soil loss.
It is frequently stated that Madagascar has lost 80 or 90% of its 'original' or 'pre-human' forest cover, but this claim is difficult to prove and is not supported by evidence. What is certain is that the arrival of humans on Madagascar some 2000+ years ago began a process of fire, cultivation, logging and grazing that has reduced forest cover. Industrial forest exploitation during the Merina monarchy and French colonialism contributed to forest loss. Evidence from air photography and remote sensing suggest that by c. 2000, around 40% to 50% of the forest cover present in 1950 was lost.〔〔(Deforestation causes species extinction in Madagascar )〕 Current hotspots for deforestation include dry forests in the southwest being converted for maize cultivation and rain forests in the northeast exploited for tropical hardwoods.
Primary causes of forest loss include slash-and-burn for agricultural land (a practice known locally as ''tavy'') and for pasture, selective logging for precious woods or construction material, the collection of fuel wood (including charcoal production), and in certain sites, forest clearing for mining.
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|