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ラオス，ビエンチャン平野における微地形と河川の季節的水位変動の特徴
https://chikyu.repo.nii.ac.jp/records/573
https://chikyu.repo.nii.ac.jp/records/5736d3f5b19-e1e3-46f9-8f4f-94440ca2a566
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ラオス，ビエンチャン平野における微地形と河川の季節的水位変動の特徴 (581.6 kB)
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| Item type | 図書の一部 / Book(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2016-09-30 | |||||
| タイトル | ||||||
| タイトル | ラオス，ビエンチャン平野における微地形と河川の季節的水位変動の特徴 | |||||
| タイトル | ||||||
| タイトル | Water-level fluctuation and micro-geomorphology of the Vientiane Plain, Lao PDR | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 微地形｜水位変動｜降水量｜ビエンチャン平野 | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Micro-geomorphology｜Water-level fluctuation｜Precipitation｜Vientiane Plain | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_2f33 | |||||
| 資源タイプ | book | |||||
| 著者 |
小野, 映介
× 小野, 映介× ONO, Eisuke |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | ラオス中部のビエンチャン平野を対象として，河川地形の特徴と，それを取り巻く近年の環境変化について検討した．平野部に立地する村落では，微地形および恒常的な雨季- 乾季の季節的水位変動を利用した生業形態がとられている．しかし，雨季における降水量や浸水地域は，ほぼ毎年異なる不安定なものであり，とくに氾濫原と河成段丘面の境界域における水田耕作は，気候状況の影響を強く受ける．また，近年の降水状況や河川の開発により，雨季における水の動態は複雑化している． | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This study discusses the Water-level fluctuation and micro-geomorphology of the Vientiane Plain, Laos. Vientiane Plain is located on northernmost part of the Korat plateau, extending about 60km from north to south and 50km from east to west. The Plain is formed mainly by erosion by the Mekong and its tributaries. Based on degree of erosion and altitude, the micro-geomorphology can be classified into three components. In south part of the plain, Hills extend at 180-170m, and River terraces extend 170-160m. These surfaces were formed by fluvial systems of Ngum River. In dry season, shallow River flows the flood plain. While in rainy season, the water level rise, and flood plain submerge. Lakes and mashes are formed in a part of the River terraces. Under monsoon climate, Laos has distinct wet and dry seasons, which generate dynamic water level change in rivers and lakes. Rainfall record which observed by LAOS meteorological observatory since 1971, show the annual precipitation is not stable throughout 30years. Especially, large-scale flooding in the wet seasons in 1982 and 1995 submerged the river terraces at the banks with about 1.5m height of water, and caused serious damage to the inhabitants. In south part of the plain, the most villages are located on the Hills or River terraces adjacent to the flood plain. And, people make good use of Flood plain’s resources. The widest River terraces are mostly used as rainfed paddy. The rivers form incised meandering the plain, pumping water in 3-5m height is necessary for dry season paddy on River terraces. High cost of such facility limits the area of irrigated paddy to the small area along Mekong River and Ngum River. The scatter Hills are the target for development in suburban Vientiane, but it is left as forest in other areas. Inclination of this surface should hinder its use as paddy. The flood plain is unstable area which submerges in wet season. Some parts of this area are left unused in whole year, while others accommodate divers field land use. |
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| 図書名 | ||||||
| 収録物名 | 2005年度 生態史プロジェクト報告書 | |||||
| 出版者 | ||||||
| 出版者 | 総合地球環境学研究所 研究プロジェクト4-2 | |||||
| 開始ページ | ||||||
| 開始ページ | 305 | |||||
| 終了ページ | ||||||
| 終了ページ | 308 | |||||
| 出版年月日 | ||||||
| 日付 | 2006-09-30 | |||||
| 日付タイプ | Issued | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.chikyu.ac.jp/ecohistory/top_jp.htm | |||||
| 関連名称 | 生態史プロジェクト | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.chikyu.ac.jp/ | |||||
| 関連名称 | 総合地球環境学研究所 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
