西表島浦内川河口部における相対的海水準変動に伴うマングローブ林の立地形成過程

• 藤本 潔

  森林総合研究所

• 大貫 靖浩

  森林総合研究所九州支所

書誌事項

タイトル別名

• Developmental Processes of Mangrove Habitat Related to Relative Sea-level Changes at the Mouth of the Urauchi River, Iriomote Island, Southwestern Japan

抄録

In order to clarify geomorphologically the developmental processes of the mangrove habitats of Iriomote Island, topographic and surface geological surveys were performed along four lines in and around the mangrove habitat at the mouth of the Urauchi River in northwestern Iriomote Island.<br>As a result, it was learned that the mangrove habitat of Iriomote Island has migrated in response to relative sea-level changes. It is especially worth noting that the mangrove habitat abruptly moved seaward by a relative sea-level fall that occurred about 1, 000yrs BP. During the rising sea-level phase between 2, 000yrs BP and 1, 000yrs BP, the mangrove forests of the island retreated, landward, which indicates that they are possibly more sensitive to sea-level changes than mangrove forests of tropical areas such as Micronesia and the Philippines, where landward movement of mangroves during this period has not recognized. On the other hand, at the Rhizophora stylosa habitat situated in the inner mangrove forest, it was found that the mangroves have maintained their habitat and position by accumulating mangrove peat against relative sea-level rise after 260yrs BP.

収録刊行物

• 季刊地理学

  季刊地理学 47 (1), 1-12, 1995

  東北地理学会

キーワード

• Mangrove habitat
• Relative sea-level changes
• Radiocarbon dating
• FeS₂ contents analysis
• Aerial photograph
• Iriomote Island

詳細情報

• CRID: 1390282679441550976
• NII論文ID: 110000541945
• NII書誌ID: AN10379267
• DOI: 10.5190/tga.47.1
• ISSN: 18841252
• ISSN: 09167889
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可