ＧＩＳを用いた中国黄土高原における水系分布と規定要因の解明

• 松永 光平

  東京大学大学院新領域創成科学研究科

書誌事項

タイトル別名

• Clarifying the Distribution of Drainage Networks and Its Determinants on the Chinese Loess Plateau Using GIS
• GIS オ モチイタ チュウゴク オウド コウゲン ニ オケル スイケイ ブンプ ト キテイ ヨウイン ノ カイメイ

抄録

 To clarify regional differences and determinants of drainage network evolution on the Chinese Loess Plateau, a distribution map of drainage density is delineated from DEMs. In addition, the distribution map of drainage density is compared to other thematic maps. This comparison reveals that drainage density distribution corresponds to the distribution of landform types such as uplands or hilly lands. The relation between mean annual rainfall and vegetation cover ratio on each landform type is also clarified. On hilly lands, drainage density increases as mean annual rainfall increases from 300 mm to 500 mm. After mean annual rainfall exceeds 500 mm, drainage density starts to decrease if the vegetation cover ratio is more than 70%. The correspondence between drainage density and bedrock geology is not clear. Therefore, it is likely that landform types control the regional distribution of drainage density. In addition, if mean annual rainfall is more than 500 mm, drainage network evolution is limited by vegetation cover even on hilly lands.

収録刊行物

• 地学雑誌

  地学雑誌 118 (6), 1275-1283, 2009

  公益社団法人 東京地学協会

キーワード

• 侵食
• 水系密度
• 黄土高原
• DEM
• GIS

詳細情報

• CRID: 1390282679205318528
• NII論文ID: 10030367751
• NII書誌ID: AN00322536
• DOI: 10.5026/jgeography.118.1275
• ISSN: 18840884
• ISSN: 0022135X
• NDL書誌ID: 10560299
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10560299
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可