Effect of acid soil properties on soil erosion at a dumping site in an open-pit coal mine, Indonesia

H. Shimada, S. Matsumoto, A. Hamanaka, T. Sasaoka, G. J. Kusuma

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

1 被引用数 (Scopus)

抄録

Soil erosion which easily progresses due to heavy rain in the tropical climate is a serious issue for mined-land reclamation in Indonesia since it causes plant death. Moreover, acidifi-cation of soils occurs because of sulfide minerals in mining area. The physical properties of soils are changed by the acidification of soils according to previous studies. Thus, since the erosion rate of soils greatly depends on physical characteristics of soils, the relation between the change of physical properties of soils caused by soil acidification and soil erosion has to be considered for erosion control in mining area. In this study, physical properties of the soil samples in which the soil-pH was adjusted with H2SO4 were measured, followed by the artificial rainfall test with the samples in order to understand the effect of acidification of soils on erosion rate. The results showed that the decrease of cohesive strength among soil particles caused by the decline of consistency limit with soil acidification resulted in the increase of erosion rate. Hence, soil acidi-fication should also be prevented with the measures against soil erosion for successful mined-land reclamation. Based on DPSIR model and considered previous studies and realities, this essay chooses a typical case, Wu’an, in order to build an ecological security evaluation system. With reference to relevant standards, eco-logical security level was determined. There is a want of developmental driver of urban system, pressure of habitat overload and obviously insufficient social response. In order to get out of “resource curse”, Wu’an should make the innovation-driven improvement and increase the investment in environmental protection.

本文言語英語
ホスト出版物のタイトルLand Reclamation in Ecological Fragile Areas - Proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017
編集者Zhenqi Hu
出版社CRC Press/Balkema
ページ239-244
ページ数6
ISBN(印刷版)9781138051034
DOI
出版ステータス出版済み - 2017
外部発表はい
イベント2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017 - Xi’an, 中国
継続期間: 10月 20 201710月 23 2017

出版物シリーズ

名前Land Reclamation in Ecological Fragile Areas - Proceedings of the 2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017

その他

その他2nd International Symposium on Land Reclamation and Ecological Restoration, LRER 2017
国/地域中国
CityXi’an
Period10/20/1710/23/17

!!!All Science Journal Classification (ASJC) codes

  • マネジメント、モニタリング、政策と法律
  • 環境工学
  • 汚染
  • 地盤工学および土木地質学

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