New model of hazard potential index based on slope land disturbance and regional carrying capacity: a case study of Namaxia District in Kaohsiung City, Taiwan

Yie Ruey Chen, Chwen Ming Chang, Chih Ming Tseng, Meng Zhen Hung, Shun Chieh Hsieh

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

In the last few decades, the economic activities have been growing fast in slope land of Taiwan. To investigate the effect of slope disturbance by slope utilization on the landslide potential, this study employed the concepts of regional carrying capacity, natural environment, and slope utilization to establish a hazard potential index based on slope land disturbance (IHSD) to define the extent of slope development and utilization. Furthermore, combined with the product of the effective accumulated rainfall (EAR) and the maximum 3-h rolling rainfall intensity (I3Rmax), logistic regression was used to establish a landslide potential model. The results revealed that the landslide grid ratio had a tendency to increase as the IHSD interval value increased, when the IHSD value reached approximately 350 and the rainfall index EAR × I3Rmax exceeded 20,000 (mm2/3 h), landslide probability was high. Moreover, the overall accuracy of the landslide probability assessment model that was established using IHSD combined with rainfall indicators was approximately 78%. As the average rainfall index of each rainfall event increased, the number of historical disaster points located in such areas also generally increased.

原文English
文章編號440
期刊Environmental Earth Sciences
80
發行號12
DOIs
出版狀態Published - 2021 6月

All Science Journal Classification (ASJC) codes

  • 全球和行星變化
  • 環境化學
  • 水科學與技術
  • 土壤科學
  • 污染
  • 地質學
  • 地表過程

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