Regional Sustainability ›› 2026, Vol. 7 ›› Issue (5): 100387.doi: 10.1016/j.regsus.2026.100387

• Research article • Previous Articles     Next Articles

Quantitative risk evaluation of agricultural drought in China using the improved catastrophe progression method

DU Xiaoyana,b,*(), FANG Dia, WANG Chengqina, TANG Ganga, WANG Qianc, HAN Dongjuna   

  1. a School of Architecture Engineering, Anhui University of Technology, Ma’anshan, 243002, China
    b Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, 243002, Ma’anshan, China
    c School of Energy and Environment, Anhui University of Technology, Ma’anshan, 243002, China
  • Received:2025-09-04 Revised:2026-01-04 Accepted:2026-09-19 Published:2026-09-30 Online:2026-10-12
  • Contact: DU Xiaoyan E-mail:safetydxy@163.com

Abstract:

The identification of factors contributing to agricultural drought and regions with high drought risk is important to reduce grain losses and ensure food security. However, agricultural drought is a complex phenomenon and governed by factors such as soil, crop, atmosphere, and human activity. Due to the complexity and uncertainty, there is currently a lack of effective quantitative risk assessment method that can reflect the process of risk formation. In this study, the hazard-exposure-vulnerability-resilience framework was applied to establish the risk evaluation index system of agricultural drought. This study used the improved catastrophe progression method (CPM) to diagnose and evaluate the agricultural drought risks in 31 provinces, municipalities, and autonomous regions of China during 2001-2020 based on the index data from China Statistical Yearbook and China Water Resources Bulletin. Results showed that 41.94% of provinces, municipalities, and autonomous regions had a risk above the national average, among which Henan Province had the highest agricultural drought risk. Moreover, there were distinct spatial characteristics in which risk decreased from western and central China (high risk) to northeastern and eastern China (low risk), and the top five high risk regions (Henan Province, Xinjiang Uygur Autonomous Region, Ningxia Hui Autonomous Region, Shandong Province, and Hebei Province) are all located north of the Yangtze River. At the criterion layer, the regional distribution characteristics of risks also exhibited significant variations. In summary, the approach is effective and can be applied to evaluate regional natural disaster risk. The results can facilitate the development of policies for regional agricultural drought prevention and mitigation.

Key words: Agricultural drought risk, Hazard-exposure-vulnerability-resilience framework, Catastrophe progression method (CPM), Comprehensive weighted scoring method (CWSM), Risk evaluation index system China