College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, 610059, China.
Research Center for Human Geography of Tibetan Plateau and Its Eastern Slope, Chengdu University of Technology, Chengdu, 610059, China.
Environ Sci Pollut Res Int. 2022 Jul;29(34):52111-52122. doi: 10.1007/s11356-022-19485-4. Epub 2022 Mar 7.
Research on the poverty risk caused by geological disasters in disaster-prone areas is a useful exploration to coordinate social economic development with disaster prevention and reduction, and is of great significance to the regional sustainable development. Based on statistical data and spatial data, this paper takes Sichuan Province as the typical research area. Remote sensing and geographic information technology are used to study the poverty risk caused by disasters based on the quantitative evaluation of geological disasters risk and regional development level. The spatial differentiation characteristics of poverty risk caused by disasters are explored on the 1 km × 1 km grid scale. The results indicate that (1) the overall risk of geological disasters in Sichuan Province is relatively high, with high and relatively high risk areas accounting for more than 40% and low and relatively low risk areas accounting for less than 30%. The risks in Mountain and Ravine Areas are significantly higher than other areas. (2) The regional development level in Sichuan Province is relatively high, but with significant spatial differences. The development level of high-altitude areas and remote mountainous areas is quite different from that of the Chengdu Plain in the middle Sichuan Province. The uneven development in the east, middle, and west is a prominent problem. (3) The poverty risk caused by disasters is high, and the spatial pattern presents a characteristic of "high in the west and low in the east" with high positive spatial correlation. High-High Cluster Areas are mainly distributed in western and southwestern Sichuan. Low-Low Outlier Areas are mainly distributed in Chengdu Plain and Hilly Areas of Sichuan Basin. High-Low Outlier and Low-High Outlier Areas occupy a relatively small percentage with scattered distribution. This paper provides some theoretical support for policy formulation and management of coordinated development of regional socioeconomic and ecological environment.
易灾地区地质灾害致贫风险研究是协调社会经济发展与防灾减灾的有益探索，对区域可持续发展具有重要意义。本文基于统计数据和空间数据，以四川省为典型研究区，利用遥感和地理信息技术，在地质灾害风险定量评价和区域发展水平的基础上，对灾致贫困风险进行研究，探讨了灾致贫困风险在 1km×1km 网格尺度上的空间分异特征。结果表明：（1）四川省地质灾害总体风险较高，高及较高风险区占比超过 40%，低及较低风险区占比不足 30%，山地峡谷区风险显著高于其他区域；（2）四川省区域发展水平较高，但存在显著的空间差异，高海拔区和偏远山区发展水平与四川中部成都平原差异较大，东、中、西部发展不平衡问题突出；（3）灾致贫困风险较高，空间格局呈现“西高东低”的特征，具有显著的正空间相关性，高高集聚区主要分布在四川西部和西南部，低低集聚区主要分布在成都平原和四川盆地丘陵区，高低集聚区和低高集聚区分布零散，占比较小。本文为区域社会经济与生态环境协调发展的政策制定与管理提供了一定的理论支撑。
