scholarly journals Quantitative Multi-Hazard Risk Assessment of Crop Loss in the Yangtze River Delta Region of China

2019 ◽  
Vol 11 (3) ◽  
pp. 922
Author(s):  
Wei Xu ◽  
Xiaodong Ming ◽  
Yunjia Ma ◽  
Xinhang Zhang ◽  
Peijun Shi ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Yangtze River ◽  
Yangtze River Delta ◽  
Crop Loss ◽  
The Yangtze River ◽  
Hazard Risk ◽  
Joint Return ◽  
The Yangtze River Delta ◽  
Hazard Risk Assessment

Due to their complexity, hazard interactions are often neglected in current studies of multi-hazard risk assessment. As a result, the assessment results are qualitative or semi-quantitative and are difficult to use in regional risk management. In this paper, the crop loss risk due to heavy rain and strong wind in the Yangtze River Delta (YRD) region of China was quantitatively assessed, based on the joint return periods of these hazards and a vulnerability surface. The joint return period is obtained with a copula function based on the marginal distribution of each hazard. The vulnerability is fitted by considering the joint hazard intensity, the sown area of crops, elevation, and GDP per capita. The results show that counties with a high value of joint hazard probability are clustered in the southeast coastal area and that the value gradually decreases from south to north and from east to west. The multi-hazard risk has a similar pattern, with a large value in the southeast coastal area and a low value in the northwest. The proposed method can be used for quantitative assessment of multi-hazard risk, and the results can be used for regional disaster risk management and planning.

scholarly journals Exposure Assessment of Multiple Mycotoxins and Cumulative Health Risk Assessment: A Biomonitoring-Based Study in the Yangtze River Delta, China

Toxins ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 103
Author(s):  
Qingwen Huang ◽  
Keqiu Jiang ◽  
Zhanmin Tang ◽  
Kai Fan ◽  
Jiajia Meng ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Yangtze River ◽  
Yangtze River Delta ◽  
River Delta ◽  
Urine Samples ◽  
Health Concern ◽  
Cumulative Exposure ◽  
The Yangtze River ◽  
Two Samples ◽  
The Yangtze River Delta

The extensive exposure to multiple mycotoxins has been demonstrated in many countries; however, realistic assessments of the risks related to cumulative exposure are limited. This biomonitoring study was conducted to investigate exposure to 23 mycotoxins/metabolites and their determinants in 227 adults (aged 20–88 years) in the Yangtze River Delta, China. Eight mycotoxins were detected in 110 urine samples, and multiple mycotoxins co-occurred in 51/227 (22.47%) of urine samples, with deoxynivalenol (DON), fumonisin B1 (FB1), and zearalenone (ZEN) being the most frequently occurring. For single mycotoxin risk assessment, FB1, ZEN, aflatoxin B1 (AFB1), and ochratoxin A (OTA) all showed potential adverse effects. However, for the 12 samples containing DON and ZEN, in which none had a hazard risk, the combination of both mycotoxins in two samples was considered to pose potential endocrine disrupting risks to humans by hazard index (HI) method. The combined margin of exposure (MOET) for AFB1 and FB1 could constitute a potential health concern, and AFB1 was the main contributor. Our approach provides a blueprint for evaluating the cumulative risks related to different types of mycotoxins and opens a new horizon for the accurate interpretation of epidemiological health outcomes related to multi-mycotoxin exposure.

scholarly journals Risk Assessment of Drought in the Yangtze River Delta Based on Natural Disaster Risk Theory

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Gaofeng Fan ◽  
Yong Zhang ◽  
Yue He ◽  
Kuo Wang
Keyword(s):  
Risk Assessment ◽  
High Risk ◽  
Yangtze River ◽  
Yangtze River Delta ◽  
Disaster Risk ◽  
Drought Risk ◽  
The Yangtze River ◽  
Risk Areas ◽  
Natural Disaster Risk ◽  
The Yangtze River Delta

The risk of drought in the Yangtze River Delta Region (YRDR) was assessed using the method of natural disaster risk assessment. Based on the index of disaster risk, the assessment results of risk elements such as drought hazard and vulnerability were calculated in the YRDR. The division of relative drought risk levels in the YRDR was produced at the scale of county (city, district) and township. The results indicated that the areas of highest hazard of drought are located in the northern area of the YRDR. Areas with the greatest vulnerability of drought included Shanghai, Jiaxing, Wuxi, and Hangzhou. The highest risks of drought were mainly distributed in the north of the YRDR; the proportion of slightly high and extremely high risk areas in Shanghai, Nantong, Zhenjiang, Yangzhou, and Taizhou (Jiangsu province) is over 95%. The lowest-risk areas included the southeast coastal area of the YRDR, especially in Hangzhou, and Taizhou (Zhejiang province), where the proportion of slightly high and extremely high risk areas is below 5%. Based on this drought risk assessment, it is critical to establish a drought assessment system including both guarding against and addressing drought.

Sign in / Sign up

Export Citation Format

Share Document