Spatial-temporal pattern changes of main agriculture natural disasters in China during 1990-2011

• Published in: Journal of geographical sciences 2015-08, Vol.25 (4), p.387-398
• Main Authors: Du, Xindong, Jin, Xiaobin, Yang, Xilian, Yang, Xuhong, Xiang, Xiaomin, Zhou, Yinkang
• Format: Article
• Language: English
• Subjects: Agricultural development; Agriculture; Disasters; Drought; Earth and Environmental Science; Emergency preparedness; Floods; Food security; Frost; Geographic information systems; Geographical Information Systems/Cartography; Geography; Hail; Natural disasters; Nature Conservation; Physical Geography; Remote sensing; Remote Sensing/Photogrammetry; Spatial distribution; Trends; Typhoons; 中国北方; 农业自然灾害; 地理信息系统; 时空格局; 种植面积; 粮食主产区; 粮食产量; 粮食生产
• ISSN: 1009-637X; 1861-9568
• DOI: 10.1007/s11442-015-1175-x

China is a disaster prone country, and a comprehensive understanding of change of disasters is very important for China＇s agricultural development. In this study, statistical tech niques and geographic information system tools are employed to quantify the main agricul ture disasters changes and effects on grain production in China during the period of 1990-2011. The results show that China＇s grain production was severely affected by disas ters including drought, flood, hail, frost and typhoon. The annual area covered by these dis asters reached up to 48.7x106 ha during the study period, which accounted for 44.8% of the total sown area, and about 55.1% of the per unit area grain yield change was caused by disasters. In addition, all of the disasters showed high variability, different changing trends, and spatial distribution. Drought, flood, and hail showed significantly decreasing trends, while frost and typhoon showed increasing trends. Drought and flood showed gradual changes and were distributed across the country, and disasters became more diversified from north to south. Drought was the dominated disaster type in northern China, while flood was the most important disaster type in the southern part. Hail was mainly observed in central and northern China, and frost was mainly distributed in southern China. Typhoon was greatly limited to the southeast coast. Furthermore, the resilience of grain production of each province was quite different, especially in several major grain producing areas, such as Shandong, Liaoning, Jilin and Jiangsu, where grain production was seriously affected by disasters. One reason for the difference of resilience of grain production was that grain production was marginalized in developed provinces when the economy underwent rapid development. For China＇s agricul tural development and grain security, we suggest that governments should place more em phasis on grain production, and invest more money in disaster prevention and mitigation, especially in the major grain producing provinces.