Abstract: Inner Mongolia is one of the main soybean producing areas in China, drought has been the main disaster in this region. Therefore, it has an important practical significance to explore the risk analysis and regionalization of soybean drought disaster in Inner Mongolia. Based on the theory of natural disaster risk, the models of drought disaster risk regionalization were built  by using the data of 119 stations in Inner Mongolia including weather, geographic information and statistical data of society and economy, and combining with the data of Second China Land Census. And the risk regionalization map was drawn by GIS technology. In this paper, the results showed that in Inner Mongolia,  the high drought risk areas were mainly distributed in the west of Daxinganling mountain regions, and the western-west regions. The medium-risk areas for drought of soybean were mainly in the both sides of Daxinganlingmountain, some areas of south-east, and eastern-west regions. The low risk areas were located in the western of Hinggan League, the southwest of Tongliao City, most of Chifeng City and most of south-central region.  This paper put forward some suggestions for each risk area, and the accuracy of zoning results is high.It was proven that the divisional result had higher precision, which was consistent with the situation include soybean reduction rate and the losses of drought. Above results could reflect the whole situation in Inner Mongolia and provide references for drought disaster prevention of soybean, which provided reference for soybean drought disaster prevention.

Key words: drought, risk assessment, models, regionalization, soybean

摘要： 内蒙古地区是我国大豆主产区之一，同时也是干旱灾害的高发区，因此,加强内蒙古地区大豆干旱灾害风险分析与区划具有重要的现实意义。基于自然灾害风险理论，利用内蒙古地区119个站点的气象资料、地理信息、人口经济等指标，结合第二次土地调查数据，建立适用于内蒙古地区的大豆干旱风险区划模型，并利用GIS技术绘制风险区划图。结果表明：内蒙古地区大豆干旱综合风险高值区主要集中在岭西部分农区及西部大部，风险中值区主要分布在岭西大部及岭东南、东部偏南部分区域及西部偏东地区，风险低值区主要分布在兴安盟西部、通辽市偏西南、赤峰市大部、中部偏南大部分地区。针对各风险区提出了趋利避害的建议，且经验证发现区划结果精度较高，与内蒙古各地大豆减产率及旱灾的实际情况较吻合，可为大豆干旱灾害防御提供参考。

关键词: 干旱, 风险评估, 模型, 区划, 大豆