摘要
为改善灌区中低产地的产量、提高其田间管理及粮食综合生产能力、防止土壤盐碱化灾害的扩展，在土壤盐碱化灾害学研究的基础上，建立了土壤盐碱化灾害风险评价指标体系。选用基于熵权的灰色关联评价方法来构建土壤盐碱化灾害风险评价模型，根据标准自然灾害风险原理，建立土壤盐碱化灾害风险指数计算模型。在松原灌区土壤盐碱化灾害风险评价中的应用表明，灌区各灌片盐碱灾害风险值为0．10～0．36，属于中度风险和重度风险区，风险值由小到大排序为：前郭片、安字片、有字片、龙海片、水字片、大布苏片、潜字片、套浩太片、戎字片、红星片、洪字片。该模型与灌区实情符合较好，客观性较强，表明所建模型可用于土壤盐碱化灾害风险评价。
Soil salinization has given severe damage to human beings. In order to improve the grain production and the filed management of moderate-to-low-yield farmland, to prevent the damage of soil salinization getting worse, a risk evaluation index system of soil salinization was proposed in this study. According to the standard of natural disaster risk principle, this risk evaluation index system was constructed by grey correlation evaluation method based on entropy weight. At last, a risk index calculation model of soil salinization was successfully established. And this model was used to assess the risk of soil salinization in Songyuan irrigation district. The risk value（R） of soil salinization in these regions is between 0.10 - 0.36, which indicates that the risk is medium or high. The valued places are listed according the risk value from the lower to higher： Qianguo, Anzi, Youzi, Longhai, Shuizi, Dabusu, Qianzi, Taohaotai, Rongzi, Hongxing, Hongzi. The results showed that the risk value obtained by this model is in accordance with the local region＇s reality. It indicates that the model proposed could be used in the risk assessment of soil salinization.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2013年第5期1623-1629,共7页
Journal of Jilin University：Earth Science Edition
基金
中国地震局教师科研基金项目(20130103)
关键词
灾害学内涵
盐碱化风险
风险评价
松原灌区
田间管理
粮食产量
disaster science connotation
soil salinization risk
risk assessment
Songyuan irrigation district
field management
grain yield
