二维地表漫流模型在农田水淹损害因果关系中的应用  

Application of a two-dimensional overland flow model in causal relationship analysis of farmland flooding damage

作　　者：杨超铭 米长虹 杨伟超 郑传星 YANG Chaoming;MI Changhong;YANG Weichao;ZHENG Chuanxing(Agro-Environmental Protection Institute,Ministry of Agriculture and Rural Affairs,Tianjin 300191,China;Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China;Forensic Center of Agro-Ecological Environment and Agro-Product Quality Safety,Tianjin 300191,China;Tianjin Chengjian University,Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment,Tianjin 300191,China)

机构地区：[1]农业农村部环境保护科研监测所,天津300191 [2]中国农业科学院研究生院,北京100081 [3]农业生态环境及农产品质量安全司法鉴定中心,天津300191 [4]天津城建大学,天津市软土特性与工程环境重点实验室,天津300191

出　　处：《农业环境科学学报》2023年第12期2731-2739,共9页Journal of Agro-Environment Science

基　　金：国家自然科学基金资助项目(42201078)。

摘　　要：目前,人工构筑物修建与农田水淹损害因果关系鉴定实践需求多,现有判定方法精度低、可信性弱。二维地表漫流模型可以实现农业环境因果关系模拟计算,提高因果关系判定的精确性。本文通过模拟分析人工构筑物修建前后受淹农田的淹没范围、淹没水深、淹没流速以及淹没时长,确定降雨与农田水淹损害之间的因果关系,揭示水淹损害与排涝条件受损之间的关联,并通过时空关联及历史实测数据进行方法验证。结果表明:二维地表漫流模型在农田水淹损害鉴定因果关系分析中具有很好的应用价值,为农田水淹因果关系分析提供了新视角和新方法,具有很好的推广前景。Currently,there is a need to understand the causal relationship between the construction of artificial structures and farmland flooding damage for many practical reasons;however,existing identification methods exhibit low accuracy,which has weakened their credibility.A two-dimensional surface flow model can accommodate the simulation calculations required to determine agricultural environmental causality,while improving the accuracy of causality determination.This study has simulated and analyzed the submerged range,submerged water depth,submerged flow rate,and submersion duration of flooded farmland before and after the construction of artificial structures,determined the causal relationship between rainfall and farmland flooding damage,and revealed a relationship between flooding damage and impairment of drainage conditions.These methods have been verified using spatio-temporal correlation and historical measured data.The results show that the two-dimensional surface flow model can be used to effectively perform a causal relationship analysis of farmland flooding damage,while providing a new perspective and exhibiting large-scale applicability.

关 键 词：农田水淹 二维地表漫流模型 农业环境 因果关系判定 

分 类 号：X53[环境科学与工程—环境工程]