摘要
以黄河三角洲为例进行了区域生态风险评价理论和方法的探讨。针对黄河三角洲主要生态风险源洪涝、干旱、风暴潮灾害、油田污染事故以及黄河断流的概率进行了分级评价 ;并提出度量生态损失与生态风险的指标和公式 ,分析了风险源的危害作用 ;运用遥感资料、历史记录、调查数据和地理信息系统 (GIS)技术 ,完成了区域生态风险综合评价 ;
Through the case study of the wetland in the Huanghe River (Yellow River) delta,the concept of regional ecological risk assessment is inquired into,and a set of assessment method was developed.The main process of regional ecological risk assessment includes 5 stages:regional analysis,risk receptor selection,risk sources analysis,exposure and hazard analysis,and integrated risk assessment.Arming at flood,drought,storm tide,petroleum pollution accident and flow breaking in the lower Huanghe River,the probability and distribution of each kind of risk sources are evaluated.The authors bring forward indexes and formulas to measure hazarded degree and risk value of ecosystem.By using remote sensing data,historic record,survey data and by means of geographical information system (GIS),regional ecological risk assessment is finished.On the basis of assessment result,the environmental risk management countermeasure of the Huanghe River delta is advanced.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第1期111-120,共10页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金资助项目!(4 97710 0 5
496 310 40 )
