基于多源数据整合的耕地生态安全评价研究

Cultivated Land Ecological Security Evaluation Based on Multi-Source Data Integration

耕地生态安全是耕地质量管理的核心内容之一,开展耕地质量安全评价对于保障粮食安全具有十分重要的意义.在传统社会经济数据的基础上,利用耕地质量数据表示耕地的自然状况;通过外业调查开展土壤综合污染评价来反映耕地的生态环境情况.利用“压力-状态-响应(PSR)”模型建立耕地生态安全评价指标体系,实现统计数据、耕地质量数据和土壤环境数据等多源数据的整合.评价结果显示,耕地生态安全总分值能较好体现耕地质量和土壤环境质量的真实分布特征,耕地生态安全评价的准确性也得到提升.

Cultivated land ecological security is one of the core contents of cultivated land quality management.It is of great significance to carry out the evaluation of cultivated land quality security for ensuring food security.Based on the traditional social and economic data,the cultivated land quality data was used to represent the natural condition of cultivated land,and the comprehensive soil pollution assessment through field investigation was used to reflect the ecological environment of the cultivated land.By using the pressure-state-response(PSR)model we established the cultivated land ecological security evaluation index system,which realized the integration of multi-source data including statistical data,cultivated land quality data and soil environment data.According to the evaluation results,the cultivated land ecological security value can better reflect the cultivated land quality and real distribution characteristics of soil environmental quality,and the accuracy of the cultivated land ecological security evaluation is also improved.