土地质量地球化学评价方法应用研究

Application of Land Quality Geochemical Evaluation Method

以保障国家粮食安全、农产品质量安全与农业生态安全为目标,有效提高土地质量地球化学评价成果实用性,采用土地使用现状图斑作为评价单元,选择网格化土壤样品采集,对土壤样品中的N、P、K2O、Cr、Se、Ph等16种元素的指标进行了分析,并使用隶属度函数创建土地质量地球化学评估模型的方法,根据相应的土地质量地球化学评价规范实现了某地区土地质量的化学评价。结果表示,该方法具有较强的实用性,可作为土地科学管理及绿色农业发展推广的基础评估方法。

With the goal of ensuring national food security, agricultural product quality and safety and agro - ecological products, the practicality of land quality geochemical evaluation results is effectively improved. Land use status maps are used as evaluation units to select gridded soil samples for collection and soil samples. The indicators of 16 elements such as N, P, K2O, Cr,Se, and Ph were analyzed, and the method of establishing the land quality geochemical evaluation model using the membershipfunction was used to realize the certain land quality geochemical evaluation specification. Chemical evaluation of regional landquality was conducted. The results show that the method has strong practicability and can be used as a basic evaluation method forland science management and green agriculture development.