摘要
针对传统的土壤质量评价方法难以满足现代农业发展的现状,提出了一种土壤质量指数法(SQI)综合评价土壤质量,旨在为农业生产、农产品产地选址、农业环境保护等提供理论支撑和参考依据。将方法在北京市郊区7种土地利用方式(粮田、林地、湿地、荒地、果园、菜地、草地)上进行了应用,并与常规方法进行了对比,结果表明:采用隶属度模型评价土壤肥力,肥力高低顺序为:湿地>菜地>粮田>林地>果园>荒地>草地;采用内梅罗污染指数评价了重金属污染状况,污染程度高低顺序为:湿地>菜地>荒地>果园>林地>粮田>草地;采用SQI指数评价土壤综合质量,其综合质量的高低顺序为:湿地>粮田>菜地>果园>林地>荒地>草地。此外还对评价模型的适用范围、评价结果的划分等一系列关键问题进行了探讨,得出:SQI指数评价方法的应用及结果的划分涵盖了不同的土地利用方式的农用地,体现了各种土壤属性的差异和变异特性,评价结果可实现土壤综合质量定性和定量化,能够反映土壤的关键信息,符合农业生产需要。
As traditional method of soil quality assessment cannot meet the need of modern agricultural development,the paper brings forward a comprehensive evaluation method of soil quality：Soil quality index （SQI）,in order to provide theoretical support and reference for agricultural production,field selection of farmland and the protection of agriculture environmental. This method had been applied to the soil of seven patterns of land-use （grain fields,woodlands,wetlands,wasteland,orchard,vegetable garden,lawn） in Beijing suburbs,and was compared with the conventional methods. The results showed that the soil fertility assessed by Fuzzy membership function model was ranked as follows：wetland vegetable gardengrain crop fieldsforest landorchardwastelandgrassland. The soil environment quality was assessed by single factor pollution index and Nemerow indices of heavy metal,the contamination index in the order：wetlandvegetable gardenwastelandorchardforest landgrain crop fieldsgrassland. The comprehensive quality of soil which was evaluated by SQI,ranked as follows：wetlandgrain crop fieldsvegetable gardenorchard forest landwastelandgrassland. In addition,some significant topics were discussed such as model scope,division of evaluation results,etc. It was concluded that SQI model not only can be applied to different land-use types,but also reflects the spatial variability of soil properties and soil critical information,e.g. fertility and pollution. It can achieve qualitative and quantitative analysis of soil comprehensive quality,and meet the needs of agricultural production.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第12期311-318,共8页
Transactions of the Chinese Society of Agricultural Engineering
基金
农业部农业生态环境保护项目:农产品产地环境信息库建设
主要大中城市农产品产地重金属污染监测及数据库建设
农业部948项目"农田环境信息快速获取与农产品安全监测系统"(2006-G63-2)
关键词
重金属
土壤测试
环境保护
土壤质量指数(SQI)
评价方法
肥力
heavy metal
soil testing
environmental protection
soil quality index （SQI）
evaluation method
fertility
