农田土壤生态风险评价的方法论
On Methodology for Ecological Risk Assessment of Agricultural Soil
本文探讨了农田土壤生态风险评价涉及的方法论问题。（1）参照系统。所有的农田不同程度地受人类的干扰和破坏，需要一个未被破坏的自然生态系统作对照。（2）研究站点的分布。风险评价必须考虑生态因素的层次性。本文将生态因素划分为气候带（climate zone），地域（location），地点（site） 和观测区（monitoring area）四个层次。（3）观测区的样方布置与取样。（4）生态风险评价指标。农田土壤指标的获得从一级指标到二级、三级、四级指标。而参照系统基准值指标的推导，是反向过程，从农田的四级指标中提取三级指标，再从三级指标中逐步提取二级和一级指标。参照系统第一、二、三级指标的基准值分别对应于气候带（climate zone），地域（location）和地点（site）这三个生态层次，用于风险评价。 我们将根据农田土壤不同的生态风险等级，来决定调控的措施和力度。
few methodological issues were discussed in this paper, which involved in the ecological risk assessment in agricultural soil, including (1) Reference system: it was proposed to use forest soils in the mountainous areas as the reference systems. (2) The Distribution of research stations/sites: the research stations should be arranged according to the hierarchies of ecological factors. (3) Layout of quadrats in monitoring areas and sampling. (4) The indicators for ecological risk assessment: these indicators are designed on the basis of the biological mechanisms underlying the mineralization of soil organic matter. In reference system, the first, secondary, and tertiary hierarchies are climate zone, location, and site, respectively, the basic value of indicators in these different levels will be used for ecological risk assessment of agricultural soil.
曹志平
农业科学理论环境科学基础理论环境质量管理
环境污染及其防治，生态风险，评价指标， 土壤有机质， 速效磷， F/B
environmental pollution ecological risk assessment indicators soil organic matter available phosphorus F/B???
曹志平.农田土壤生态风险评价的方法论[EB/OL].(2015-01-27)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201501-459.点此复制
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