摘要
该研究以北京郊区3个典型田块为研究对象,T1与一山地接壤,T2紧邻京承高速公路,T3位于人为活动密集的村落附近。为了评价该区土壤质量以及初步探讨周边环境对其影响,选取土壤肥力因子pH值、有机质、有效磷、速效钾和硝态氮作为土壤肥力质量的评价指标,采用模糊隶属度函数模型分别对研究区T1、T2和T3进行定量评价;选取重金属Cu,Zn,Cr,Pb,Cd,As,Hg作为土壤环境质量评价指标,采用单因子污染指数和内梅罗综合污染指数相结合的方法进行评价。结果表明,T1、T2和T3土壤肥力质量综合指数分别为:0.494、0.624和0.630,土壤养分含量相对均一。T1、T2和T3土壤环境质量内梅罗指数分别为0.876、0.972和0.903,均处于土壤环境质量第Ⅱ级;各田块尤其是T2田块存在重金属污染的潜在风险。综合两方面的评价结果认为,研究区肥力质量良好,土壤环境质量尚清洁,适合作为设施农产品生产基地。T1田块受山地影响,肥力质量较差;T2田块环境质量最差;人为活动密集的村落对T3土壤质量尚未见影响。
In this study,typical three fields in the suburb of Beijing were selected as research object,including T1 bordering on a hill,T2 close to Beijing-Chengde highway,and T3 locating in the vicinity of the village with intensive human activities,.In order to evaluate soil quality in these areas and explore the impact of surrounding environment on soil quality,the soil fertility quality was quantitatively assessed by Fuzzy membership function model with basic evaluation indices which are organic matter,pH value,available phosphors,instant potassium and ammonium nitrogen.The soil environment quality was assessed by single factor pollution index and Nemerow indices of heavy metal including copper,zinc,chromium,plumbum,cadmium,arsenic,mercury.The results showed that comprehensive index of soil fertility quality in T1,T2 and T3 were 0.494,0.624 and 0.630,respectively,and Nemerow indices were 0.876,0.972 and 0.903,respectively,all belonging to Ⅱgrade of soil environment quality.In these three fields,T2 had potential risk of heavy metal pollution.The comprehensive assessment indicated that the studied fields had good soil fertility quality and environment quality which were quite clean and safe to be agricultural base for agricultural products.The soil fertility quality in T1 field was relatively poor under the effect of hill.T2 field showed the worst environmental quality.The village of intensive human activities had no impact on soil quality of T3.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第S2期228-234,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
农业部"农产品产地环境信息库建设"项目
北京市科委科技项目"京产大宗农产品质量安全检测与监测科技支撑工程"(Z09090001040000)
关键词
评价
环境影响
肥料
风险
等级
土壤质量
田块尺度
environmental impact,fertilizers,risk,grading,soil quality,field-scale
