摘要
以安塞石油开采区梁峁和沟坡石油污染草地为研究对象,在测定土壤石油烃含量和土壤抗蚀性指标的基础上,采用主成分分析法综合分析评价不同石油污染草地土壤抗蚀性。结果表明:当石油污染土壤石油烃含量达1g/kg以上时,无污染土壤抗蚀性强于石油污染土壤抗蚀性;石油污染土壤石油烃含量小于1g/kg时,石油污染土壤抗蚀性强于无污染土壤抗蚀性;在相同立地条件下,无污染土壤抗蚀性强于石油烃含量在1g/kg以上的中度污染土壤,强于石油烃含量在13g/kg以上重度污染土壤;无污染土壤的抗蚀性大小排序为铁杆蒿>草木樨>冰草;污染土壤的抗蚀性大小排序为草木樨>铁杆蒿>冰草。
Took the petroleum exploration area and petroleum-contaminated grassland in Ansai of Shaanxi as the object, using principal component analysis analyzed the soil anti-erodibility of petroleum-contaminated grassland based on the determination of soil total petroleum hydrocarbons and soil anti-erodibility indexes. The results showed that. When petroleum hydrocarbon content in petroleum-contaminated soil was more than 1 g/kg, soil anti-erodibility of non-contaminated soil was greater than that of petroleum-contaminated soil. When petroleum hydrocarbon content of petroleum-contaminated soil was less than 1 g/kg, soil antierodibility of petroleum-contaminated soil was greater than that of non-contaminated soil. Under the same site condition, soil anti-erodibility of non-contaminated soil ）the petroleum hydrocarbon content in more than 1 g/kg（moderately contaminated soil） 〉the petroleum hydrocarbon content in more than 13 g/kg（heavy contaminated soil）. The order of anti-erodihility of non-contaminated soil was Artemisia sacrorum 〉Melilotus suaveolens 〉Agropyron cristatum. The order of anti-erodibility of petroleum-contaminated soil was Melilotus suaweolens 〉Artemisia sacrorum 〉Agropyron cristatum.
出处
《水土保持学报》
CSCD
北大核心
2014年第1期12-17,共6页
Journal of Soil and Water Conservation
基金
林业公益性行业科研专项(201104002-4)
关键词
黄土高原
石油污染草地
石油开采
土壤抗蚀性
主成分分析
Loess plateau
petroleum-contaminated grassland
petroleum exploration
soil anti-erodibility
principal component analysis
