土壤中砷的植物有效性研究进展  

Study Advances in Phyto-availability of Arsenic in Soil

作　　者：林志灵[1] 张杨珠[1] 曾希柏[2] 李莲芳[2] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128 [2]中国农业科学院农业环境与可持续发展研究所,北京100081

出　　处：《湖南农业科学》2011年第2期52-56,共5页Hunan Agricultural Sciences

基　　金：国家"十一五"科技支撑计划(2008BADA7B02)

摘　　要：土壤中砷的植物有效性研究是开展污染诊断、评估环境健康风险及开展砷污染土壤修复的重要依据。土壤中砷的危害一方面与其在土壤中的含量、有效性和结合形态有关,另一方面与植物对砷的富集能力有关。土壤中砷对植物的有效性主要与有效态砷的含量相关,土壤有效态砷的数量是土壤中砷污染状况的真实反映;富集系数是植物中砷含量与土壤中砷含量的比值,它可大致反映植物在相同土壤砷浓度条件下对砷的吸收能力。高砷风险区宜选种对砷富集能力较差的作物品种。The study on phyto-availability of arsenic in soil is a foundation for pollution diagnosis,risk assessment of environmental health and the remediation of arsenic-contaminated soil.The arsenic damage not only relates to the concentration,the availability and the combination forms of arsenic in soil,but also relate to the bioaccumulation ability of plant to arsenic.Arsenic phyto-availability mainly relates to available arsenic concentration in soil,and the available arsenic concentration in soil directly reflects arsenic contamination status of soil.The accumulation index is the ratio of arsenic concentration in plant to arsenic concentration in soil,which generally reflects the adsorption capacity of different plants to arsenic at the same arsenic concentration condition.Plants with lower accumulation capacity of arsenic are suitable to plant in high-arsenic risk area.

关 键 词：有效砷 土壤 植物有效性 富集系数 

分 类 号：S153.6[农业科学—土壤学]