期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Edible Plants Enriched with Selenium
1
作者 Krystyna Pyrzynska 《Journal of Agricultural Science and Technology(A)》 2014年第8期627-632,共6页
Selenium (Se) is an important element from the environmental and biological point of view. In the world, deficiency of Se in a diet occurs more often and nutritional supplements are recommended.The ability of severa... Selenium (Se) is an important element from the environmental and biological point of view. In the world, deficiency of Se in a diet occurs more often and nutritional supplements are recommended.The ability of several plants to accumulate and transform inorganic Se forms into its bioactive organic compounds has important implications for human nutrition and health. This work gives a brief overview of the study carried out to characterize Se species produced by different enriched edible plants which were grown in the presence of different Se species. 展开更多
关键词 Se species enriched edible plants Se accumulation and transformation.
下载PDF
湖北铜绿山古铜矿遗址区木本植物对重金属富集能力的分析 被引量:31
2
作者 康薇 鲍建国 +3 位作者 郑进 邹涛 闵建华 杨裕启 《植物资源与环境学报》 CAS CSCD 北大核心 2014年第1期78-84,共7页
对湖北铜绿山古铜矿遗址区的木本植物种类组成及生长概况进行了调查,并采用原子吸收光谱法测定了木本植物地上部和地下部及其根际土壤中重金属含量;在此基础上,分析了各树种对cu、cd和Pb的富集作用,并对木本植物的生态修复意义进行... 对湖北铜绿山古铜矿遗址区的木本植物种类组成及生长概况进行了调查,并采用原子吸收光谱法测定了木本植物地上部和地下部及其根际土壤中重金属含量;在此基础上,分析了各树种对cu、cd和Pb的富集作用,并对木本植物的生态修复意义进行了初步评价。结果表明:在该古铜矿遗址区共有木本植物13科14属14种,其中乔木13种、灌木1种;木本植物的树龄4~25a、株高3.7~22.6m、胸径5.3~29.0am,长势均较好。木本植物根际土壤中Cu、Cd、Pb、Cr、Mn和zn的平均含量分别为3166.73、3.66、137.06、31.32、1774.43和208.32mg·kg-1,其中,土壤中Cu、Cd和Pb的含量达到重度污染等级。各树种地上部和地下部的Cu、Cd和Ph的含量差异明显,且均为cu含量最高、cd含量最低;各树种的地上部和地下部对Cu、Cd和Pb的富集系数及综合富集系数也均有明显差异,但对Cd的富集系数均最大。法国冬青[Viburnumodoratissimumvat.awabuki(K.Koch)ZabelexRumpl]、梧桐[Firmianaplatanifolia(Linn.f.)Marsili]、桂花[Osmanthusfragrans(Thunb.)Lour.]和刺槐(RobiniapseudoacaciaLinn.)地上部的综合富集系数较高,苦楝(MeliaazedarachLinn.)、女贞(LigustrumlucidumAit.)、法国冬青和樟树[Cinnamomumcamphora(Linn.)Presl]地下部的综合富集系数较高;总体上看,法国冬青、苦楝、女贞、梧桐和桂花对Cu、Cd和Pb的平均综合富集系数均大于1,具有较高的重金属富集能力。根据研究结果,建议在Pb污染区域可选择栽植二球悬铃木(Platanus×acerifolia 2i。(Ait.)Willd.]和构树[Broussonetiapapyrifera(Linn.)L’Heft.exVent.]等树种,在Cd污染区域可选择栽植法国冬青、梧桐、刺槐和苦楝等树种,而在Cu—Cd—Pb复合污染区域应栽植法国冬青、苦楝、女贞、梧桐、桂花和刺槐等树种。 展开更多
关键词 古铜矿遗址 重金属污染 木本植物 根际土壤 富集能力 生态修复
下载PDF
Greenhouses for CO_(2) sequestration from atmosphere 被引量:3
3
作者 Jie Bao Wei-Hua Lu +1 位作者 Jigang Zhao Xiaotao T.Bi 《Carbon Resources Conversion》 2018年第2期183-190,共8页
Escalating threat of global warming and the steady growth in world population require the development of transformative greenhouse gas control technologies and food production systems of high energy efficiency,small e... Escalating threat of global warming and the steady growth in world population require the development of transformative greenhouse gas control technologies and food production systems of high energy efficiency,small environmental footprint and low cost.To control the global temperature rise below 2℃ by 2050,global greenhouse gas emissions need to be cut by more than 80%.At the same time,our land needs to be utilized more efficiently and productively in order to produce enough food to feed projected 9 billion people with less available land area for food production in 2050.We propose to develop a modern urban vertical farming system,i.e.greenhouses equipped with a Carbon Enrichment for Plant Stimulation(CEPS)system,to enhance land use efficiency and thus increase food productivity and,at the same time,to sequestrate CO_(2) from ambient air.The deployment of such a CEPS system will have a potential to remove more than 500 million tonnes CO_(2) from air annually,and increase the current food productivity by more than 15 times than the open field operation.The deployment of the CEPS technology will also promote locally produced food,benefiting urban economical development and job creation. 展开更多
关键词 Carbon enrichment for plant stimulation GREENHOUSES Temperature swing adsorption Sequestration of atmospheric CO_(2)
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部