重金属污染土壤修复中杂草资源的利用
Utilization of Weed Resource in the Remediation of Soils Contaminated by Heavy Metals
查看参考文献42篇
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文摘
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对重金属污染土壤植物修复基本原理、作用方式及亟待解决的问题进行了论述,认为现有修复植物均不同程度存在一些弱点,还难以大规模应用于修复实践.杂草具有抗逆境能力强、生长迅速、繁殖能力强以及在环境条件适宜情况下生物量能够急剧提高等特点,可以弥补现有修复植物的缺点和不足,是较理想的植物修复资源.结合笔者的研究情况,对杂草资源在重金属污染土壤植物修复中的利用方式、修复植物筛选方法进行了论述,而且在植物修复生物量处理方面也进行了讨论,试图为重金属污染土壤植物修复进一步发展提供科学依据. |
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其他语种文摘
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Phytoremediation of soils contaminated by heavy metals refers to the utilization of some special plants to clean polluted environment through extraction,volatilization,translocation and stabilization.The two main methods are phytoextraction and phytostabilization,i.e.,to remove heavy metals using hyperaccumulators from contaminated soils or stabilize them by excluder plants in situ.At present,phytoremdiation technologies are not successfully used in large-scale remediative practice.The results partly lie in many disadvantages of the documented hyperaccumulators, such as small aboveground biomass,slow growth and long maturity phase.As for excluder plants, there are few materials published.With the properties of strong endurance to adverse environment,fast growing and high reproduction.especially the characteristics of the fast increase in biomass under feasible environmental factors,weed can make good the defect or cover the shortage of the available remediation plants,so it is a kind of ideal remediative resource. Based on our researches into phytoremediation,applications and screening methods of remediative weed plants were introduced,moreover,the dispose of remediative plant biomass was also discussed.lt was suggested that the comprehensive utilization of weed plant resource would make a great progress in the remediation of soils contaminated by heavy metals. |
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来源
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自然资源学报
,2005,20(3):432-440 【核心库】
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关键词
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植物修复
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杂草资源
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重金属
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污染土壤
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地址
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中国科学院,沈阳应用生态研究所, 中科院陆地生态过程重点实验室, 辽宁, 沈阳, 110016
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1000-3037 |
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学科
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环境污染及其防治 |
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基金
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国家自然科学基金国家杰出青年科学基金
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国家自然科学基金重点项目
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文献收藏号
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CSCD:1991021
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