安徽农业科学
安徽農業科學
안휘농업과학
JOURNAL OF ANHUI AGRICULTURAL SCIENCES
2010年
3期
1203-1205,1208
,共4页
互花米草%重金属%循环%富集%转运
互花米草%重金屬%循環%富集%轉運
호화미초%중금속%순배%부집%전운
Spartina alterniflora%Heavy metal%Cycle%Enrichment%Transfer
[目的]探讨互花米草群落对重金属元素的循环和富集特征.[方法]利用样方法采集温州典型滩涂湿地的土壤和互花米草样品,结合互花米草生物量,研究Pb、Cr、Cu、Zn在土壤库-互花米草植物体系的循环、富集和转运规律.[结果]互花米草群落地上部分、根系和总生物量均随季节呈单峰型.从春季到冬季,植物体内Pb、Cr含量呈上升趋势,Zn、Cu含量呈先上升后下降趋势.4种金属元素在互花米草中的循环特征为,吸收系数:Zn＞Cu＞Pb＞Cr;利用系数:Cr＞Cu＞Pb＞Zn;循环系数:Zn＞Pb＞Cu＞Cr.互花米草不同部位对4种重金属的富集系数大小均为根系＞茎叶,转运系数为Pb(0.778)＞Cu(0.665)＞Cr(0.600)＞Zn(0.370).[结论]互花米草可作为一种修复植物用以恢复Pb、Cu污染较为严重的湿地生态系统的生态功能.
[目的]探討互花米草群落對重金屬元素的循環和富集特徵.[方法]利用樣方法採集溫州典型灘塗濕地的土壤和互花米草樣品,結閤互花米草生物量,研究Pb、Cr、Cu、Zn在土壤庫-互花米草植物體繫的循環、富集和轉運規律.[結果]互花米草群落地上部分、根繫和總生物量均隨季節呈單峰型.從春季到鼕季,植物體內Pb、Cr含量呈上升趨勢,Zn、Cu含量呈先上升後下降趨勢.4種金屬元素在互花米草中的循環特徵為,吸收繫數:Zn＞Cu＞Pb＞Cr;利用繫數:Cr＞Cu＞Pb＞Zn;循環繫數:Zn＞Pb＞Cu＞Cr.互花米草不同部位對4種重金屬的富集繫數大小均為根繫＞莖葉,轉運繫數為Pb(0.778)＞Cu(0.665)＞Cr(0.600)＞Zn(0.370).[結論]互花米草可作為一種脩複植物用以恢複Pb、Cu汙染較為嚴重的濕地生態繫統的生態功能.
[목적]탐토호화미초군락대중금속원소적순배화부집특정.[방법]이용양방법채집온주전형탄도습지적토양화호화미초양품,결합호화미초생물량,연구Pb、Cr、Cu、Zn재토양고-호화미초식물체계적순배、부집화전운규률.[결과]호화미초군락지상부분、근계화총생물량균수계절정단봉형.종춘계도동계,식물체내Pb、Cr함량정상승추세,Zn、Cu함량정선상승후하강추세.4충금속원소재호화미초중적순배특정위,흡수계수:Zn＞Cu＞Pb＞Cr;이용계수:Cr＞Cu＞Pb＞Zn;순배계수:Zn＞Pb＞Cu＞Cr.호화미초불동부위대4충중금속적부집계수대소균위근계＞경협,전운계수위Pb(0.778)＞Cu(0.665)＞Cr(0.600)＞Zn(0.370).[결론]호화미초가작위일충수복식물용이회복Pb、Cu오염교위엄중적습지생태계통적생태공능.
[Objective] The study aimed to discuss the cycle and enrichment characteristics of Spartina alterniflora community on heavy metal elements. [Method] The soil samples of typical beach wetlands and the samples of S. alterniflora in Wenzhou were collected by using quadrat method. The cycle, enrichment and transferring laws of Pb, Cr, Cu and Zn in the system soil pool-S. alterniflora plants were researched through combining with the S. alterniflora biomass. [Result] The aboveground part, root and totle biomass of S. alterniflora all showed a single peak with the season changing. From spring to winter, the content of Pb, Cr the plant showed an increasing tendency and the content of Cu, Zn showed the tendency of first rising and then decreasing. The cycling characteristics of 4 metal elements in the S. alterniflora were as follows: the absorb coefficient was Zn＞Cu＞Pb＞Cr, the utilization coefficient was Cr＞Cu＞Pb＞Zn, the cycle coefficient was Zn＞Pb＞Cu＞Cr. The enrichment coefficient of the different parts in the S. alterniflora on 4 heavy metals all were part＞root and transfer coefficient was Pb (0.778)＞Cu (0.665)＞Cr (0.600)＞Zn (0.370).[Conclusion] The S. alterniflora was a kind of plant that could be used to recover the ecological function of wetland ecosystem seriously polluted by Pb and Cr .
