北京市不同土地利用类型的土壤镉含量特征
收稿日期: 2004-11-20
修回日期: 2005-02-04
网络出版日期: 2005-08-15
基金资助
国家杰出青年基金项目(40325003);北京市自然科学基金重大项目(6990002)
Cadmium accumulation in soils for different land uses in Beijing
Received date: 2004-11-20
Revised date: 2005-02-04
Online published: 2005-08-15
通过对北京市菜地、稻田、果园、绿化地、麦地以及自然土壤6种土地利用类型共595个土壤样品的调查分析,探讨了不同土地利用方式对土壤镉含量的影响。结果表明,绿化地、麦地以及自然土壤与背景值没有显著差别;菜地、稻田、果园的镉含量显著高于背景值。6种土地利用类型中,菜地土壤的镉含量最高,其次为稻田和果园,绿化地以及麦地土壤镉的含量最低。与土壤基线值相比,果园样品有9.5%的样品超出,绿化地与菜地分别有7.7%和4.6%超出。在全部土壤样品中,共有19个样品超标,超标率为3.2%。石景山、门头沟、丰台、海淀等地区的样品超标较多,应该合理规划这些地区的农业土地利用。
郑袁明, 罗金发, 陈同斌, 陈煌, 郑国砥, 吴泓涛, 周建利 . 北京市不同土地利用类型的土壤镉含量特征[J]. 地理研究, 2005 , 24(4) : 542 -548 . DOI: 10.11821/yj2005040008
Information on the environmental effects of different land uses is lacking, especially in Beijing, a city with a rapidly increasing rate of development. Such information is important for the understanding of the sustainable development and regional agricultural plans. In this study, through the investigation of 6 types of land use in Beijing, including vegetable field, paddy field, orchard, greenbelt, cornfield, and natural soil, Cd concentrations of 595 soil samples were obtained. Compared with background concentration, the accumulation of Cd in the vegetable field, paddy field, and orchard was significant. ANOVA analysis indicated that land use greatly affected the accumulation of Cd in the soils, especially in the cornfield, vegetable field, and orchard land-use types. The mean Cd concentration in the vegetable field was the highest, while samples from greenbelt and cornfield had the lowest mean concentrations. In addition, Cd concentrations of cornfield samples, which comprised the majority of samples under investigation, were low. Factors such as atmospheric deposition, which controls the large-scale distribution of Cd, might not have an obvious effect. Using a baseline concentration as background, the ratio of soil samples above this limit in orchard, greenbelt, and vegetable field were 9.5%, 7.7%, and 4.6%, respectively, while the overall ratio for the study was 3.2%. According to this investigation, some anthropogenic factors such as industrial activities, traffic, and landfill waste, played quite important roles in the accumulation of soil sample Cd. The soil environment around the landfill, therefore, should be considered seriously. In the Shijingshan, Mentougou and Fengtai districts, the ratios of soil samples above baseline were much higher than those in other districts, and therefore reasonable planning of land use in these areas should be considered. According to the mean concentrations of Cd in the soil, the order of the 6 land-use types, from the highest to the lowest Cd concentration, was vegetable field > paddy field > orchard > natural soil > cornfield > greenbelt.
Key words： Beijing; Cd; land use; soil; heavy metal
[1] 夏增禄,李森照,李廷芳,等.土壤元素背景值及其研究方法.北京:气象出版社,1987.
[2] 陈怀满等.土壤—植物系统中的重金属污染.北京:科学出版社. 1996.
[3] Kaiser J. Toxicologist s shed new light on old poisons1 Science,1998,279:1850～1851.
[4] 陈同斌,郑袁明,陈煌,等.北京市土壤重金属背景值的系统研究.环境科学. 2004,25:117～122.
[5] 吴燕玉,王新,梁仁禄,等. Cd,Pb,Cu,Zn,As复合污染在农田生态系统的迁移动态研究.环境科学学报,1998,18:407～412.
[6] 张玉秀,柴团耀,Gerard Burkard1植物耐重金属机理研究进展.植物学报,1999,41:453～457.
[7] W HO1 Evaluation of certain food additives and contaminant s(41st Report of t he Joint FAO/W HO Expert Co mmittee on Food Additives). W HO Technical Report Series,no 8371 World Healt h Organization,Geneva1 1993.
[8] Nriagu J O,Pacyna J M. Quantitative assessment of worldwide contamination of air,water and soils by t race metals. Nature,1988,333:134～139.
[9] Lin Y P,Teng T P,Chang T K1 Multivariate analysis of soil heavy metal pollution and landscape pat tern in Changhua count y in Taiwan. Landscape and Urban Planning,2002,62:19～35.
[10] Nicholson F A,Smit h S R,Alloway B J,et al1 An inventory of heavy metals input s to agricult ural soil s in England and Wales.The Science of t he Total Environment,2003,311:205～219.
[11] Lindst ro m M. Urban land use influences on heavy metal fluxes and surface sediment concent rations of small lakes.Water,Air,and Soil Pollution,2001,126:363～383.
[12] Nasreddine L,Parent2Massin D. Food contamination by metals and pesticides in t he European Union1 Should weworry?Toxicology Letters,2002,127:29～41.
[13] 夏增禄.中国主要类型土壤若干重金属临界含量和环境容量区域分异的影响.土壤学报. 1994,31:161～169.
[14] Steinnes E,Allen R O,Petersen H M,et al.Evidence of large scale heavy-metal contamination of nat ural surfacesoils in Norway f ro m long-range at mospheric transport.The Science of t he Total Environment1 1997,205:255～266.
[15] Rat ha D S,Sahu B K1 Source and dist ribution of metals in urban soil of Bo mbay,India,using multivariate statistical techniques. Environmental Geology,1993,22:276～285.
[16] Kelly J,Thornton I,Simp son P R1 Urban Geochemist ry:A st udy of t he influence of ant hropogenic activit y on t heheavy metal content of soils in t raditionally indust rial and non-industrial areas of Britain1 Applied Geochemistry,1996,11:363～370.
[17] 陈同斌,郑袁明,陈煌,等.北京市不同土地利用类型的土壤砷含量特征.地理研究,2005,24(2):229～235.
[18] Chen M,Ma L Q,Hoogeweg C G,et al. Arsenic background concent rations in Florida,U SA.Surface soils:determination and interp retation. Environmental Forensics,2001,2:117～126.
[19] Li X D,Poon C S,Pui S L1 Heavy metal contamination of urban soils and st reet dust s in Hong Kong1 Applied Geochemist ry,2001,16:1361～1368.
[20] Charleswort h S M,Lees J A1 The dist ribution of heavy metals in depo sited urban dust s and sediment s,Covent ry,England. Environmental Geochemistry and Healt h,1999,21:97～115.
[21] Facchinelli A,Sacchi E,Mallen L1 Multivariate statistical and GIS2based app roach to identif y heavy metal sourcesin soils. Environmental Pollution,2001,114:313～324.
[22] Williams C H,David D J. The effect of superp hosp hate on t he cadmium content of soils and plant s. Aust. J. SoilRes.,1973,11:43～56.
[23] Williams C H,David D J1 The accumulation in soil of cadmium residues f rom p ho sp hate fertilizers and t heir effecton t he cadmium content of plant s. Soil Sci1,1976,121:86～93.
[24] 鲁如坤,时正元,熊礼明.我国磷矿磷肥中镉的含量及其对生态环境影响的评价.土壤学报,1992,29:150～157.
[25] 杨惠芬,李明元,沈文.食品卫生理化检验标准手册.北京:中国标准出版社,1997.126.
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