| REGIONAL DIFFERENTIATION OF CRITICAL CONCENTRATION OF ARSENIC(As) AND CADMIUM (Cd) IN MAIN SOIL TYPES OF CHINA |
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| 作者姓名： | Luo Jinfa Xia Zenglu |
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| 作者单位： | Institute of Geography，CAS，Beijing 100101People's Republic of China |
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| 摘 要： | 1CriticalconcentrationofpollutedheaVyn1etalsish1eallowableconcel1trationofheavymetalsinsoilsItisnotonIythecriticalindexofvanousbiologicalandenvironmentalehaofmetalelementsinsoils,blltalsothebasisforworkingoutti1estandardofsoilenvirorunatalquality,anddefilungthesoilenvironn1entalconcentration.Attentionwasthuspaidtoenvironmotalconservationathomeandabroad.Althoughtherearen1anyrePorts2-4]oneffeCtsofsinglesoilpollutant,yCttherearefewrePoftsoncompansonsofn1etalelema1tcnticalconcatrationinsoilsofd…
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REGIONAL DIFFERENTIATION OF CRITICAL CONCENTRATION OF ARSENIC (As) AND CADMIUM (Cd) IN MAIN SOIL TYPES OF CHINA |
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| Luo Jinfa Xia Zenglu.REGIONAL DIFFERENTIATION OF CRITICAL CONCENTRATION OF ARSENIC(As) AND CADMIUM (Cd) IN MAIN SOIL TYPES OF CHINA[J].Journal of Geographical Sciences,1996(2). |
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| Authors: | Luo Jinfa Xia Zenglu |
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| Abstract: | Studies of critical concentration distribution features of polluted elements of Cd and As in main soil types of China, such as laterite, crimson soil, purplish soil, yellow brown soil, brunisolic soil, black soil, cinnamon soil and sierozem revealed that soil types vary in different zones, so do their critical concentrations.The critical concentration has a zonal differentiation with the distribution of soil types from south to north, and from east to west. The critical concentration of Cd increases from south to north (yellow brown soil,brunisolic soil and cinnamon soil),and from east to west (black soil and sierozem). This coincides With changes of climate zones and soil zones. On the contrary, the critical concentration of Asdecreases from south to north and from east to west. |
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| Keywords: | soil types critical level As Cd regional differentiation |
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