Research advances on eco-chemical behaviors and toxicological effects of cadmium in root-soil interface

Abstract

Abstract: Many active substances such as organic acids and enzymes excreted by living plant roots could induce a great difference of Eh and pH values between root-soil interface and non-rhizosphere soil,forming a special root-soil interface miniature environment.As a mini-type ecological area with most frequent exchanges of substances,root-soil interface plays a crucial role in their absorption,transformation,migration and eco-toxicological effects.In this paper,the eco-chemical behaviors of Cd in root-soil interface affected by the change of pH,Eh and root secretion,and its eco-toxicological effects on microorganisms and enzymes in root-soil interface were reviewed,based on the related research advances in recent decade.The shortages in relevant fields were pointed out,and the scientific problems to be researched in the future were suggested.

Key words: Cadmium, Root-soil interface, Eco-chemical behavior, Eco-toxicological effect

CLC Number:

X171.5

JIN Caixia, ZHOU Qixing, SUN Ruilian, REN Liping . Research advances on eco-chemical behaviors and toxicological effects of cadmium in root-soil interface[J]. Chinese Journal of Applied Ecology, 2005, 16(8): 1553-1557.

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