Base on the study of Cu and Zn contents of typical arborous mire

scrub mire and herb mire of upper reaches of Gongbiela river watershed in the northern of Xiaoxing'anling

the results showed that the total Cu content appeared scrub mire > arborous mire >herb mire

but the valid Cu content showed arborous mire >scrub mire >herb mire

and at the meantime the characteristic of valid Cu content in the soil layer showed C layer >B layer >A layer;The content of total Zn in the different types of mire was insignificant

but the valid Zn content showed herb mire >scrub mire >arborous mire.The seasonal fluctuation of the surface soil total Cu content of scrub mire and arborous mire appeared a single peaked curve

but it showed great fluctuation in herb mire.There existed a similar trend for seasonal fluctuation of total Zn among three different types of mire

i.e.

was the total Zn in the different soil layers tend to increase wavily.The soil pH had a very significant correlation with soil Cu and Zn contents

but the content of organic matter didn't.