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杨树落叶前后重金属元素内外迁移循环规律研究-应用生态学报
1996 4 7 2
CHINESE JOURNAL OF APPLIED ECOLOGY,Apr. 1996,7(2)201206
*
余国营 吴燕玉 王 新 (, 110015)
,
Zn Cu As Pb Cd
. , 848%
AsZn ,CuPbCd , ZnAs
40%, , 1727%.
Cd Pb Cu
.
Transferring and cycling of heavy metals in and out of poplar tree before and after its
. , ( ,
leaf fallen Yu Guoying Wu Yanyu and Wang in I ns tit ute of Ap p lied E cology A -
, 110015) .- . . . ., 1996, 7( 2) :201206.
cadem ia S inica Sheny ang Ch in J A pp l E col
The transferring of heavy metals in poplar tree during its leaf fallen mainly occurs in the
parts of leaf-branch, root and trunk. 848% of As and Zn in leaf is transferred to bark
and timber and the storage of Cu Pb and Cd is increased T he internal cycling rate of, , .
As and Zn occupies 40%, and the external one of Cd Pb and Cu occupies, 1727% of
their storage. The purification efficiency of soil heavy metals by plants is also discussed in
this paper.
, , , .
Key words Poplar tree Heavy metals Cycling Purification efficiency
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