Chin J Plan Ecolo ›› 1988, Vol. 12 ›› Issue (4): 245-255.

• Research Articles •     Next Articles

The Contents of Chemical Elements in Robinia pseudoacacia Plantation in Beijing

Chen Ling-zhi, Kong Fan-zhi, Miao You-gui, Hu Yi-hui, Chen Qing-lang, Bao Xian-cheng   

  • Online:1988-04-10 Published:1988-04-10
  • Contact: Huang Yin-xian

Abstract: C is found to be the most abundant element in the various plants of 31-aged Robinia pseudoacacia plantation, especially in the trunk of Robinia. The leaf of Robinia has high Contents of N and Ca. K in the above-ground part of Cleistogenes caespitosa is very plentiful. The leaf of Vitex negundo var. heterophylla has much Fe. The small roots of plants are rich in A1 and Na. The leaves of Zizyphus jujuba var.spinosa contain more Mg and Mn.The accumulation of chemical elements in various layers of the plantation decreases in the order of C>Ca>N>K>Mg>P>Fe>Al>Na> Mn>Cu>Zn.The accumulation of different elements in the shrub layer is higer than those in the tree layer except C and Ca. Comparing the amount of elements in litter with which in plantation, the ratio of Na is the highest one with the higher ratio of Ca, Mn, Fe, Zn. These elements will gradually return to the soil. The ratio of P is lower, less P from litter will return to soil. The sequence of Ca>N>Mg>Fe>K>P> Na, Mn>Al>Zn>Cu is shown in soil nutrient pool. The concentration ratio of K, Al, P between plant and soil is significant.The ratio of accumulations of K, P, Al in plantation to those in soil nutrient pool is also higher. The content of K, P, Al in the soil is relatively not abundant.

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