| Liquidambar is a fine timber specie and a major landscaping tree,at the same time it is an important ecological forest tree specie for it's obvious ecological benefits. It is can improve their operational level by studying Liquidambar productivity and distribution of nutrients. It is have a great significance for the sustainable management of Liquidambar In this paper, we used the methods of standard-analysis (tree) and the kind of harvest (shrubs, herbs) to measure and analyze the biomass, the productivity, the accumulation and distribution of nutrients of the Plantation Liquidambar,21 years old. The results are showed as follows:The biomass of Liquidambar Plantation is 70.97 kg, which accounted for 60.19percent of trunk,9.41% of bark,8.61% of branches, roots accounted for 17.61%, leaves at least, a mere 4.81 percent, the reasons for the small biomass of leaves is the stand density is too small, having limited spaces. The size of trends of biomass components is:the trunk>roots> branches> bark> leaves. Root biomass reached 12.05kg,17.61 percent of the whole-plant biomass. Root biomass mainly distributed in the root head, the percentage reached more than 85 percent,12.24% of large roots, coarse roots and fine roots were accounted for 1.26 percent and 0.57 percent.The total biomass of the plantation ecosystem Liquidambar is 159.55 t/hm2,which density is 2,175/hm2. The biomass of tree layer is 154.37 t/hm2 occupy the total biomass of the forest ecosystems more than 92 percent, indicates that the Liquidambar grips on the woodland and space fully, Because of living undergrowth is herbaceous layer mainly, the biomass is low, accounting for only 0.2%; litter layer account for 3.05%. The leaf area index is 3.64,the ratio of non-photosynthetic organs and organ photosynthesis reached 19.80, that indicates Liquidambar leaves are fewer, but more dry matter is product, leaf photosynthetic is efficiency.The net primary productivity of Liquidambar tree plantation ecosystem is 14.41 t.hm-2.a-1; the net productivity of tree trunks is the distribution rate reached 30.68 percent, showing higher productivity, leaves accounting for 51.49 percent; the rate is91.33%on the part of the distribution, equivalent 6.2 times to the part of the ground floor, has an absolute advantage. The productivity organ size order:trunk> leaves> roots> branches.The soil organic matter content of Stand is a layer> b-layer> c layer (a layer 0 to 15 cm, b layer 15～30 cm, c layer 30～45 cm).The order for the abundance elements of soil is:K>N>Ca>Mg>P. The order of trace elements in the soil layer is:Fe>Mn >Zn>Pb>Ni>Cu>Cd.The order of abundance elements of all levels in Liquidambar plantation ecosystem is:living beings>litter layer>tree layer> soil layer. Their size is:34.177g·kg-1 26.484g·kg-1,19.323 g·kg-1,5.884 g·kg-1.The order of trace elements at all levels is: soil layer> litter layer> tree layer> live in the layer. Their size is 1 901.705 mg·kg-1, 1 345.203 mg·kg-1,720.327 mg·kg-1,674.845 mg·kg-1.The enrichment capability of Liquidambar on soil nutrient is inconsistent. Leaves have the strongest enrichment capability of elements except Ca, but tree trunks have a weakest enrichment capability. The trends of enrichment capability of abundance elements are:Ca>Mg>N>P>K. The trends of enrichment capacity of trace elements to all organs of tree layer are:Cu>Mn>Pb>Zn>Cd>Ni>Fe.The spatial distribution of Liquidambar plantation ecosystem in nutrients is:Tree layer> litter layer> living undergrowth layer. The total accumulation of abundance elements is 1 878.841 kg·hm-2, the tree layer has a largest accumulation of abundance elements, the accumulation is 1 706.045 kg·hm-2. Account for 90.80percent of the whole accumulation, followed by the litter layer, only 8.63percent, the accumulation of abundance elements is the smallest in the living undergrowth layer, accounting for 0.57 percent. The total accumulation of abundance elements in Liquidambar ecosystem as follows:Ca>N>K>Mg>P; the total accumulation of trace elements is:75 735.49 g·hm-2, the accumulation of trace elements in tree layer is the largest, accounting for 91.35 percent, followed by the litter layer, accounting for 8.37 percent, to live by the minimum, accounting for 0.28%, we can see that the accumulation of trace elements in tree layer is very high. The trends of accumulation of various trace elements are:Mn>Fe >Zn>Cu>Pb>Ni>Cd.The efficiency of abundance element is absorbing 21.308 kg when makes per t dry matter; the order efficiency of abundance elements on all stand organs is as follows: leaves> bark> branches> roots> trunk, the order of efficiency in using various abundance elements is:Ca>N>K>Mg>P. The efficiency of trace elements is absorbing 751.474 g at making per t dry matter; the efficiency in using trace elements on all stand organs is as follows:leaves> bark> branches> roots> trunk. The order of efficiency of stand in using trace elements is as follows:Mn>Fe>Zn>Cu>Pb>Ni> Cd.The net accumulation of abundance elements in tree layer is 69.094 kg·hm-2·a-1, the order of net accumulation of abundance elements in all stand organs is:trunk> bark > branches> roots. The net Ca accumulation is the largest in the net accumulation of all abundance elements. The order of net accumulation of all abundance elements is:Ca > N> K> Mg> P. The law of retention of the elements changing is:the canopy branches have a high accumulation rate, followed by the trunk and the ground floor have the smallest. The accumulation rate of Ca and N is the highest in same component, followed by K, Mg, P.The net accumulation of trace elements is2852.314 g·hm-2·a-1, the order of net accumulation of trace elements in all stand organs is:trunk> roots> bark > branches. The order of net accumulation of trace abundance elements is:Mn>Fe> Zn>Cu>Pb>Ni>Cd...
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