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对樟树人工林生态系统的大气降水、树干茎流、穿透水、林内地表径流、地下径流中N、P、S iO2、K、C a、M g、Cu、F e、Zn、M n共10种养分元素含量进行了测定。结果表明:不同月份大气降水养分元素含量不同,各元素各月平均含量按大小排序为C a>S iO2>Zn>NH4-N>K>NO3-N>F e>M g>M n>P>Cu。大气降水经过林冠层后,树干茎流、林内穿透水中各养分元素含量变化基本一致,均表现季节动态变化,大多数元素含量增加。树干茎流中各元素含量按大小排序为K>C a>NH4-N>S iO2>M g>NO3-N>Zn>M n>F e>P>Cu;林内穿透水中各元素含量按大小排序为C a>K>Zn>S iO2>NH4-N>NO3-N>M g>M n>F e>P>Cu。树干茎流中S iO2、F e、Zn,穿透水中F e为负淋溶,其余各元素浓度有所增加,在这2项中,除NH4-N、K外,树干茎流中NO3-N、P、S iO2、C a、Cu、F e、Zn、M n养分元素的富集作用均小于穿透水。
The effects of N, P, S iO2, K, C a, M g, Cu, Fe, Zn, Mn on the runoff of the camphor plantation ecosystem were studied. A total of 10 nutrient elements were determined. The results showed that the content of nutrient elements in the precipitation was different in different months, and the average contents of the elements in each month were sorted according to the size: C a> S iO2> Zn> NH4-N> K> NO3-N> F e> M g> M n> P > Cu. Atmospheric precipitation through the forest canopy, the trunk stem flow, penetration of forest nutrient content of the changes are basically the same, are showing seasonal dynamics, most of the elements increased. The contents of various elements in the stem-stem stream were sorted according to the order of K> C a> NH4-N> S iO2> M g> NO3-> Zn> M n> F e> P> The order of the sizes is C a> K> Zn> S iO2> NH4-N> NO3-N> M g> M n> F e> P> Cu. The S iO2, F e, Zn in the stem-stem stream was negatively leached in the permeate water, and the concentrations of other elements increased. In addition to NH4-N and K, NO3- The enrichment of N, P, Si02, Ca, Cu, Fe, Zn, Mn nutrients was less than that of penetrating water.