Growth Responses of Trees to Micronutrients and Their Feedback Effect in Various Soil-Forest Ecosystems of Taihu Lake Region

摘要

Vector analysis technique and ecological sequential comparison methods were adopted to study tree growth response to the micronutrients, B, Mo, Cu, Zn, Fe, and Mn, in soils derived from various parent materials in the forest area of Taihu Lake region in southeast China. The results showed that the dry weight of individual current-year needle of Chinese fir(Cunninghamia lanceolata)grown on the soil derived from granite parent rock was increased by 8/100 and 13/100 in comparison with that grown on the soils derived from sandstone and ash-tuff parent rock, respectively.