陶瓷工业污染区污染元素在8种树种中的积累与分布

Allocation and Accumulation of Pollutants in 8 Tree Species Grown in Ceramic Industry Polluted Area

摘要:

选取8种抗性较强的1年生树苗栽植于广东省佛山市陶瓷工业污染区,1.5年后对它们的生长参数、干物质量和污染元素含量进行测量,评价不同树种和器官对污染元素的积累能力。结果表明,试验地的S、Cu和Pb污染风险较大,Ni、Zn、Mn和Cr污染风险较小。单株干物质量的种间差异较大,约为198~3248 g,平均为1187 g;各器官的干物质量为:主干>枝条>粗根>叶片>细根。8种树种的S、Cu、Pb的含量分别为325~12541、0.3~19.2和0.1~11.0 μg g^-1,平均值分别为2459、6.8、3.5 μg g^-1。S、Cu、Pb的单株积累量分别为485~7008、1.2~23.7、0.6~6.8 mg,平均值分别为2367、8.0、2.9 mg。S的单株积累量以高山榕>石笔木>小叶榕>翻白叶树>银柴>银桦>傅园榕>大头茶;Cu的为高山榕>石笔木>小叶榕>银桦>翻白叶树>傅园榕>银柴>大头茶;Pb的为小叶榕>银桦>石笔木>傅园榕>翻白叶树>高山榕>大头茶>银柴。这些结果表明高山榕、石笔木和小叶榕适宜在陶瓷工业污染区进行植被恢复。

Abstract:

The accumulation and allocation of pollutants in 8 one-year-old tree speeies seedlings were studied, which were planted in ceramic industry polluted area for one and half years. The results showed that S, Cu and Pb pollutants of soil were serious, while Ni, Zn, Mn and Cr pollutants were slight. Total dry mass per plant had significant differences among 8 tree species with a range from 198 g to 3248 g, and the mean of 1187 g. The contents of S and Pb changed greatly among different tree species and organs. The contents of S, Cu and Pb in 8 tree species ranged of 325-12541, 0.3-19.2, and 0.1-11.0 μg g^-1, with the mean of 2459, 6.8, and 3.5 μg g^-1, respectively, while their accumulation per plant ranged of 485-7008, 1.2-23.7, and 0.6-6.8 mg, with the average of 2367, 8.0, and 2.9 mg, respectively. The S accumulation per plant was in order as F. altissima>T. championi>F. microcarpa>P. heterophyllum>A. dioica>G. robusta>F. microcarpa var. fuyuensis>G. axillaris; Cu: F. altissima>T. championi>F. microcarpa>G. robusta>P. heterophyllum>F. microcarpa var. fuyuensis>A. dioica>G. axillaris; Pb: F. microcarpa>G. robusta>T. championi>F. microcarpa var. fuyuensis>P. heterophyllum>F. altissima>G. axillaris>A. dioica. It suggested that F. altissima, T. championi and F. microcarpa were suitable for phytoremediation in ceramic industry polluted area.