关键词: 4-葡萄糖苷酶, 温度敏感性, 土壤有机碳矿化速率, 酶动力学, &beta, -1, 温带森林

Abstract: Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), as the persistent toxic organic pollutants, are easily to be deposited in soil environment, and finally enriched in human and animal bodies through biomagnification and bioaccumulation, bringing significant threat to ecosystems and human health. On the basis of expounding the environmental behaviors and pollution sources of PCDD/Fs, this paper summarized the regional characteristics of PCDD/Fs contamination and the background values and pollution control reference values of PCDD/Fs in soils, and analyzed the pollution status of PCDD/Fs in soils of China and the possible sources of PCDD/Fs. In China, six areas were seriously PCDD/Fs contaminated, i.e., Jiangxi, Guiyu of Guangzhou, the Yangtze River Delta, southern Taiwan, Taizhou of Zhejiang, and a chemical plant in Tianjin. The main pollution sources were the production and utilization of chlorinechemicals, waste incineration, and pulp production. The treatment approaches and remediation technologies for PCDD/Fs contaminated soils were recommended, including physicochemical approaches, microbial remediation, phytoremediation, and phytomicrobial remediation, and the future research directions were prospected.

Key words: soil organic carbon mineralization rate, enzyme kinetics, β-1,4-glucosidase, temperature sensitivity, temperate forest.