根-土界面的微生态过程与有机污染物的环境行为研究

Micro-Ecological Processes in Root-Soil Interface and Their Impacts on Environmental Behavior of Organic Pollutants

土壤-植物系统是地球生态系统中与人类生存与健康关系最为密切的亚系统。该系统中有机污染物的运移必须历经根-土界面多层次的微生态过程的控制。这些微生态过程涉及到系统中许多生物、生物化学和物理化学反应机理,与土壤中污染物迁移转化及其归宿等环境行为具有密切的关系。理解这些微生态过程及其对有机污染物环境行为的影响,对提高作物生长、改善土壤环境质量和提高农产品品质安全具有直接的理论和实践指导意义。

The plant-soil subsystem is one of the most important terrestrial ecosystems relating to the human health. The movement of organic pollutants in this subsystem is dominated by various micro-ecological processes on root-soil interface. These micro-ecological processes are mostly driven by physio-chemical and biological changes induced by root-soil interactions, such as root exudation of organic anions and protons. In order to safeguard the sustainable production of safety food and to maintain the environmental quality, it is essential to understand the mechanisms of these micro-ecological processes. This paper presents a personal overview on the recent achievements in this research field with the aim of provoking further in depth research in the near future.