城市化过程对土壤资源影响研究进展

世界范围内的快速城市化过程对土壤资源的质与量都产生了深刻影响.作为一种不可再生性自然资源,土壤在我国快速城市化过程中的强烈人为活动影响下发生功能上的转化、弱化甚至消失.城市及其周边地区的土壤景观、各种土壤过程都明显异于传统的土壤质量演变规律.与农业生态系统相比,城市生态系统更加复杂,城市化过程中土壤演变研究的挑战性也更大.深入开展城市化过程中土壤质、量响应及其生态环境效应的系统研究意义重大.

Advances in impact assessment of urbanization on soil resources

Sweeping urbanization across the globe has a special meaning in China,where unprecedented large urban populations and comparatively limited soil resources are no match. Soil landscape and soil processes are spatio-temporally altered and have be- come significantly different from that of pure,natural agricultural ecosystems,due primarily to intensive anthropogenic activities of rapid urbanization. Impact of urbanization on soil resources and the environment are reflected by increasing conflict between urban and agricultural land-use,the risk of potential pollution from urban cosmopolis,and the shift of agricultural structure and soil utilization. Optimal management practices,with minimal urbanization impact on eco-environments should be explored for sustainable development of cities and city soil resources.