Soil Acidity and Sustainable Utilization of Land Resource
YANG Yan et al (College of Resources and Environment,Sichuan Agricultual Unviersity,Yaan,Sichuan 625014)
The sustainable use of land resource is one of the key issues,which connect to the social economy development and humanity's survival. In this paper,we took Chengdu Plain as an example to study the index of soil acidity and analyze its relationship with soil fertility level and entironment. After discussing the negative effect of soil acidity on the land sustainable use,according to the reasons,which caused the soil acidity,we proposed some reasonable approaches to control the process of soil acidization and prevent the soil from acidification.