Effects of the Evolution of Farming System on Soil Quality in the Northern Agro-grazing Ecotone of Yinshan Mountains
The historical evolution of farming system in the northern agro-grazing ecotone of Yinshan Mountains could be divided into four stages, i.e. abandoned system, fallow system,rotation system, and intensive farming system. Each farming system had different effect on soil quality. This paper showed that the evolution of farming system had a significant influence on soil organic matter and total nitrogen, and had little influence on soil available K and available P. The soil was easy to degrade due to the fragile soil environment and difficult to restore. As the human interfered more, the organic matter, total nitrogen and soil quality decreased. Supposing a steady investment, rotation system had more influence on soil environment, especially on soil organic matter and total nitrogen than fallow system and abandoned system.
Northern agro-grazing ecotone of Yinshan Mountains Evolution of farming system Soil quality Method of replacing time with space
Gong Cheng An Pingli Pan Zhihua Qi He Zheng Dawei Liu Hui
College of Resources and Environmental, China Agricultural University, Beijing 100094, China
国际会议
北京
英文
91-99
2006-10-14（万方平台首次上网日期，不代表论文的发表时间）