Nitrogen in Soils of China

1. Forms and Amount of Nitrogen in Soil Wen Qi-xiao. 2. Natural 15N Abundance in Soils Xing Guang-xi, et al. 3. Mineralization of Soil Nitrogen Zhu Zhao-liang. 4. Fixation and Release of Ammonium Wen Qi-xiao, Cheng Li-Li. 5. Adsorption and Diffusion of Ammonium in Soils Chen Jia-fang. 6. Nitrification Li Liang-mo. 7. Biological Nitrogen Fixation Yao Hui-qin. 8. Denitrification Li Liang-mo. 9. Ammonia Volatilization Cai Gui-xin. 10. Nitrogen in the Rhizosphere Liu Zhi-yu. 11. Fate and Management of Fertilizer Nitrogen in Agroecosystems Zhu Zhao-liang. 12. Transformation and Management of Manure Nitrogen Cheng Li-li, Wen Qi-xiao. 13. Nitrogen Management and Environmental and Crop Quality Ma Li-shan. 14. Nitrogen Balance and Cycling in Agroecosystems of China Zhu Zhao-liang.