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- Title
SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM MEASUREMENTS AND MODELING.
- Authors
Jianlin SHEN; Yong LI; Yi WANG; Yanyan LI; Xiao ZHU; Wenqian JIANG; Yuyuan LI; Jinshui WU
- Abstract
The subtropical hilly region of China is a region with intensive crop and livestock production, which has resulted in serious N pollution in soil, water and air. This review summarizes the major soil N cycling processes and their influencing factors in rice paddies and uplands in the subtropical hilly region of China. The major N cycling processes include the N fertilizer application in croplands, atmospheric N deposition, biological N fixation, crop N uptake, ammonia volatilization, N2O/NO emissions, nitrogen runoff and leaching losses. The catchment nutrients management model for N cycle modeling and its case studies in the subtropical hilly region were also introduced. Finally, N management practices for improving N use efficiency in cropland, as well as catchment scales are summarized.
- Subjects
FERTILIZERS; RICE; PADDY fields; UPLANDS; GREENHOUSE gases
- Publication
Frontiers of Agricultural Science & Engineering, 2022, Vol 9, Issue 3, p407
- ISSN
2095-7505
- Publication type
Article
- DOI
10.15302/J-FASE-2022448