期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 553, 期 -, 页码 276-284出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.02.099
关键词
Tibetan Plateau; Riverine outflows; Nitrogen balance; Climate change
资金
- National Natural Science Foundation of China [41130535, 41501517]
- open fund of Ministry of Education Laboratory for Earth Surface Processes, Peking University
The Tibetan Plateau (TP) has been the subject of study on water circulation and global climate change. Given the environmental processes related to water outflows, there could be massive nutrient losses in the land surface of TP. In this study, we analyzed the nitrogen discharges of the major rivers flowing out of the TP based on the 5 year monitoring data. According to our calculation, the majority of nitrogen outflows were discharged through the upper Yangtze River and upper Huanghe River, representing -29% and -17% of total riverine outflows, respectively. In the entire nitrogen defici. in TP land surface, about 2.7 x 10(5) Mg/year was lost through riverine discharges. Due to the global warming, the changes of hydrologic processes in TP would possibly accelerate the riverine nitrogen outflows in the future. (C) 2016 Elsevier B.V. All rights reserved.
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