The effects of global warming on purification processes of Tongzhou section of Beiyun river
ZHANG Zhi-ming1,2, WANG Xiao-yan2, MA Wen-lin1, ZHANG Jun-zhi1, PAN Run-ze1, YANG Ruo-zi3
1. Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China; 3. Beijing Municipal Climate Center, Beijing 100089, China
Abstract：In order to quantify the effect of temperature changes occurred by climate change on self-purification capacity of urban river in the future, both RCP4.5and RCP8.5-the two scenarios of climate change which were mentioned in CMIP5, and the WASP module were applied to simulate and predict DO, CBOD, nitrate nitrogen and ammonia nitrogen in Tongzhou section of Beiyun river. With the simulation result, the internal transformation processes of the above factors by responsiveness of each sub-modules were analyzed. It showed that:firstly, up to 2050, the concentration of nitrate nitrogen in the all year round and the concentration of ammonia nitrogen in April-December would increase gradually, but the concentration of ammonia nitrogen would decease in January-March of Tongzhou section of Beiyun river, which was caused by climate change; secondly, the effect on water quality caused by climate change was a comprehensive result of multiple processes, in other words, even if the water quality had no obvious change, the process of its formation mechanism might be large; and thirdly, up to 2050, the process of phytoplankton growth, denitrification process and mineralization of ammonia nitrogen of water self-purification would be affected heavily by climate change.
张质明, 王晓燕, 马文林, 张君枝, 潘润泽, 杨若子. 未来气候变暖对北运河通州段自净过程的影响[J]. 中国环境科学, 2017, 37(2): 730-739.
ZHANG Zhi-ming, WANG Xiao-yan, MA Wen-lin, ZHANG Jun-zhi, PAN Run-ze, YANG Ruo-zi. The effects of global warming on purification processes of Tongzhou section of Beiyun river. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 730-739.
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