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In order to reveal the law of risk transmission of water resources among sub-basins,in this study,for the first time,a systematic method based on risk identity-assessment-transmission is proposed,which can assess the water resources risk of each sub-basin on the spatial and temporal scale,analyze the transmission law of risk in the basin,and clarify the transfer path,direction and intensity of risk among sub-basins.By applying this method to the study on the risk of DFAA transition in the pearl river basin,the results show that the risk of DFAA in the Pearl River Basin fluctuates in various time and space,the high-risk areas are mainly located in the downstream Pearl River Delta;The value of risk transmission shows a consistent trend of increasing and decreasing changes from year to year.The upstream risk transmission value increases/decreases the transmission value of the midstream risk,the transmission of the midstream to the downstream also increases/decreases accordingly;There is no cross-basin transmission in the risk of DFAA,when the upstream drought and flood risk rate is high,the risk is transferred from upstream to downstream;When the downstream drought and flood risk rate is high,the risk is transferred from downstream to upstream.
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Basic Information:
DOI：10.20040/j.cnki.1000-7709.2021.05.004
China Classification Code:P426.616
Citation Information:
[1]TANG Meng,HE Li,LIU Jia ,et al.Law of Risk Transmission of Drought-flood Abrupt Alternation in the Pearl River Basin[J].Water Resources and Power,2021,39(05):13-16+24.DOI:10.20040/j.cnki.1000-7709.2021.05.004.
Fund Information:
国家重点研发计划(2017YFC0405900); 国家自然科学基金项目(41890824); 中国科学院战略性先导科技专项(A类)(XDA20040301)
2021-05-21
2021-05-21