日本地球惑星科学連合2023年大会

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[E] オンラインポスター発表

セッション記号 A (大気水圏科学) » A-GE 地質環境・土壌環境

[A-GE28] Energy-Environment-Water Nexus and Sustainable Development

2023年5月26日(金) 10:45 〜 12:15 オンラインポスターZoom会場 (6) (オンラインポスター)

コンビーナ:川本 健(埼玉大学大学院理工学研究科)、Yonghong Hao Hao(Tianjin Normal University)、Jet-Chau Wen(National Yunlin University of Science and Technology)、Wenke Wang(Changan University)

現地ポスター発表開催日時 (2023/5/25 17:15-18:45)

10:45 〜 12:15

[AGE28-P13] Spatiotemporal variations of Blue and Green Water Resources in the Meijiang River Basin, China

*Youcun Liu1、Shuyue Yang2、Lihong Meng3、Tao Liu1 (1.Jiaying University、2.Qinghai Minzu University、3.Gannan Normal University)

Water is the source of all life on Earth. Blue water and green water are important for water resource evaluation and are also essential for the efficient use of water resources. By constructing a SWAT model to simulate the spatiotemporal evolution of blue water and green water resources in the Meijiang River Basin from 2008 to 2018, this paper explored the spatiotemporal distribution characteristics of blue water and green water and evaluated the change trend of the green water coefficient. The results showed that: 1) the average amount of blue water resources per unit area in the Meijiang River Basin was 921 mm, accounting for 43% of the total water resources; the amount of green water resources was 1,232 mm, accounting for 57% of the total water resources. 2) blue water quantity and precipitation were highly positively correlated, and the overall change in green water quantity had been relatively stable. Water quantity of green also showed a positive correlation with precipitation within a certain range, while the green water coefficient and precipitation showed a highly negative correlation; 3) precipitation and other climatic conditions were the decisive factors affecting the amount of blue water resources in the basin, whereas the nature of the underlying surface, such as the vegetation or land use, altitude, and topography, was the main factor affecting the green water volume of the watershed.