摘要
为更好指导赣江流域水资源合理开发和可持续利用,采用水文学方法确定了赣江干流及重要支流控制断面生态流量,定量评估了流域各分区地表水资源可利用量。研究表明:(1)赣江干流各断面生态流量为44.8~281.0 m^(3)/s,占年均流量的11.7%~13.6%。支流断面生态流量为6.03~19.80 m^(3)/s,占年均流量的9.4%~10.0%。各断面近10 a日均流量满足程度均在92%以上,可作为生态流量管控依据。(2)外洲以上赣江流域年均地表水资源可利用量224.2亿m^(3),可利用率29.6%。各主要支流年均地表水资源可利用量7.1亿~22.1亿m^(3),可利用率19.7%~29.3%,流域下游水资源可利用率总体高于中上游。随着流域洪水资源高效利用能力提升,水资源可利用量可进一步增加。研究成果可为指导流域干支流水量分配与调度,加强水资源开发利用与保护提供参考依据。
To better guide the rational development and sustainable utilization of water resources,the hydrological method was used to determine the ecological flow of the main stream and important tributaries of the Ganjiang River,and the available surface water resources in each sub-region was quantitatively evaluated.The results show that:(1)The ecological flow of each section of Ganjiang River is 44.8~281m^(3)/s,accounting for 11.7%~13.6%of the annual flow,while that of tributaries is 6.03~19.80 m^(3)/s,accounting for 9.4%~10%of the annual flow.The average daily flow satisfaction of each section in the past 10 years is above 92%,which can be used as the basis for ecological flow control.(2)The annual average available surface water resources in the Ganjiang River Basin above Waizhou is 22.42 billion m^(3) with the availability of 29.6%,while that in each major tributary is 0.71~2.21 billion m^(3) with the availability of 19.7%~29.3%.The water resources availability in the downstream is generally higher than that in the middle and upper reaches.With the improvement of the efficient utilization of flood resources,water resources availability can be further increased.The results can provide a reference for guiding the water distribution and scheduling in the watershed,and strengthening the development,utilization and protection of water resources.
作者
邴建平
邓鹏鑫
吴智
贾建伟
王栋
BING Jianping;DENG Pengxin;WU Zhi;JIA Jianwei;WANG Dong(Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China;Jiangxi Hydrology Monitoring Center,Nanchang 330000,China)
出处
《人民长江》
北大核心
2023年第2期127-131,170,共6页
Yangtze River
基金
国家重点研发计划项目(2019YFC0408901)。
关键词
地表水资源
生态流量
可利用量
空间分布
赣江流域
surface water resource
ecological flow
available quantity
spatial distribution
Ganjiang River Basin
