img

官方微信

高级检索

中国沙漠 ›› 2024, Vol. 44 ›› Issue (2): 196-206.DOI: 10.7522/j.issn.1000-694X.2023.00099

• • 上一篇    下一篇

基于GRACEGLDAS数据的黄河流域甘肃段地下水可持续性研究

康小虎1(), 李琳2, 孙超2,3, 刘鹄2   

  1. 1.甘肃省农村饮水安全管理办公室,甘肃 兰州 730000
    2.中国科学院西北生态环境资源研究院,甘肃 兰州 730000
    3.甘肃省水利科学研究院,甘肃 兰州 730000
  • 收稿日期:2023-08-14 修回日期:2023-11-14 出版日期:2024-03-20 发布日期:2024-03-19
  • 作者简介:康小虎(1984—),男,甘肃徽县人,高级工程师,主要从事农村饮水和水资源方面研究。E-mail: kangxiaohu66@163.com
  • 基金资助:
    甘肃省水利厅委托项目(E339040201);西部之光青年学者A类项目(29Y92962)

Evaluation of groundwater sustainability in the Yellow River Basin of Gansu Province using GRACE and GLDAS Data Products

Xiaohu Kang1(), Lin Li2, Chao Sun2,3, Hu Liu2   

  1. 1.Rural Drinking Water Safety Management Office of Gansu,Lanzhou 730000,China
    2.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.Gansu Institute of Water Conservancy,Lanzhou 730000,China
  • Received:2023-08-14 Revised:2023-11-14 Online:2024-03-20 Published:2024-03-19

摘要:

黄河流域甘肃段水资源供需矛盾突出,地下水环境承载负荷较高,针对该区域开展地下水可持续性评估可为全省乃至整个黄河流域的高质量发展提供重要参考。在地下水监测数据验证的基础上,利用GRACE、GLDAS数据对黄河流域甘肃段2002—2022年的地下水储量变化量与地下水可持续性进行了分析。结果表明:期间区域地下水储量季节性波动显著、年际变化较大,地下水储量呈下降趋势;地下水系统整体可靠性和脆弱性较高,可恢复性与可持续性较低。空间上,区域内地下水系统的可持续性指数(Sustainability Index,SI)呈现整体降低、区域增加和较高持续性区域范围缩减、中心转移的特点(SI为0~0.5);时间上,研究期间可持续性指数呈波动下降趋势,但下降速率持续放缓,部分年份可持续性指数有所升高。影响地下水可持续性下降的主要因素为人类活动开采消耗地下水(如农田灌溉和工业用水);政策因素(如水资源管理举措)在一定程度上减缓了地下水下降速率与持续恶化趋势。未来应考虑采用节流保护、开源控制的举措,促进黄河流域甘肃段地下水资源可持续性的逐步提升。

关键词: 黄河流域, 甘肃省, 地下水, 可持续性, GRACE, GLDAS

Abstract:

The contradiction between supply and demand of water resources is prominent in the Yellow River Basin of Gansu Province, which in turn exerts considerable pressure on the groundwater environment. Assessing groundwater sustainability for this area provides an important guidance for the high-quality development of the local and even the whole basin. Based on GRACE, GLDAS and groundwater monitoring well data, the variation of groundwater reserves and groundwater sustainability during 2002-2022 were analyzed for this region. The findings indicate significant seasonal fluctuations, substantial year-to-year variances, and a declining trend in the regional groundwater supplies during this period. Groundwater sustainability is generally low, with a tendency to be higher in the north and south and lower in the east and west of this region (SI=0~0.5). The groundwater sustainability index (SI) for 2002-2022 exhibits a lowering tendency throughout that period of time, with overall high reliability, poor resilience, and high vulnerability. The intensive and extensive exploitation of groundwater for human activities (such as agricultural irrigation and industrial water use) are the key factors contributing to the loss of groundwater sustainability. The rate of groundwater decline and ongoing deterioration has been alleviated by policy initiatives, such as water restrictions and ecological restoration. In the future, the strategies of "saving water rather than withdrawing more for ecological conservation" should be considered to promote the sustainable improvement of groundwater resources in the Gansu section of the Yellow River Basin.

Key words: Yellow River Basin, Gansu Province, groundwater, sustainability, GRACE, GLDAS

中图分类号: