2022年鄱阳湖极端干旱对洪泛区地下水文情势的影响

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (2148 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要以鄱阳湖洪泛区湿地为研究区,运用FEFLOW建立地下水流数值模型,定量评估2022年极端干旱影响下地下水文条件的时空响应特征.结果表明,2022年极端干旱对鄱阳湖的持续影响主要发生在下半年7~12月份,极端干旱会导致鄱阳湖洪泛区地下水位大幅度下降以及地下水流速整体加快,且两者变化情况均呈现出明显的空间异质特征.总体上,极端干旱影响的地下水位最大降幅可达5m左右,地下水流速增加幅度约为正常年份的1~2倍,极端干旱的强烈影响区域主要分布在洪泛区的东北部.从原因上分析,降水对地下水的补给量明显减少以及地下水向湖泊的排泄量显著增加,这些均是极端干旱条件下洪泛区地下水储量减少的主要原因.从年尺度上来说,极端干旱导致洪泛区系统的地下水排泄量增加了1.62×10⁷m³,约是基准年地下水排泄量的14.5倍.鄱阳湖及其洪泛湿地作为整个流域地下水的重要排泄区和生态屏障区,本研究强调了湖泊和地下水文情势响应变化的重要性.

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	曹思佳
	李云良
	陈静
	姚静
	赵贵章
	李志萍

关键词 ：鄱阳湖洪泛湿地, 地下水, 极端干旱事件, 水文水动力, 地下水储量, 数值模拟

Abstract：The recognition and attention of groundwater in the river-lake system was done gradually strengthened. The current research used the floodplain area of Poyang Lake as our study area. We further used the FEFLOW groundwater flow model to quantitatively evaluate the spatiotemporal responses of floodplain groundwater under the extreme drought condition in 2022. The simulation results showed that the continuous impact of extreme drought on Poyang Lake in 2022 mainly occurs in the second half of the year. The extreme droughtleaded to a significant decrease of floodplain groundwater level and an overall acceleration of groundwater flow velocity in the lake’s floodplain. The decreasing trends of both the groundwater level and flow velocity exhibited an obvious spatial heterogeneity. In general, the maximum drop of groundwater levels affected by the extreme drought reaches about 5m, and the groundwater flow velocity was about once-twice than that of the normal year. In addition, extreme drought might result in a significant decline in rainfall recharge and a significant increase in groundwater discharge (into the lake), contributed to the decline of floodplain groundwater storage. On an annual scale, the extreme drought might lead to increasing groundwater discharge of 16.2×10⁶m³ in the study area, which was about 14.5 times than that of groundwater discharge in the normal year. Poyang Lake and its floodplain are important drainage and ecological barrier areas of the whole basin groundwater flow system, and therefore, this study highlights the importance of lake and groundwater hydrological responses.

Key words： Poyang Lake floodplain groundwater flow simulation extreme drought event hydrological and hydrodynamic groundwater storage volume numerical simulation

收稿日期: 2023-05-12

PACS:

X524

基金资助:国家重点研发计划项目(2019YFC0409002);国家自然科学基金项目(42071036);中国科学院青年创新促进会项目(Y9CJH01001)联合资助.

通讯作者: 李云良,研究员,yunliangli@niglas.ac.cn E-mail: yunliangli@niglas.ac.cn

作者简介: 曹思佳(1998-),女,辽宁盘锦人,中国科学院南京地理与湖泊研究所硕士研究生,主要研究方向为水文地质.caosijia0412@163.com.

引用本文:

曹思佳, 李云良, 陈静, 姚静, 赵贵章, 李志萍. 2022年鄱阳湖极端干旱对洪泛区地下水文情势的影响[J]. 中国环境科学, 2023, 43(12): 6601-6610. CAO Si-jia, LI Yun-liang, CHEN Jing, YAO Jing, ZHAO Gui-zhang, LI Zhi-ping. Influence of extreme drought in 2022 on groundwater hydrological regime in the Poyang Lake floodplain area. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(12): 6601-6610.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2023/V43/I12/6601

[1] Zheng C M, Guo Z L. Plans to protect China's depleted groundwater[J]. Science, 2022,375(6583):827.
[2] Erler A R, Frey S K, Khader O, et al. Evaluating climate change impacts on soil moisture and groundwater resources within a lake- affected region[J]. Water Resources Research, 2019,55(10):8142-8163.
[3] Yang J, Yu Z, Yi P, et al. Evaluation of surface water and groundwater interactions in the upstream of Kui river and Yunlong lake, Xuzhou, China[J]. Journal of Hydrology, 2020,583:124549.
[4] Bonanno E. Water flow and solute transport in the stream corridor: hyporheic flow directions, parameters identifiability and transient storage processes[D]. Technische Universität Wien, 2023.
[5] Ascott M, Brauns B, Crewdson E, et al. A conceptual model of the groundwater contribution to streamflow during drought in the Afon Fathew catchment, Wales[J]. British Geolooica Survey, 2023,11:64.
[6] Fildes S G, Doody T M, Bruce D, et al. Mapping groundwater dependent ecosystem potential in a semi-arid environment using a remote sensing-based multiple-lines-of-evidence approach[J]. International Journal of Digital Earth, 2023,16(1):375-407.
[7] David J, Cooper J S. Sanderson D I, et al. Effects of long-term water table drawdown on evapotranspiration and vegetation in an arid region phreatophyte community[J]. Journal of Hydrology, 2005,325(1):21-34.
[8] Sébastien L Peter G, Cook A, et al. Groundwater use by vegetation in a tropical savanna riparian zone (Daly River, Australia)[J]. Journal of Hydrology, 2005,310(1):280-293.
[9] Zhang D, Chen P, Zhang Q, et al. Copula-based probability of concurrent hydrological drought in the Poyang lake-catchment-river system (China) from 1960 to 2013[J]. Journal of Hydrology, 2017, 553:773-784.
[10] Zhang Q, Ye X C, Adrian D et al. An investigation of enhanced recessions in Poyang Lake: Comparison of Yangtze River and local catchment impacts[J]. Journal of Hydrology, 2014,517:425-434.
[11] Wang Z C, Yang Y, Chen G, et al. Variation of lake-river-aquifer interactions induced by human activity and climatic condition in Poyang Lake Basin, China[J]. Journal of Hydrology, 2021,595: 126058.
[12] Zhou P P, Wang G C, Mao H R, et al. Numerical modeling for the temporal variations of the water interchange between groundwater and surface water in a regional great lake (Poyang Lake, China)[J]. Journal of Hydrology, 2022,610:127827.
[13] Liu B, Li Y L, Jiang W Y, et al. Understanding groundwater behaviors and exchange dynamics in a linked catchment-floodplain-lake system[J]. The Science of the Total Environment, 2022,853:158558.
[14] Yang Y, Wang Z C, Xie Y Q, et al. Impacts of groundwater depth on regional scale soil gleyization under changing climate in the Poyang Lake Basin, China[J]. Journal of Hydrology, 2018,568:501-516.
[15] Li Y L, Zhang Q, Yao J, et al. Hydrodynamic and Hydrological Modeling of the Poyang Lake Catchment System in China[J]. Journal of Hydrologic Engineering, 2014,19(3):607-616.
[16] Li Y L, Cao S J, Yu L N, et al. Quantifying the impacts of a proposed hydraulic dam on groundwater flow behaviors and its eco- environmental implications in the large Poyang Lake-floodplain system[J]. Journal of Environmental Management, 2023,336:117654.
[17] 曹思佳,李云良,李宁宁,等.鄱阳湖典型洪泛区地下水数值模拟研究[J]. 湖泊科学, 2023,35(1):298-312. Cao S J, Li Y L, Li N N, et al. Groundwater numerical simulation in the typical floodplain area of Poyang Lake[J]. Lake Science, 2023, 35(1):298-312.
[18] 陈静,李云良,周俊锋,等.鄱阳湖洪泛区碟形湖湿地系统地表-地下水交互作用[J]. 湖泊科学, 2021,33(3):842-853. Chen J, Li Y L, Zhou J F, et al. Assessing surface water-ground water interactions in the seasonal lake-wetland system of Lake Poyang[J]. Journal of Lake Sciences, 2021,33(3):842-853.
[19] 周佳伟,陈晓宏.气象、水文和社会经济干旱的特征与响应关系[J]. 水文, 2022,42(4):18-22. Zhou J W, Chen X H. Characteristics and response relationship of meteorological, hydrological and socioeconomic droughts[J]. Journal of china hydrology, 2022,42(4):18-22.
[20] 马川惠,黄生志,黄强.渭河流域水文干旱历时-烈度相依结构动态变化与驱动力分析[J]. 水利学报, 2022,53(10):1180-1193. Ma C H, Huang S Z, Huang Q. Agricultural drought assessment based on the coupled hydrology-crop growth model and CWAPI[J]. Shuili Xuebao, 22,53(10):1180-1193.
[21] Yin Z, Zhou B, Duan M, et al. Climate extremes become increasingly fierce in China[J]. The Innovation, 2023,4(2):100406.
[22] 胡振鹏.2022年鄱阳湖特大干旱及防旱减灾对策建议[J]. 中国防汛抗旱, 2023,33(2):1-6,39. Hu Z P. Emergency monitoring and analysis of unmanned aerial vehicles for the breach of the Raoyang River in Liaoning Province in 2022[J]. China Flood & Drought Management, 2023,33(2):1-6,39.
[23] Kummu M, Tes S, Yin S, et al. Water balance analysis for the Tonle Sap Lake-floodplain system[J]. Hydrological Processes, 2014,28(4): 1722-1733.
[24] Johansen O M, Andersen D K, Ejrn S R, et al. Relations between vegetation and water level in groundwater dependent terrestrial ecosystems (GWDTEs)[J]. Limnologica. 2017,68:130-141.
[25] Li M Y, Deng J M, Ling H B, et al. Constructing a new irrigation model for desert riparian forests based on response of canopy EVI loss and tree rings growth to groundwater fluctuation[J]. Ecological Indicators, 2023,148:110060.
[26] 谭志强,张奇,李云良等.鄱阳湖湿地典型植物群落沿高程分布特征[J]. 湿地科学, 2016,14(4):506-515. Tan Z Q, Zhang Q, Li Y L, et al. Distribution of typical vegetation communities along elevation in Poyang Lake Wetland[J]. Journal of Lake Sciences, 2016,14(4):506-515.
[27] Chen M H, Zeng S D, Jiang B, et al. The comprehensive evaluation of how water level fluctuation and temperature change affect vegetation cover variations at a lake of ecological importance (Poyang Lake), China[J]. Ecological Indicators, 2023,148:110041.
[28] 张超,李言阔,任琼,等.鄱阳湖夏季极端水位条件下越冬水鸟多样性、空间分布及其保护对策[J]. 湖泊科学, 2022,34(5):1584-1599. Zhang C, Li Y K, Ren Q, et al. Species diversity, spatial distribution and protection strategies of wintering water birds after extreme summer flood in Lake Poyang[J]. Journal of Lake Sciences, 2022, 34(5):1584-1599.
[29] Yao J, Gao J F, Yu X B, et al. Impacts of a proposed water control project on the inundation regime in China's largest freshwater lake (Poyang Lake): Quantification and ecological implications[J]. Journal of Hydrology: Regional Studies, 2022,40:101024.
[30] Zhao G Z, Li Y L. Effects of a proposed hydraulic project on the hydrodynamics in the Poyang Lake floodplain System, China[J]. International Journal of Environmental Research and Public Health, 2021,18(15):8072.