1. 宁夏吴忠市盐池县水务局, 宁夏 盐池,751500
2. 宁夏大学 土木与水利工程学院,宁夏,银川,750021
3. 宁夏大学 生命科学学院,宁夏,银川,750021
纸质出版:2022
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李薛锋, 尹娟, 邱小琮. 径流季节变化对清水河河道生态环境需水量的影响[J]. 水土保持通报, 2022,42(3):23-28.
Li Xuefeng, Yin Juan, QIU Xiaocong. Effects of Seasonal Runoff Change on Eco-environmental Water Demand of Qingshui River Channel[J]. Bulletin of Soiland Water Conservation, 2022, 42(3): 23-28.
李薛锋, 尹娟, 邱小琮. 径流季节变化对清水河河道生态环境需水量的影响[J]. 水土保持通报, 2022,42(3):23-28. DOI: 10.13961/j.cnki.stbctb.2022.03.004.
Li Xuefeng, Yin Juan, QIU Xiaocong. Effects of Seasonal Runoff Change on Eco-environmental Water Demand of Qingshui River Channel[J]. Bulletin of Soiland Water Conservation, 2022, 42(3): 23-28. DOI: 10.13961/j.cnki.stbctb.2022.03.004.
[目的
]
估算清水河河道生态环境需水量,为保证清水河发挥其正常生态功能以及流域内水资源的合理配置提供依据。[方法
]
通过对清水河流域用水情况实地调查,在分析整理多年水文统计资料的基础上,考虑生态用水安全,根据清水河径流随降水时间的季节性变化特点以及流域多年水文变化特征,在空间上选取清水河干流的不同断面计算河道生态环境需水量。针对需要满足河流不同生态功能要求,分别采用Tennant法、面积定额法,90%保证率最枯月水量法等方法计算河道基础生态需水量、蒸发需水量、输沙需水量以及水体自净需水量。[结果
]
清水河河道生态环境需水量包括基础生态需水量、蒸发需水量、输沙需水量及水体自净需水量,年需水总量上游段为6.29×10
6
m
3
,中游段为6.57×10
7
m
3
,下游段为1.65×10
8
m
3
。[结论
]
清水河河道生态环境需水量与泥沙含量和水质有直接关系。泥沙含量高是清水河河道生态环境需水量高的最主要因素。
[Objective] Estimation of the eco-environmental water demand of the Qingshui River channel was carried out in order to provide a basis for ensuring normal ecological functioning and rational allocation of water resources in the basin.[Methods] The eco-environmental water demand of different sections of the main stream of the Qingshui River channel was calculated based on water consumption and an analysis of multi-year hydrological statistics. The seasonal variation characteristics of runoff along with precipitation time and the multi-year hydrological characteristics were considered in the context of ecological water security. With respect to the requirements of different ecological functions of rivers
the Tennant method
area quota method and 90% guarantee rate minimum monthly water demand method were used to calculate the basic ecological water demand
evaporation water demand
sediment transport water demand
and water self-purification water demand.[Results] The eco-environmental water demand of the Qingshui River channel included basic ecological water demand
evaporation water demand
sediment transport water demand
and self-purification water demand. The total annual water demand was 6.29×106 m3 for the upper reaches of the river
6.57×107 m3 for the middle reaches
and 1.65×108 m3 for the lower reaches.[Conclusion] The eco-environmental water demand of the Qingshui River channel was directly related to sediment content and water quality
and high sediment content was the main factor for the high eco-environmental water demand of Qingshui River channel.
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胡顺军, 顾桂梅, 李岳坦, 等.塔里木河干流流域防治耕地盐碱化的生态需水量[J].干旱区资源与环境, 2007, 21(1):145-149.
张永明, 胡顺军, 翟禄新, 等.塔里木河河道自净需水量[J].兰州大学学报(自然科学版), 2008, 44(2):22-27.
叶朝霞, 陈亚宁, 李卫红, 等.塔里木河下游断流河道最小生态流量研究[J].自然科学进展, 2008, 18(5):531-537.
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