Influence analysis of artificial water transfer on the regional ecological environment of Qingtu Lake in the lower reaches of the Shiyang River

Wanli, 石万里 Shi; Shujuan, 刘淑娟 Liu; Shizeng, 刘世增 Liu; Hongbo, 袁宏波 Yuan; Jianping, 马剑平 Ma; Hujun, 刘虎俊 Liu; Fubo, 安富博 An

doi:10.5846/stxb201701180154

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By 2016, the area of the catchment had reached more In the 1950s, the construction of the Hongyashan Reservoir in the middle reaches of the Shiyang River caused the terminal lake of the Shiyang River to dry up quickly, and desertification of the Minqin Oasis in the lower reaches intensified [20]. Since the 1960s, there have been a series of ecological problems in the lower reaches of the Shiyang River, such as the decline of groundwater level, vegetation degradation, soil salinization, and other issues [24,28]. Since 2010, the local government has carried out targeted treatment on the ecological environment problems of the lower Shiyang River by means of artificial ecological water conveyance and so on, and the area of the desert has been controlled effectively.…”

Section: Figurementioning

confidence: 99%

“…Ecological water conveyance is a common ecological measure in arid basins at present, but it was implemented for a short time in the Shiyang River Basin. Today, research on this policy mainly focuses on the effects of ecological water transportation on the regional vegetation coverage [21], hydrological changes on the vegetation pattern [22,23], the dynamic changes of groundwater level around lakes and the effects of ecological control [24], and the microclimate of lakes [25,26]. These research results provide a scientific and detailed theoretical basis for guiding human rational use of lake water resources and ecological environmental management.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effects of Ecological Water Conveyance on the Hydrochemistry of a Terminal Lake in an Inland River: A Case Study of Qingtu Lake in the Shiyang River Basin

Zhu

Yang

et al. 2019

Water

View full text Add to dashboard Cite

Along with the growth of the population and economic and social development, water consumption in the upper-middle reaches of inland rivers is increasing, which has resulted in long-term cutout in the lower reaches of the river, shrinkage and drying up of the wetlands around the terminal lakes, and has caused a series of ecological problems at the same time. In order to protect the fragile ecological environment, comprehensive harnessing projects have been carried out in many inland river basins in China, in which adopting ecological water conveyance to rehabilitate degraded terminal lakes and wetlands is an important means. From June 2014 to October 2017, the water in the upper-middle reaches of the Shiyang River Basin and the lake water of the terminal lake after ecological water conveyance was sampled. The effects of ecological water conveyance on the characteristics of surface water and groundwater were analyzed using, for example, the Piper triangle diagram, Gibbs boomerang envelope model, and mixing diagram. After ecological water conveyance, the ion concentration of water in Qingtu Lake was higher overall, and ion concentration of water in the unstable catchment was higher than that of the stable catchment. The time variation was characterized as high in the summer half year and low in the winter half year. The water of Qingtu Lake is of high and large salinity, and its hydrochemical type is Na-SO 4 (Cl), which is obviously different from the water in the middle-upper reaches of the Shiyang River Basin. The effects of silicate weathering and evaporation crystallization are the main factors leading to the high ion concentration in the water of Qingtu Lake. Ecological water conveyance and the strong evaporation of arid areas have intensified the salinization of water and soils in Qingtu Lake. Meanwhile, implementing the ecological water conveyance policy in the terminal lake has also led to shortage of water resources for agricultural irrigation in the middle reaches of the Shiyang River Basin. The serial negative ecological effects of the ecological water conveyance should be emphasized.

show abstract

Section: Figurementioning

confidence: 99%

mentioning

confidence: 99%