Studies on the dynamic boundary of the fresh-salt water interaction zone of estuary wetland in the Yellow River Delta

Yu, Miao; Li, Yunzhao; Zhang, Kun; Yu, Junbao; Guo, Xulin; Guan, Bo; Yang, Jing; Zhou, Di; Wang, Xuehong; Li, Xue; Zhang, Xin

doi:10.1016/j.ecoleng.2023.106893

Cited by 7 publications

(2 citation statements)

References 28 publications

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“…According to wetland classification standards, combined with the landscapes of the YRD [39][40][41], the wetland classification system was constructed (Table 1). The process of the extraction and classification of wetland information was mainly divided into the following steps (Figure 1).…”

Section: Wetland Of the Yrd During 2015-2022mentioning

confidence: 99%

The Changes in Dominant Driving Factors in the Evolution Process of Wetland in the Yellow River Delta during 2015–2022

Wei

Guo

et al. 2023

Remote Sensing

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Most of the previous studies exploring the changing patterns of wetland in the Yellow River Delta (YRD) were conducted based on sparse time-series images, which ignored its severe environmental gradient and rapid evolution process of the wetland. The changes in the dominant factors in the evolution of the wetland in the YRD are not clear. This study used the dense time-series Sentinel-2 images to establish a wetland database of the YRD, and then analyzed the spatial distribution characteristics of, and temporal changes in, the wetland during 2015–2022. Finally, the dominant factors of the spatio-temporal evolutions of the wetland were explored and revealed. The results showed the following. (1) During 2015–2022, the wetland in the YRD was dominated by artificial wetland, accounting for 54.02% of the total wetland area in the study area. In 2015–2022, the total wetland area increased by 309.90 km2, including an increase of 222.63 km2 in natural wetlands and 87.27 km2 in artificial wetlands. In the conversion between wetland types, 218.73 km2 of artificial wetlands were converted into natural wetlands, and 75.18 km2 of natural wetlands were converted into artificial wetlands. The patch density of rivers, swamps, and salt pans increased, showing a trend of fragmentation. However, the overall degree of landscape fragmentation in wetlands weakened. The trend of changes in the number of patches and landscape shape index was the same, while the trend of changes in Shannon’s diversity index and Contagion index was completely opposite. (2) Natural factors, such as precipitation (0.51, 2015; 0.65, 2016), DEM (0.57, 2017; 0.47, 2018; 0.49, 2020; 0.46, 2021), vegetation coverage (0.59, 2019), and temperature (0.48, 2022), were the dominant influencing factors of wetland changes in the YRD. The dominant single factor causing the changes in artificial wetlands was vegetation coverage, while socio-economic factors had lower explanatory power, with the average q value of 0.18. (3) During 2015–2022, the interactions between the natural and artificial factors of the wetland changes were mostly nonlinear and showed double-factor enhancement. The interactions between temperature and sunshine hours had the largest explanatory power for natural wetland change, while interactions between precipitation and vegetation coverage, and between temperature and vegetation coverage, had large contribution rates for artificial wetland change. The interactions among natural factors had the greatest impacts on wetland change, followed by interactions between natural factors and socio-economic factors, while interactions among socio-economic factors had more slight impacts on wetland change. The results can provide a scientific basis for regional wetland protection and management.

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Section: Wetland Of the Yrd During 2015-2022mentioning

confidence: 99%

The Changes in Dominant Driving Factors in the Evolution Process of Wetland in the Yellow River Delta during 2015–2022

Wei

Guo

et al. 2023

Remote Sensing

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“…The Yellow River Delta was formed by the depositional effect of sediment carried by the Yellow River, and the massive mud and sand caused expansion of 20~25 km 2 per year [18]. The delta occupies 7870 km 2 , and it mostly covers Dongying City and Binzhou City and parts of the cities of Zibo, Dezhou, and Weifang [19].…”

Section: Introductionmentioning

confidence: 99%

Agricultural Water Quality Assessment and Application in the Yellow River Delta

et al. 2023

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Irrigation is the primary agricultural utilization of water resources worldwide, and it produces 36% of the food. The quality of irrigation water influences crop growth and food safety. The coastal river delta region supplies huge area lands for developing agriculture, and the irrigation in this area is composed of many resources for its special location. This study investigated the agricultural water with different resources and evaluated its quality in the Yellow River Delta. The water samples included irrigation water, underground water, and drainage water. The sampling points were designed in the typical areas of Kenli county and Guangrao county in Dongying city, which is the core area of the Yellow River Delta. Through testing the ions composition and the parameters of electrical conductivity (EC), pH, and so on, six evaluation methods were conducted to assess the water quality. The results suggested that the Yellow River water has good quality for irrigation or unconventional water utilization. The high concentration of Na+ and Cl− was the primary problem of the water resource. The rainfall was also another water resource supplement in this region. Therefore, developing saline water irrigation incorporated with salt-tolerant crop cultivation is a rational measure for improving coastal agriculture in the Yellow River Delta.

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Effects of mangrove wetland restoration on macrobenthos communities in the Pearl River Estuary Delta, China

Yu,

Qian,

Ren

et al. 2024

Environ Earth Sci

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Studies on the dynamic boundary of the fresh-salt water interaction zone of estuary wetland in the Yellow River Delta

Cited by 7 publications

References 28 publications

The Changes in Dominant Driving Factors in the Evolution Process of Wetland in the Yellow River Delta during 2015–2022

The Changes in Dominant Driving Factors in the Evolution Process of Wetland in the Yellow River Delta during 2015–2022

Agricultural Water Quality Assessment and Application in the Yellow River Delta

Effects of mangrove wetland restoration on macrobenthos communities in the Pearl River Estuary Delta, China

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