Impacts of Land Use Change on River Systems for a River Network Plain

Wu, Lei; Xu, Youpeng; Yuan, Jia; Xu, Yu; Wang, Qiang; Xu, Xiangzhou; Wen, Haiyan

doi:10.3390/w10050609

Cited by 22 publications

(16 citation statements)

References 24 publications

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“…These results highlight the high spatiotemporal variability that can characterize freshwater aquatic systems. This kind of variability has been seen in other Chinese cities [88,89] and in a rapidly urbanizing region in southwest Australia [90] over similar time periods. We found statistically significant increases in the total surface area of lakes and canals over time, while the area of reservoirs and the perennial river fluctuated but showed a non-significant decreasing trend from 1990 to 2020.…”

Section: Discussionsupporting

confidence: 67%

Anthropogenic and Climatic Factors Differentially Affect Waterbody Area and Connectivity in an Urbanizing Landscape: A Case Study in Zhengzhou, China

Liu

Minor

Garfinkel

et al. 2021

Land

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Urbanization alters the distribution and characteristics of waterbodies, potentially affecting both the habitat availability and connectivity for aquatic wildlife. We used Landsat satellite imagery to observe temporal and spatial changes in open-water habitats in Zhengzhou, a rapidly growing city in central China. We classified open water into six categories: perennial rivers, seasonal rivers and streams, canals, lakes, ponds, and reservoirs. From 1990 to 2020, in 5-year intervals, we identified, counted, and measured the area of each kind of waterbody, and we used a model selection approach with linear regressions to ask which climate and anthropogenic drivers were associated with these changes. We also used Conefor software to examine how these changes affected the landscape connectivity for waterfowl. Over the study period, lakes and canals were the only waterbody types to show statistically significant changes in surface area, increasing by 712% and 236%, respectively. Changes in lakes and canals were positively correlated with the length of water pipeline in the city. The connectivity of waterbodies fluctuated over the same period, mirroring fluctuations in the perennial Yellow River. Ponds contributed very little to landscape connectivity, and the importance of reservoirs decreased over time. Conversely, canals played an increasingly important role in landscape connectivity over time. Counterintuitively, the connectivity of waterbodies increased in the built-up part of the city. Our results show that urbanization can have unexpected effects—both positive and negative—on the connectivity and area of open-water habitats. These effects are likely to be important for waterfowl and other aquatic organisms.

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Section: Discussionsupporting

confidence: 67%

Anthropogenic and Climatic Factors Differentially Affect Waterbody Area and Connectivity in an Urbanizing Landscape: A Case Study in Zhengzhou, China

Liu

Minor

Garfinkel

et al. 2021

Land

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“…Furthermore, river channel morphology is influenced by dependent land escape variables (sediment, discharge and vegetation) whereas the independent variables were climate, human and geology [6]. As a result, land use/cover change influence the hydrological cycle and availability of water resources by changing canopy interception, surface roughness, soil properties, and evapotranspiration [7][8][9]. Thus, it significantly contributes to the earth's atmosphere interactions, forest fragmentation, and biodiversity loss.…”

Section: Introductionmentioning

confidence: 99%

Effect of Land Use/Cover and Dam on River Morphological Change in Este District, Gomit River, Amhara, Ethiopia

Wubalem¹,

Yihunie²

2021

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Recently, the construction of dams has affected the morphological process of the downstream river reach by storing water and sediment, changing the water discharge regime of the river and releasing relatively clear water to the downstream. Due to this, GIS and RS software have been used to identify land use and land cover changes, as well as the dam impact of the downstream of the river. The objective of this research is to determine the effect of land use, land cover change, and dams on river morphological change in the Gomit River. The methodology of the study was used four significant parameters (land sat imaginary, slope, soil, and river cross-section) to determine the river morphological change of the study area. Land use/cover changes have been recognized as percent (%), which are forest and grass land, have been decreased by 3 and 27% respectively. Whereas the caltivation land and settlement area were become increasing 26 and 3.4% respectively, While the degrading and aggradation values have been obtained 0.612m, 0.566 and 0.345m from the respective years of 2002, 2016 and 2020 respectively. The sinuosity index values of the years were obtained (2002, 2016 and 2020) is 1.374, 1.30 and 1.294 respectively. As the result the narrowed and widened values are 79.99 and 20.01% respectively.

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“…However, human activity changes are putting many PRNRs into situations of frequent flooding and deteriorating water quality and ecosystem function (Pinto & Maheshwari, 2011, Zhang, Guo, & Wang, 2015, Zhao, Lin, Yang, Liu, & Qian, 2015, Song, Xu, Zhang, Li, & Wang, 2016, Yang et al, 2016, Deng, 2019, Kreiling, Thoms, Bartsch, Richardson, & Christensen, 2019). Considering that these regions are highly variable in land use and flow dynamics, it is important to identify the quantity and structural changes of river networks, as well as to understand the paradigm of the spatiotemporal change process (Wu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal change in the river network in rapidly urbanized plain regions of the Yangtze River Delta in China

Yang

et al. 2022

River Research & Apps

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Rapid urbanization has brought numerous aquatic problems to plain river network regions. We selected three categories (five indicators) of characteristics to describe the physical characteristics of river network systems, including quantitative, structural, and complex characteristics. Using the grid method and hierarchical clustering analysis (HCA), the spatiotemporal change pattern of one plain river network of the Yangtze River Delta was addressed from the 1960s to 2014 based on topographic maps. The results showed that the river density (DR), water surface ratio (WP), and box dimension (D0) in over 82% of the area decreased. The spatial pattern of the water system is divided into four categories by HCA: urban areas, river network areas, mainstream areas, and lake areas. The categories of river network areas and lake areas decreased, while the categories of urban areas and mainstream areas increased from the 1960s to 2014 because of urbanization. There are approximately 12.8% grid cells that change from river network areas to mainstream areas, which is the most important change due to the reduction of tributaries and increase of main streams. These results indicate that river network distribution patterns have the tendency to simplify and remain mainstream. Our study suggests that water systems and river networks should be protected, which would provide support for water resource management in highly urbanized plain regions.

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Impacts of Land Use Change on River Systems for a River Network Plain

Cited by 22 publications

References 24 publications

Anthropogenic and Climatic Factors Differentially Affect Waterbody Area and Connectivity in an Urbanizing Landscape: A Case Study in Zhengzhou, China

Anthropogenic and Climatic Factors Differentially Affect Waterbody Area and Connectivity in an Urbanizing Landscape: A Case Study in Zhengzhou, China

Effect of Land Use/Cover and Dam on River Morphological Change in Este District, Gomit River, Amhara, Ethiopia

Spatiotemporal change in the river network in rapidly urbanized plain regions of the Yangtze River Delta in China

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