Driving forces of nature and human activities on water and sediment changes in the middle reaches of the Yellow River in the past 100 years

Xu, Jian; Jiang, Xiaohui; Sun, Haotian; Xu, Huanyu; Zhong, Xue Mei; Liu, Bo; Li, Leilei

doi:10.1007/s11368-021-02952-9

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…Vegetation changes caused by climatic factors and human activities will affect regional and global vegetation improvement or degradation ( Gu et al., 2022 ), which in turn affects ground erosion resistance and surface runoff. And vegetation will be further affected when human activities intensify ( Xu et al., 2021 ).…”

Section: Resultsmentioning

confidence: 99%

“…Tree rings are widely used in the study of past climatic, ecological, and environmental changes due to their accurate dating, strong continuity, high resolution, and sensitivity to the environment ( Zhang, 2015 ). Since the radial growth of trees and vegetation growth in the same area are affected by common climatic and environmental factors ( Xu et al., 2021 ), the use of tree rings to study the change of vegetation cover can make up for the short time scale of NDVI remote sensing data.…”

Section: Introductionmentioning

confidence: 99%

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Impacts of climate change and human activities on vegetation coverage variation in mountainous and hilly areas in Central South of Shandong Province based on tree-ring

et al. 2023

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IntroductionIt is of great significance to understand the characteristics and influencing factors of vegetation coverage variation in the warm temperate zone. As a typical region of the warm temperate zone in eastern China, the mountainous and hilly region in central-south Shandong Province has fragile ecological environment and soil erosion problem. Studying on vegetation dynamics and its influencing factors in this region will help to better understand the relationship between climate change and vegetation cover change in the warm temperate zone of eastern China, and the influence of human activities on vegetation cover dynamics.MethodsBased on dendrochronology, a standard tree-ring width chronology was established in the mountainous and hilly region of central-south Shandong Province, and the vegetation coverage from 1905 to 2020 was reconstructed to reveal the dynamic change characteristics of vegetation cover in this region. Secondly, the influence of climate factors and human activities on the dynamic change of vegetation cover was discussed through correlation analysis and residual analysis.Results and discussionIn the reconstructed sequence, 23 years had high vegetation coverage and 15 years had low vegetation coverage. After low-pass filtering, the vegetation coverage of 1911–1913, 1945–1951, 1958–1962, 1994–1996, and 2007–2011 was relatively high, while the vegetation coverage of 1925–1927, 1936–1942, 2001–2003, and 2019–2020 was relatively low. Although precipitation determined the variation of vegetation coverage in this study area, the impacts of human activities on the change of vegetation coverage in the past decades cannot be ignored. With the development of social economy and the acceleration of urbanization, the vegetation coverage declined. Since the beginning of the 21st century, ecological projects such as Grain-for-Green have increased the vegetation coverage.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impacts of climate change and human activities on vegetation coverage variation in mountainous and hilly areas in Central South of Shandong Province based on tree-ring

et al. 2023

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“…Factors affecting runoff and sediment discharge include climate change (variations in meteorological elements), geographical conditions, and human activities (soil and water conservation measures, land use changes, and hydraulic engineering construction). In the 100-year time scale, climate change and human activities are the two main influencing aspects [7]. The combined effects of the two factors cause changes in the spatial and temporal pattern of the terrestrial hydrological cycle [8,9], and the degree of influence varies with different geographical locations and time periods [10,11].…”

Section: Introductionmentioning

confidence: 99%

Contribution of Climate Change and Human Activities to Runoff and Sediment Discharge Changes Based on Budyko Theory and Water–Sediment Relationships during 1960–2019 in the Taohe River Basin, China

et al. 2023

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Variations in runoff and sediment discharge are important characteristic variables for revealing the coupled effects of climate change (including both the natural variability of climate and anthropogenic climate change) and human activities (including soil and water conservation measures, land use changes, and hydraulic engineering construction). Based on the meteorological data from 19 meteorological stations and the hydrological data from the watershed control station of Hongqi Station, the temporal and spatial evolution of runoff and sediment discharge and the water–sand relationship were analyzed, and the response mechanisms of runoff and sediment discharge changes were clarified using Mikhail Budyko’s theory and other qualitative and quantitative methods. The results determined that: (1) The runoff and sediment discharge showed significant downward trends, with linear change rates of −0.28 × 108 m3/a and −46.10 × 104 t/a, respectively. The change points of the runoff and sediment discharge occurred in 1987 and 1996, respectively. (2) The spatial distribution of water and sediment was different, and the upper and middle reaches produced water, while the downstream produced sediment. (3) Comparing potential evapotranspiration and rainfall based on Budyko theory and the regression relationship, runoff is more closely related to rainfall, and runoff changes are more affected by it. The change in sediment discharge is most closely related to sediment concentration, followed by rainfall and potential evaporation. (4) The contribution rates of runoff and sediment discharge changes influenced by climate change were 24% and 3%, respectively, and the contribution rates by human activities were 76% and 97%, respectively. Human activities, including soil and water conservation measures, land use changes, and hydraulic engineering construction were the main influencing factors, and the impacts of human activities increased from 1960 to 2019. The research results are of great significance for erosion control and ecological restoration in the Tao River Basin under the conditions of the changing environment.

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Effects of variations in precipitation extremes on sediment load in the Second Songhua River Basin, Northeast China

et al. 2023

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Driving forces of nature and human activities on water and sediment changes in the middle reaches of the Yellow River in the past 100 years

Cited by 9 publications

References 39 publications

Impacts of climate change and human activities on vegetation coverage variation in mountainous and hilly areas in Central South of Shandong Province based on tree-ring

Impacts of climate change and human activities on vegetation coverage variation in mountainous and hilly areas in Central South of Shandong Province based on tree-ring

Contribution of Climate Change and Human Activities to Runoff and Sediment Discharge Changes Based on Budyko Theory and Water–Sediment Relationships during 1960–2019 in the Taohe River Basin, China

Effects of variations in precipitation extremes on sediment load in the Second Songhua River Basin, Northeast China

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