Attribution of Changes in Streamflow to Climate Change and Land Cover Change in Yangtze River Source Region, China

Ahmed, Naveed; Wang, Genxu; Lü, Haishen; Booij, Martijn J.; Marhaento, Hero; Prodhan, Foyez Ahmed; Ali, Shahid; Imran, Muhammad Ali

doi:10.3390/w14020259

Cited by 16 publications

(6 citation statements)

References 84 publications

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“…S16) (Ji et al, 2021), and the water and sediment flux in the river basin increased significantly after 2000 (Fig. 6) (Ahmed et al, 2022;Hu et al, 2022;Ji et al, 2021;Li et al, 2020aLi et al, , 2023bSun et al, 2022).…”

Section: Impacts Of Warming and Wetting Climate On Morphological Chan...mentioning

confidence: 99%

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Channel morphological activation of large braided rivers in response to climate-driven water and sediment flux change in the Qinghai-Tibet Plateau

Li,

He,

Zhou

2023

Preprint

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With the rising air temperature and precipitation, water and sediment flux in the Source Region of the Yangtze River have increased significantly since 2000. Nonetheless, the response of braided river morphology to climate-driven water and sediment flux change is still unknown. Water bodies of nine large braided rivers from 1990 to 2020 were extracted based on Google Earth Engine platform, and impacts of climate change on activation indices of braided river morphology were quantified. The main results are presented that a new method of braided water body extraction by combining Lowpath algorithm and Local Otsu algorithm is firstly proposed, which reduces 59% of the root mean squared error of braiding intensity in comparison with the Global Otsu method. The braiding intensity has a parabolic variation trend with the water area ratio, and the average sandbar area ratio has a negative power law trend with the water area ratio. Intra-annual channel migration intensity has an obvious temporal scale effect, which increases rapidly when the time span is less than 5 years. The warming and wetting trend led to vegetation cover increasing significantly. With the increase of runoff, water area of each braided reach has increased in both flood and non-flood season. Intra-annual channel migration intensity shows three different trends of increasing, weakening, and unchanged over time. The response of migration intensity to climate warming can be classified into three patterns in the SRYR as follows: sediment increase constrained pattern, sediment increase dominated pattern, and runoff increase dominated pattern.

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Section: Impacts Of Warming and Wetting Climate On Morphological Chan...mentioning

confidence: 99%

“…Runoff in the SRYR is more responsive to climate change than land cover change (Ahmed et al, 2022;Wang et al, 2017b). Thus, the rising of air temperature and precipitation makes the runoff of the SRYR increase significantly after 2000.…”

Section: Impacts Of Warming and Wetting Climate On Morphological Chan...mentioning

confidence: 99%

Channel morphological activation of large braided rivers in response to climate-driven water and sediment flux change in the Qinghai-Tibet Plateau

Li,

He,

Zhou

2023

Preprint

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“…The SWAT model is inherently able to deal precipitation to runoff processes, meaning that it is applicable in the SRYR to evaluate the hydrological components. The SWAT model proved to be an effective tool for examining hydrological processes in response to varying climate and land-use changes [4,15,34]. The model divides a basin into a number of subbasins based on hydrological response units (HRUs).…”

Section: Hydrological Modelingmentioning

confidence: 99%

“…It is globally agreed that the main drivers of climate change (CC) and land-use change (LUC) affect basin hydrology, which has led to the recognition of the need for effective water management and conservation of fluvial ecosystems at basin scale [1][2][3]. CC, with raised temperature and altered precipitation intensity and patterns, causes variations in hydrological regimes such as low flows, peak flows and time of flow routing [3][4][5][6][7][8]. Land-use changes also affect hydrological processes such as interception, infiltration and evapotranspiration [9][10][11][12], causing variations in surface and subsurface flows.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Climate and Land-Use Changes on Hydrological Processes of the Source Region of Yellow River, China

Iqbal

Wen²,

Masood³

et al. 2022

Sustainability

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Climate variability and land-use change are key factors altering the hydrology of a river basin, which are strongly linked to the availability of water resources and the sustainability of the local ecosystem. This study investigated the combined and individual impacts of land-use changes (LUCs) and climate change (CC) on the hydrological processes in subbasins of the Source Region of the Yellow River (SRYR) through statistical methods and hydrological modeling based on two land-use maps for the period 1990 and 2010, and two climate periods, i.e., 1976–1995 and 1996–2014. The results revealed that the climate is anticipated to be warmer and wetter. Land-use changes were dominated by decreases in sparse grassland. However, the transformation of land-use changes varied spatially within sub-basins. The combined impacts of climate and land-use changes are more noticeable in the Maqu subbasin, where the decrease in runoff reached 18% (32.2 mm) and increase in evapotranspiration (ET) reached 10.4% (34.1 mm), followed by the Tangnaihai and Jimai subbasins. The changes in runoff and ET caused by LUC seemed to be adequate by comparison, and presented a 15.1–19.8% decline in runoff and 21.3–28% increase in ET relative to the totals. Overall, climate change has more influence on hydrological processes in all subbasins of the SRYR than LUC. It is, therefore, considered that the response to changes in hydrological processes in a subbasin can be attributed to changes in individual climate parameters and land-use classes.

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“…Subsequently, Sen [31,[33][34][35] introduced the innovative trend analysis (ITA) method, which is recognized for its simplicity and effectiveness in trend detection. The ITA is characterized by its simplicity in application, representing a novel approach to trend analysis when contrasted with the traditional MK trend analysis [36,37]. The ITA method has garnered significant attention from researchers, who have applied it to time series data of diverse hydro-meteorological variables over the past decade [12,[37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Trends of High and Low Values of Annual and Seasonal Precipitation in Turkey

Nacar

2023

Sustainability

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The exploration of precipitation data trends using innovative analysis methods is anticipated to offer significant contributions to sustainability across various domains, including water resources management, agricultural planning, climate change understanding, environmental protection, risk assessment, and preparedness. This study employs an improved visualization of the innovative trend analysis (IV-ITA) method for detecting annual and seasonal trends in precipitation variables across 194 stations in Turkey over the period 1969–2020. The outcomes derived from the IV-ITA method were further juxtaposed with the results obtained from the classical Mann–Kendall (MK) test. Using the MK test, statistically significant increasing trends were detected in the annual pattern along the northern coasts of Turkey. Based on the results obtained from the IV-ITA, substantial decreasing trends were identified in the basins within the Southeastern Anatolia Region of Turkey. Conversely, an increasing trend was observed in the basins situated in the northwest. It was also established that an increasing trend was observed throughout Turkey, except for some stations in the low-data group. The most significant increasing trend was noted in the basins along the southern coastline, characterized by the prevalence of the Mediterranean climate. In the high-data group, an increase of up to 50% was noted along the southwest coast. Upon comparing the outcomes derived from the IV-ITA method with those obtained using the MK test, it becomes apparent that the IV-ITA yields significantly more detailed results than the MK test. Additionally, applying the IV-ITA method in climate-sensitive regions and basins is envisioned to enhance the accuracy of assessments, foster a sustainable environment, and improve the effective management of water resources.

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Attribution of Changes in Streamflow to Climate Change and Land Cover Change in Yangtze River Source Region, China

Cited by 16 publications

References 84 publications

Channel morphological activation of large braided rivers in response to climate-driven water and sediment flux change in the Qinghai-Tibet Plateau

Channel morphological activation of large braided rivers in response to climate-driven water and sediment flux change in the Qinghai-Tibet Plateau

Impacts of Climate and Land-Use Changes on Hydrological Processes of the Source Region of Yellow River, China

Trends of High and Low Values of Annual and Seasonal Precipitation in Turkey

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