Temporal trend of precipitation and runoff in major Chinese Rivers since 1951

Xu, Kehui; Milliman, John D.; Xu, Hengyong

doi:10.1016/j.gloplacha.2010.07.002

Cited by 186 publications

(89 citation statements)

References 44 publications

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“…The number of reservoir and check-dam increased rapidly over the past few decades. A recent study by Xu et al (2010) shows that the total storage capacity of all registered reservoirs was to be 72 km 3 , which is much higher than the basin's 2000-2010 mean annual runoff (i.e., 23.6 km 3 ). In addition, in our study area, especially in the northern part of the region such as Kuye River catchment (see Fig.…”

Section: Other Factors' Effects On Runoffmentioning

confidence: 91%

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Liang

et al. 2016

Science of The Total Environment

248

103

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Section: Other Factors' Effects On Runoffmentioning

confidence: 91%

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Liang

et al. 2016

Science of The Total Environment

248

103

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“…Recent findings on precipitation trends, climate extremes, and change points (Fischer et al, , 2012 suggest that the hydrology in the Xijiang River basin has also changed. Xu et al (2010) indicated that annual discharge of the Zhujiang River correlates well with basin-averaged precipitation. However, Gemmer et al (2011) have observed increasing tendencies to dryer conditions and stronger precipitation intensities for the entire Zhujiang River basin from 1961 to 2007.…”

Section: T Fischer Et Al: Hydrological Long-term Dry and Wet Periodsmentioning

confidence: 95%

Hydrological long-term dry and wet periods in the Xijiang River basin, South China

Fischer

Gemmer

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. In this study, hydrological long-term dry and wet periods are analyzed for the Xijiang River basin in South China. Daily precipitation data of 118 stations and data on daily discharge at Gaoyao hydrological station at the mouth of the Xijiang River for the period 1961-2007 are used. At a 24-month timescale, the standardized precipitation index (SPI-24) for the six sub-basins of the Xijiang River and the standardized discharge index (SDI-24) for Gaoyao station are applied. The monthly values of the SPI-24 averaged for the Xijiang River basin correlate highly with the monthly values of the SDI-24. Distinct long-term dry and wet sequences can be detected.The principal component analysis is applied and shows spatial disparities in dry and wet periods for the six subbasins. The correlation between the SPI-24 of the six subbasins and the first principal component score shows that 67 % of the variability within the sub-basins can be explained by dry and wet periods in the east of the Xijiang River basin. The spatial dipole conditions (second and third principal component) explain spatiotemporal disparities in the variability of dry and wet periods. All sub-basins contribute to hydrological dry periods, while mainly the northeastern sub-basins cause wet periods in the Xijiang River. We can also conclude that long-term dry events are larger in spatial extent and cover all sub-basins while long-term wet events are regional phenomena.A spectral analysis is applied for the SPI-24 and the SDI-24. The results show significant peaks in periodicities of 11-14.7 yr, 2.8 yr, 3.4-3.7 yr, and 6.3-7.3 yr. The same periodic cycles can be found in the SPI-24 of the six sub-basins but with some variability in the mean magnitude. A wavelet analysis shows that significant periodicities have been stable over time since the 1980s. Extrapolations of the reconstructed SPI-24 and SDI-24 represent the continuation of observed significant periodicities at given magnitudes until 2030. The projected hydrological long-term dry and wet periods can be used for planning purposes in water resources management. The applied methodologies prove to be able to identify spatial disparities, and to detect significant periodicities in hydrological long-term dry and wet periods in the Xijiang River basin.

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“…To maximize utilization of this resource, compensate for the uneven spatial distribution of water resources, and relieve the extreme scarcity of water in Northern China [2], the South-to-North Water Transfer Project was developed. Furthermore, to reduce flooding in the wet season [3], approximately 50,000 dams have been built since the People's Republic of China was founded [4].…”

Section: Introductionmentioning

confidence: 99%

Impact of the Three Gorges Dam on the Hydrology and Ecology of the Yangtze River

Zhang

Dong

Gupta

et al. 2016

Water

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Construction and operation of the Three Gorges Dam (TGD) has significantly altered the downstream hydrological regime along the Yangtze River, which has in turn affected the environment, biodiversity and morphological configuration, and human development. The ecological and environmental systems of the middle and lower Yangtze River have been affected adversely, with the ecosystems of Poyang Lake and its deltas being among the most damaged. Besides posing a potential threat to the survival of migrant birds and aquatic species, operation of the TGD has also affected the human population, particularly with respect to water and food security. Though the above mentioned effects have been studied in previous papers, a comprehensive discussion has never been conducted. This paper provides the first ever summary of the impacts of the TGD on the downstream reaches of the Yangtze River. The costs and benefits identified provide a constructive reference that can be used in decision-making for sustainable development of water resources in other nations, especially those in the developing world.

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Temporal trend of precipitation and runoff in major Chinese Rivers since 1951

Cited by 186 publications

References 44 publications

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Vegetation changes in recent large-scale ecological restoration projects and subsequent impact on water resources in China's Loess Plateau

Hydrological long-term dry and wet periods in the Xijiang River basin, South China

Impact of the Three Gorges Dam on the Hydrology and Ecology of the Yangtze River

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