Changes in terrestrial surface dry and wet conditions on the Loess Plateau (China) during the last half century

Yu-bi, Yao; Wang, Runyuan; Yang, Jincai; Yue, Ping; Lü, Daren; Guoju, Xiao; Wang, Yang; Lin-chun, Liu

doi:10.1007/s40333-013-0137-3

Cited by 21 publications

(29 citation statements)

References 14 publications

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“…Moreover, the inner-annual variation of precipitation and temperature was much greater than the inter-annual variation over the 56 years. Similar results were also reported by Yao et al (2013) and and T. . It was also demonstrated that the extent of the detected variations largely depend on the chosen temporal or spatial scales (Western and Blöschl, 1999;Vicente-Serrano et al, 2010).…”

Section: Spatiotemporal Variation Of Climatesupporting

confidence: 91%

“…It starts from the TaiHang Mountains in the east, reaches the RiYue Mountain in the west, and borders on the QinLing Mountains in the south and Yin Mountain in the north. The region lies in the marginal zone of the East Asian and South Asian summer monsoon and thus is sensitive to the activity and intensity of the monsoon (Yao et al, 2013). The annual precipitation ranges from 150 mm in the northwest to 800 mm in the southeast, 55-78% of which falls from June to September in the form of high-intensity storms.…”

Section: Study Areamentioning

confidence: 99%

“…However, drought hazards occur frequently in this region and have caused huge agricultural and socio-economic losses (Yao et al, 2013). Severe water scarcity is the key obstacle for the healthy and sustainable development of ecological environment of the Loess Plateau (Shi and Shao, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…They found a significant increasing trend of the drought rate in the spring and autumn and a slight increasing trend in the summer and winter. Based on climatic data from 1961 to 2010 collected from 48 meteorological stations distributed across the Loess Plateau, Yao et al (2013) identified the decadal variation and the spatiotemporal distribution of spring droughts using a drought level index based on relative humidity. They concluded that the area affected by drought increased at a speed of 4% per decade and currently covered 94% of the Loess Plateau.…”

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal analysis of multiscalar drought characteristics across the Loess Plateau of China

Liu

Wang

Shao

et al. 2016

Journal of Hydrology

171

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s u m m a r yDrought is the most widespread and destructive hazard in arid and semiarid regions, with behaviors that become more complicated under climate change. To provide an overall view of drought conditions across the Loess Plateau of China, two multiscalar drought indices, the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI), were used to identify the regional spatiotemporal characteristics of drought conditions from 1957 to 2012. Climatic data from 54 meteorological stations across the region were used to calculate the SPI and SPEI time series at 1-, 3-, 6-, 12-and 24-month time scales. Subregions with independent drought characteristics and the corresponding representative meteorological stations were identified by principal component analysis to facilitate regional drought monitoring. A temporal trend of drought severity over a 12-month time scale, as detected by the Mann-Kendall test, was mapped for the entire region. The intensity of the increasing trend of drought severity based on the SPEI was weaker than that based on the SPI. The area with a significant increasing trend of drought severity based on the SPEI was only found in the southwest of the region and was much smaller than that based on the SPI. The temporal behavior of drought frequency from January to December differed over different time scales and levels of drought severity. The regional distributions of the drought frequency were mapped for different months. Generally, the drought frequency spatially decreased from southeast to northwest and was higher in the middle of the winter, late spring and early summer. While the drought-hit area also changed with time, it was generally within the central and northwest areas of the region. Drought behaviors identified by the SPI and SPEI also changed with different time scales. Clear differences were also found among the drought characteristics identified by SPI, SPEI and the self-calibrated Palmer Drought Severity Index. The SPEI is considered as a robust index for regional drought monitoring and analysis under global climate change scenarios because of its multiscalar nature, simple form, low data requirement, and ability to identify the effects of temperature on drought conditions.

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Section: Spatiotemporal Variation Of Climatesupporting

confidence: 91%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatiotemporal analysis of multiscalar drought characteristics across the Loess Plateau of China

Liu

Wang

Shao

et al. 2016

Journal of Hydrology

171

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“…In China's dryland region, various changes have been observed in temperature, precipitation and other climatic factors during the past decades (Fan et al, 2012;Ge et al, 2013;Meng et al, 2013;Wang et al, 2006;Zhao, 2013). Many studies analyzed the effect of recent climate changes on droughts (Yao et al, 2013), stream runoff Zhang et al, 2013), plant phonological development (Dai et al, 2012(Dai et al, , 2014Ge et al, 2013), and plant productivity (He et al, 2014;Xiao et al, 2013;Yao et al, 2012) in parts of the region. Some studies analyzed changes in rainfall erosivity, indicating that the rainfall erosivity tended to increase in north Xinjiang and north Tibet Plateau, but to decrease in the Loess Plateau (Liu et al, 2013;Xin et al, 2011;Zhang et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variation and trends in rainfall erosivity in China's dryland region during 1961–2012

Yang

2015

CATENA

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This study evaluated rainfall erosivity and its changes in China's dryland region during 1961-2012, using a daily rainfall erosivity model, ArcGIS based spatial interpolation tools, and the Mann-Kendall and Sen's methods. It was found that mean rainfall erosivity was 2-4098 MJ mm ha −1 h −1 a −1 in the region, with the regional average of 794 MJ mm ha −1 h −1 a −1 , showing a significant increase trend accordingly with an increase in rainfall from northwest to southeast. Rainfall erosivity varied annually with the CV of 32.4-491.3%, and varied seasonally with about three-quarter distributed in summer. During 1961-2012, a statistically significant increase/decrease trend in rainfall erosivity was detected only for 24/10 stations or about 4.6/0.4% of the region, and a nonsignificant increase/decrease trend was observed for 32/45 stations or 16.5/10.0% of the region at the 50 to 90% confidence level. No statistically confidential trend was found for other 126 stations or 68.5% of the region. At regional level, mean annual erosivity of the arid zone indicated an upward trend, while the sub-humid zone a downward, but the semi-arid zone generally had no evidential trend. Comparing the 26 year's averages during 1987-2012 and 1961-1986, mean erosivity of the arid zone increased by 17.4%, the sub-humid zone decreased by 6.1%, and the semi-arid zone reduced slightly by 0.45%. The results suggest that change in the rainfall characteristics during the past half century had no significant influence on water erosion in the majority of the region, but it could probably induce an increase of water erosion risk in parts of the drier west and a slight decrease in parts of the wetter east including the Loess Plateau.

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Contribution of climate change and urbanization to the variation of extreme precipitation in the urban agglomerations over the Loess Plateau

Wei

Wang

Zheng

et al. 2022

Hydrological Processes

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With global warming and rapid urbanization, urban agglomerations (UAs) over the Loess Plateau (LP) are suffering from various urban disasters. Urbanization has aggravated the decreasing trends of extreme precipitation in Taiyuan and Xi'an UAs and enhanced the increasing trends of extreme precipitation in Luoyang, Hohhot and Xining UAs during 1979–2018. Meanwhile, the number of light rain days decreases in almost all the cities, indicating the sensitivity of light rain days to urbanization. Climate change is a primary contributor to the change of urban precipitation during 1979–2000 in this region. But, the contribution of urbanization has been increasing gradually since 2000, and it further amplifies the influence of climate change. In terms of physical mechanisms, rapidly increasing surface temperatures and aerosol particles are closely related to urban precipitation. Our findings provide a systematic understanding of the urbanization effects on extreme precipitation over the LP, playing an important role in the mitigation of future urban disasters.

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Changes in terrestrial surface dry and wet conditions on the Loess Plateau (China) during the last half century

Cited by 21 publications

References 14 publications

Spatiotemporal analysis of multiscalar drought characteristics across the Loess Plateau of China

Spatiotemporal analysis of multiscalar drought characteristics across the Loess Plateau of China

Spatiotemporal variation and trends in rainfall erosivity in China's dryland region during 1961–2012

Contribution of climate change and urbanization to the variation of extreme precipitation in the urban agglomerations over the Loess Plateau

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