Spatial and temporal evolution of climatic factors and its impacts on potential evapotranspiration in Loess Plateau of Northern Shaanxi, China

Li, C; Wu, Pute; Xl, Li; Zhou, TW; Sun, SK; Wang, YB; Luan, Xiaobo; Yu, Xiang

doi:10.1016/j.scitotenv.2017.02.122

Cited by 86 publications

(71 citation statements)

References 29 publications

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“…The outcomes exhibited that the RH was the most sensitive factor of ET ref in HRB, followed by SR, TA, and WS, respectively, which coincided with the conclusions proposed by Gong et al [86] and Li et al [31] in the Yangtze River Basin and also the Loess Plateau of Northern Shaanxi, China. However, in summer and during the growing season, the ET ref showed the most sensitivity to SR, with TA, RH, and WS following, respectively.…”

Section: Impact Of Climate Factors To Et Ref Trendssupporting

confidence: 89%

“…The MK test is employed in this research to analyze temporal change trends of ET ref and related meteorological variables [53][54][55]. It has an advantage which lies in its ability to test the linearity of a trend [31].…”

Section: Trend Analysismentioning

confidence: 99%

“…Global warming has become an accepted fact in the present era [31]. The warming rate in the global mean surface temperature from 1951 to 2012 was 0.012 • C·a −1 .…”

Section: Temporal Change Trends Of Et Ref and Climate Factors In Hrbmentioning

confidence: 99%

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Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Chu

Shen

et al. 2018

Water

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showed in spring. These phenomena could be reasonably explained by a significantly increasing mean temperature (TA), a significantly decreasing wind speed (WS), solar radiation (SR), and a slightly decreasing relative humidity (RH). The most sensitive factor to ET ref was RH in most sub-regions and most time scales, except in the growing season and summer. Based on the developed differential equation method, the dominant factor of the decreasing ET ref was WS in the annual time scale, spring, autumn, and winter in most sub-regions, except the lower HRB, which then shifted to SR in the growing season and summer. However, in the lower HRB, the significantly decreasing RH was the most dominant factor, especially in the annual time scale, growing season, and spring, which might be responsible for the slightly increasing ET ref there.

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Section: Impact Of Climate Factors To Et Ref Trendssupporting

confidence: 89%

Section: Trend Analysismentioning

confidence: 99%

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Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Chu

Shen

et al. 2018

Water

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“…As an outcome of these technologies, winter wheat yield has increased significantly on the Loess Plateau of China during the last 20 years [8].As part of the course of global climate change, rainfall and temperature have significantly changed on the Loess Plateau of China over the last 20 years. Related research shows that temperature on the Loess Plateau has increased 0.035-0.050 • C in the past year; its increasing rate is higher than the mean value for China overall [6,9]. Rainfall on the Loess Plateau, though, has followed a downward trend, though its decreasing rate is also higher than the mean value for China overall [8,10].…”

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confidence: 98%

Response of Soil Water and Wheat Yield to Rainfall and Temperature Change on the Loess Plateau, China

et al. 2018

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Understanding the influences of rainfall and temperature on soil water and the grain production of winter wheat (Triticum aestivum L.), is of great importance to ensure the sustainability of food production on the Loess Plateau of China. Based on calibration and evaluation, the Environmental Policy Integrated Climate (EPIC) model was employed to determine the response of soil water and winter wheat to rainfall and temperature changing over the last 30 years in different regions. Results showed that (1) the EPIC model simulated soil water content well in 0-2 m soil, with a relative root mean square error (RRMSE) value of 6.0~14.0%, and the mean value of R 2 was 0.824, which was similar to the value of ME (0.815); (2) rainfall decreased 13.6-24.9% more from 2001 to 2010 than it did during 1961-2000, while its minimum and maximum temperature increased 1.00-1.55 • C and 0.30-0.84 • C respectively, in comparison with 1961-2000; (3) both the increase of maximum temperature and the decrease of rainfall were harmful to the production of winter wheat. Contrarily, the increase of minimum temperature was beneficial to the production of winter wheat on the Loess Plateau of China. Furthermore, due to rainfall decreasing, the winter wheat yield of Luochuan, Changwu, Yuncheng, and Yan'an decreased by 8.5%, 7.6%, 11.7%, and 12.3%, respectively. Because of the rising of the maximum temperature, winter wheat yield decreased 6.4%, 6.8%, 7.2%, and −3.0%, respectively. On the other hand, the increase of the minimum temperature raised the winter wheat yield of 8.8%, 10.2%, 1.5%, and 12.0%, respectively. Climate change, either precipitation reduction or temperature increase, decreased soil water in the dry land winter wheat field. Therefore, more water-saving technologies are needed to adapt to climate change, to store and use water sources more effectively in semi-arid regions. Though precipitation reduction and maximum temperature increase produced negative impacts on winter wheat yield, the uptrend in minimum temperature is better for increasing the winter wheat yield, which can be used by farmers and governments to adapt to climate change, by adjusting planting time properly. recharge generally does not occur beyond 2-3 m; however, in rainy years, the infiltrating depth of rainwater may exceed 2 or even 3 m. The water accumulates and is stored in the deep soil, which works as a water reservoir, providing enough water for crops during the dry season and insurance for sustainable food production on the Loess Plateau.According to weather conditions and soil characteristics, agricultural scientists have suggested saving rainfall water in the deep soil and using deep soil water effectively for winter wheat production on the Loess Plateau [4,5]. With the development of water saving technologies, such as straw and film mulching, more and more rainfall water has been stored in deep soil [4,5] in a semiarid region. By changing fertilizer management and the cropping system, agricultural scientists have increased water-use efficiency signifi...

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“…The previous studies on the changes in water surplus and loss in the Loess Plateau of China and the northwestern arid regions in China show that the water deficit situation in this region was grim, mainly as a result of climatic changes [43][44][45]. Meteorological factors such as precipitation, temperature and wind speed had a great influence on the change of water surplus and loss, especially precipitation which was the dominant factor influencing water evapotranspiration changes [46][47][48]. The study also indicated that some factors like temperature, solar radiation, and wind speed showed a positive correlation with changes in water profit and loss, while precipitation showed a negative correlation [49].…”

Section: Comparison With Previous Researchmentioning

confidence: 97%

Spatio-Temporal Variations in Farmland Water Conditions in the Yanhe River Basin

Wang

Song

Yuan

et al. 2019

Water

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To gain a deeper understanding of the influence of climate change on water cycling and water resources, it is important to investigate the changes in farmland moisture profits and losses and the influencing factors. In view of this, using the Yanhe River Basin as an example, we adopted the Penman–Monteith model to calculate the amounts of moisture profit and loss in the basin and analyzed the spatio-temporal variations of moisture profit and loss from 2003 to 2015. Based on our results, the Yanhe River Basin was characterized by water shortage from 2003 to 2015. From 2003 to 2007, the water deficit of the basin was obvious, while from 2007 to 2011, the water shortage was moderate. From 2011 to 2015, the area experienced an aggravated water deficit. Overall, from 2003 to 2015, the area proportions of the regions with normal and mild water deficits decreased by 32.65% and 18.98%, respectively, while the area proportion of the regions with acute water deficits increased by 32.97%. In terms of the spatial distribution of moisture profits and losses in the Yanhe River Basin, the water deficit was gradually mitigated from northwest to southeast. Precipitation and near-surface air specific humidity were the main factors influencing the water conditions in the river basin.

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Spatial and temporal evolution of climatic factors and its impacts on potential evapotranspiration in Loess Plateau of Northern Shaanxi, China

Cited by 86 publications

References 29 publications

Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Response of Soil Water and Wheat Yield to Rainfall and Temperature Change on the Loess Plateau, China

Spatio-Temporal Variations in Farmland Water Conditions in the Yanhe River Basin

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