Increased crop water requirements have exacerbated water stress in the arid transboundary rivers of Central Asia

Ruan, Hongwei; Yu, Jingjie; Wang, Ping; Wang, Tianye

doi:10.1016/j.scitotenv.2020.136585

Cited by 32 publications

(9 citation statements)

References 46 publications

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“…However, we find that the technological advances sometimes exert a negative effect for achieving SDG 6. The precipitation, the technological advances, and the ecological water flow act jointly on water resources and economic system, inducing the WRRE that implies that the vast majority of the technology-saved water is used to enlarge the production scale and rarely flow into ecology, in particular agriculture [44], leading to increase demand of water in economy [45]. For example, development of the water-saving society at Zhangye city in the Heihe River Basin stimulates application of new irrigation techniques including low-pressure pipe irrigation, drip irrigation, and spray irrigation, increasing the efficient water-saving irrigation area by 432.7% (from 7.0 × 10 3 ha to 37.1 × 10 3 ha) from 2000 to 2010 at three counties of this city, nevertheless, expanding irrigation area by 12.3%, from 160.3 × 10 3 ha in 2000 to 180.0 × 10 3 ha in 2010, which causes that water consumption in agriculture increases 21.2%, from 0.9 × 10 9 m 3 in 2000 to 1.1 × 10 9 m 3 in 2010 [46,47].…”

Section: Interaction Between the Wrre And Sdgmentioning

confidence: 99%

The Water Resources Rebound Effect Threatening the Achievement of Sustainable Development Goal 6 (SDG 6)

Ge,

Wang

2024

Sustainability

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Coaction of climate change and human activities exerts a significant impact on the fate of water resources, provoking the rebound effect in water resources and threatening the achievement of SDG (sustainable development goal) 6. However, the mechanisms of interactions between this effect and SDG 6 and how to decrease this effect towards the achievement of SDG 6 are less known. In this paper, a water resources rebound effect (WRRE) model is integrated into a river basin sustainable development decision support system to simulate and project the interactions between the WRRE and SDG 6 under multiple combination scenarios. The results show that multiple drivers, including precipitation, technological advances, and ecological water flow, coaffect the WRRE, not the silo technology factor. The transfer fate of the saved water is a major root cause leading to the WRRE and harming the achievement of SDG 6, and the WRRE is positively correlated to SDG 6 overall, which, nevertheless, can sometimes be reversed by technological advances. Our outcomes indicate that decoupling SDG 6 from the WRRE can promote the achievement of SDG 6 and decrease the rebound effect, relying on holistic integration that couples climatic, socioeconomic, and behavioral interaction between SDG 6 and the WRRE and translation of scientific research into available decision-making information for strict scientific-research-based policy actions.

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Section: Interaction Between the Wrre And Sdgmentioning

confidence: 99%

The Water Resources Rebound Effect Threatening the Achievement of Sustainable Development Goal 6 (SDG 6)

Ge,

Wang

2024

Sustainability

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“…This dryland is heavily dependent on snowmelt streamflow supplied by trans-border rivers with headwaters in the Tian Shan Mountains and the Pamir Plateau to the west. Although water conservancy facilities in Central Asia are relatively good, the rapidly increasing demand for water resources have strained supplies in the region (Howard & Howard, 2016;Jalilov et al, 2018;Ruan et al, 2020;Su et al, 2021). As two main sources of fresh water, precipitation and streamflow need to be recorded for a long time to support water resource planning (Fritts, 1976;Meko et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Streamflow reconstruction in the Kafirnigan River, Tajikistan since 1568 CE reveals a linkage between southern Central Asian hydrological variation and ENSO

Zulfiyor

Opała‐Owczarek

Chen

et al. 2023

Intl Journal of Climatology

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Long‐term hydroclimate change can provide reliable reference for water resources management in Central Asia. However, only a few palaeohydrological records exist in Tajikistan. To obtain a long‐term perspective on hydrological changes in Tajikistan, we developed, for the first time, a streamflow reconstruction from September of the previous year to June of the current one in the Kafirnigan River basin, based on Juniperus semiglobosa tree‐ring width indices from the Iskanderkul area in northern Tajikistan. The streamflow reconstruction explains 40% of the actual streamflow variance during the period 1939–1993. Spatial correlation analyses with gridded precipitation data indicate that our streamflow reconstruction contains a strong regional hydroclimatic signal for southern Central Asia. The high and low intervals of our streamflow reconstruction are closely related to the interdecadal variations of El Niño‐Southern Oscillation (ENSO). Our reconstructed streamflow is significantly correlated with sea surface temperatures in the eastern equatorial Pacific Ocean and northern Indian Ocean, indicate the existence of remarkable 11‐, 5.6–5.7‐, 4.3‐, 2.6‐, 2.3‐ and 2.0‐year cycles, and suggest a relationship between southern Central Asian streamflow variations and ENSO activity.

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“…For example, Wu et al calculated the irrigation water requirements and analyzed the spatio-temporal variations from 1980 to 2012 of the North China Plain [ 12 ]. Ruan et al estimated CWR in the Syr Darya Basin of Central Asia and investigated the dominant factors of CWR variations [ 13 ]. Yang et al projected the future irrigation water requirement under two different climate scenarios in the Lower Mississippi Alluvial Valley [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Does Climate Change Increase Crop Water Requirements of Winter Wheat and Summer Maize in the Lower Reaches of the Yellow River Basin?

Kang

Zhang

Xue

et al. 2022

IJERPH

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With increasing water resources stress under climate change, it is of great importance to deeply understand the spatio-temporal variation of crop water requirements and their response to climate change for achieving better water resources management and grain production. However, the quantitative evaluation of climate change impacts on crop water requirements and the identification of determining factors should be further explored to reveal the influencing mechanism and actual effects thoroughly. In this study, the water requirements of winter wheat and summer maize from 1981 to 2019 in the lower reaches of the Yellow River Basin were estimated based on the Penman–Monteith model and crop coefficient method using daily meteorological data. Combined with trends test, sensitivity and contribution analysis, the impacts of different meteorological factors on crop water requirement variation were explored, and the dominant factors were then identified. The results indicated that the temperature increased significantly (a significance level of 0.05 was considered), whereas the sunshine duration, relative humidity and wind speed decreased significantly from 1981 to 2019 in the study area. The total water requirements of winter wheat and summer maize presented a significant decreasing trend (−1.36 mm/a) from 1981 to 2019 with a multi-year average value of 936.7 mm. The crop water requirements of winter wheat was higher than that of summer maize, with multi-year average values of 546.6 mm and 390.1 mm, respectively. In terms of spatial distribution patterns, the crop water requirement in the north was generally higher than that in the south. The water requirements of winter wheat and summer maize were most sensitive to wind speed, and were less sensitive to the minimum temperature and relative humidity. Wind speed was the leading factor of crop water requirement variation with the highest contribution rate of 116.26% among the considered meteorological factors. The results of this study will provide important support for strengthening the capacity to cope with climate change and realizing sustainable utilization of agricultural water resources in the lower reaches of the Yellow River Basin.

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Increased crop water requirements have exacerbated water stress in the arid transboundary rivers of Central Asia

Cited by 32 publications

References 46 publications

The Water Resources Rebound Effect Threatening the Achievement of Sustainable Development Goal 6 (SDG 6)

The Water Resources Rebound Effect Threatening the Achievement of Sustainable Development Goal 6 (SDG 6)

Streamflow reconstruction in the Kafirnigan River, Tajikistan since 1568 CE reveals a linkage between southern Central Asian hydrological variation and ENSO

Does Climate Change Increase Crop Water Requirements of Winter Wheat and Summer Maize in the Lower Reaches of the Yellow River Basin?

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