Impacts of Climate Change on Winter Wheat Growing Period and Irrigation Water Requirements in the North China Plain

Wei, 胡玮 Hu; Changrong, 严昌荣 Yan; Yingchun, 李迎春 Li; Qin, 刘勤 Liu

doi:10.5846/stxb201308052022

Cited by 6 publications

(1 citation statement)

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“…Similar results have also been found in regions near our study area. Hu et al [47] reported a decrease in IWR for winter wheat in the northern part of the North China Plain (NCP) from 1981 to 2010, and Huan et al [48] reported a decrease in irrigation requirements for summer maize from 1980 to 2014 in the middle of Shandong Province.…”

Section: Credibility Of Resultsmentioning

confidence: 99%

Hydrologic Simulation of a Winter Wheat–Summer Maize Cropping System in an Irrigation District of the Lower Yellow River Basin, China

Liu

Luo

et al. 2017

Water

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Conflicts between water supply and water demand are intensifying in irrigation districts along the Lower Yellow River due to climate change and human activities. To ensure both adequate food supply and water resource sustainability in China, the Soil and Water Assessment Tool (SWAT) model was used to simulate the water balance and water use of agro-ecosystems in an irrigation district of the lower Yellow River Basin, China. Simulated average annual irrigation requirements decreased from 1969 to 2010. Irrigation requirements during the winter wheat season decreased owing to reduced reference evapotranspiration and increased precipitation. Annual evapotranspiration (ET) increased with increasing irrigation volume, and differences among irrigation scenarios were mainly due to ET of winter wheat. Water deficit typically occurred during winter wheat seasons with less precipitation. Field seepage and surface runoff tended to occur in years with high precipitation, particularly during the summer maize season under full irrigation and scheduled irrigation scenarios. Frequent and heavy irrigation did not always lead to high water use efficiency. To cope with limited water resources in this region, it is necessary to properly irrigate crops based on soil water content and take full advantage of precipitation and surface runoff during the summer maize season.

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Section: Credibility Of Resultsmentioning

confidence: 99%

Hydrologic Simulation of a Winter Wheat–Summer Maize Cropping System in an Irrigation District of the Lower Yellow River Basin, China

Liu

Luo

et al. 2017

Water

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Adaptive capacity of winter wheat to potential drought in Beijing–Tianjin–Hebei region under RCP8.5 scenario

Ying,

Ma,

Yingchun

et al. 2024

Climate Resilience

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Drought is more frequent and intensified due to global warming. Changed conditions in Beijing‐Tianjin–Hebei region which is drier and warmer than before, make it necessary to investigate various optimized irrigation schemes in the winter wheat production. In this study, the DSSAT–CERES‐Wheat model verified by field experimental data was applied to simulate the yield of winter wheat in Beijing–Tianjin–Hebei region from 2010 to 2069a under RCP8.5 climate scenario. The irrigation schemes were set up by adjusting the irrigation amount and irrigation structure to evaluate their adaptive capacity to climate change. The results showed that the regional average yield reduction rates of potential drought were 81.98% and 78.86% in 2010–2039a and 2040–2069a, which were higher in the north than that in the south. The yield reduction rate of potential drought increased with the decrease of irrigation amount, and the adaptive capacity declined with the decrease of irrigation amount, under the same irrigation structure. When 3‐9‐6 irrigation structure was applied, the regional averages of adaptive capacity to potential drought were 28.30%, 26.23%, and 22.22% in 2010–2039a, 29.00%, 26.67%, and 21.76% in 2040–2069a. The shortage of water resources caused by climate change and the possibility of drought limit the potential yield of winter wheat as high as 80% in this region. Priority shall be given to meeting the water demand in jointing stage and filling stage. Irrigation scheme of 3‐9‐6 structure with 180 mm irrigation amount shall be recommended and its adaptive capacity to climate change is the strongest in the near term and the medium‐term. Even if a further 20% reduction in irrigation is applied (144 mm), the dual goals of reducing yield loss and saving 8.28 × 108 t irrigation water per winter wheat season can be achieved.

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Soil hydrologic properties in permanent raised beds—A field study experiment on wheat–maize cropping systems

Lin

et al. 2022

Land Degrad Dev

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Permanent raised beds (PRB) are widely applied in agriculture around the World and have proven to be an excellent option for crops (wheat, maize, etc.). In particular, they have the potential to conserve soil and water resources in agricultural production globally. Many researchers are studying the effects of PRB on soil chemical properties (N, P, K, and SOC), plant growth characteristics, and water use efficiency in different regions. However, few experiments have investigated the soil's hydraulic performance. In this study, a 6-year field experiment was conducted under a maizewheat rotation cropping system in North China Plain (NCP). The effects on the soil's hydraulic properties of no-tillage (NT) and traditional tillage (TT) on flat fields and notill PRB treatments were assessed. Specifically, nine soil samples were collected at 0-15 cm depth and 15-30 cm depth to assess the soil's hydraulic performance. The results showed that the total porosity under PRB (42.1%, 15-30 cm) was significantly improved by 13.5% compared to TT (37.1%, 15-30 cm). The soil organic carbon under PRB (8.65%, 15-30 cm) was increased by 13.82% compared to TT (7.6%, 15-30 cm). Changes in the slope (b) of the soil water retention characteristic curve under the PRB (7.2, 15-30 cm) treatment were indicative of an improvement in the pore size distribution, increased soil water retention, and greater infiltration rates. In addition, positive changes in lateral water infiltration from furrow irrigation were observed under PRB (over 25 mm min -1 in 45 min). These improved soil physical parameters demonstrated that PRB can offer more possibilities for water conservation in the field. In addition, the application of PRB and the principles of conservation agriculture have potential for the effective of water use efficiency and for improving the quality of soil.

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Impacts of Climate Change on Winter Wheat Growing Period and Irrigation Water Requirements in the North China Plain

Cited by 6 publications

References 0 publications

Hydrologic Simulation of a Winter Wheat–Summer Maize Cropping System in an Irrigation District of the Lower Yellow River Basin, China

Hydrologic Simulation of a Winter Wheat–Summer Maize Cropping System in an Irrigation District of the Lower Yellow River Basin, China

Adaptive capacity of winter wheat to potential drought in Beijing–Tianjin–Hebei region under RCP8.5 scenario

Soil hydrologic properties in permanent raised beds—A field study experiment on wheat–maize cropping systems

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