The impact of cropland spatial shift on irrigation water use in China

Xiang, Wenli; Tan, Minghong; Yang, Xue; Li, Xiubin

doi:10.1016/j.eiar.2022.106904

Cited by 13 publications

(2 citation statements)

References 66 publications

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“…The spatiotemporal continuous datasets enable us to track the long-term changes in the agricultural systems, which could be updated to 2023 or the coming years to reflect near real-time changes in cropland and agricultural practices. www.nature.com/scientificdata www.nature.com/scientificdata/ Sustained productivity of stable cropland is crucial for ensuring global food security 55 . Sustainable intensification in cropping systems is essential to meet the increasing food demand of the global population 56 .…”

Section: Usage Notesmentioning

confidence: 99%

National-scale 10-m maps of cropland use intensity in China during 2018–2023

Qiu,

Liu,

Tang

et al. 2024

Sci Data

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The amount of actively cultivated land in China is increasingly threatened by rapid urbanization and rural population aging. Quantifying the extent and changes of active cropland and cropping intensity is crucial to global food security. However, national-scale datasets for smallholder agriculture are limited in spatiotemporal continuity, resolution, and precision. In this paper, we present updated annual Cropland Use Intensity maps in China (China-CUI10m) with descriptions of the extent of fallow/abandoned, actively cropped fields and cropping intensity at a 10-m resolution in recent six years (2018–2023). The dataset is produced by robust algorithms with no requirements for regional adjustments or intensive training samples, which take full advantage of the Sentinel-1 (S1) SAR and Sentinel-2 (S2) MSI time series. The China-CUI10m maps have achieved high accuracy when compared to ground truth data (Overall accuracy = 90.88%) and statistical data (R2 > 0.94). This paper provides the recent trends in cropland abandonment and agricultural intensification in China, which contributes to facilitating geographic-targeted cropland use control policies towards sustainable intensification of smallholder agricultural systems in developing countries.

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Section: Usage Notesmentioning

confidence: 99%

National-scale 10-m maps of cropland use intensity in China during 2018–2023

Qiu,

Liu,

Tang

et al. 2024

Sci Data

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“…Simulation models contribute to better understanding how microclimate effects on transpiration and photosynthesis (Jones, 2007) and for optimizing irrigation water management (Droogers et al, 2000). The models allow a combined assessment of various factors affecting yield to obtain optimal irrigation in different scenarios (Liu et al, 2007) and are particularly useful in expensive studies or in studies where long-term effects may be difficult to observe (Xiang et al, 2022). CROPWAT 8.0 is a decision support program for the calculation of crop water requirements and irrigation requirements based on soil, climate and crop data developed by the Land and Water Development Division of FAO (Smith, 1992).…”

Section: Introductionmentioning

confidence: 99%

Quantitative Prediction of Tomato Irrigation Needs Using Cropwat

Grancharova,

Elenov,

Janevska

2022

JAFES

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Emerging climate changes and rapidly growing demand for food are creating preconditions for making water an increasingly valuable resource and irrigation management assumed greater importance and increasingly responsible essential role. This study uses CROPWAT 8.0 model by FAO to predict and simulate crop water requirements for greenhouse tomato production in Chelopechene experimental field of the Institute of soil science, agrotechnologies and plant protection in Sofia, Bulgaria. The main input data are climatic data, crop data and soil data. The simulation results analysis suggests that an actual irrigation requirement of tomato is 489.5 mm. This study has proved that decision support tools like CROPWAT 8.0 are useful for irrigation planning and management and could be used by farmers to determine irrigation requirement and frequency, as well as contribute to saving water resources.

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