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Title: Agriculture intensifies soil moisture decline in Northern China

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep11261· OSTI ID:1197089

Northern China is one of the most densely populated regions in the world. Agricultural activities have intensified since the 1980s to provide food security to the country. However, this intensification has likely contributed to an increasing scarcity in water resources, which may in turn be endangering food security. Based on in-situ measurements of soil moisture collected in agricultural plots during 1983–2012, we find that topsoil (0–50 cm) volumetric water content during the growing season has declined significantly (p<0.01), with a trend of -0.011 to -0.015 m3 m-3 per decade. Observed discharge declines for the three large river basins are consistent with the effects of agricultural intensification, although other factors (e.g. dam constructions) likely have contributed to these trends. Practices like fertilizer application have favoured biomass growth and increased transpiration rates, thus reducing available soil water. In addition, the rapid proliferation of water-expensive crops (e.g., maize) and the expansion of the area dedicated to food production have also contributed to soil drying. Adoption of alternative agricultural practices that can meet the immediate food demand without compromising future water resources seem critical for the sustainability of the food production system.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1197089
Report Number(s):
PNNL-SA-110582; KP1703030
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

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Cited By (16)

A hydrological emulator for global applications – HE v1.0.0 journal January 2018
Climate change, reforestation/afforestation, and urbanization impacts on evapotranspiration and streamflow in Europe journal January 2019
Evaluation of ORCHIDEE-MICT-simulated soil moisture over China and impacts of different atmospheric forcing data journal January 2018
Land-atmospheric feedbacks during droughts and heatwaves: state of the science and current challenges text January 2019
Revegetation with artificial plants improves topsoil hydrological properties but intensifies deep-soil drying in northern Loess Plateau, China journal April 2018
NDVI‐based estimates of evapotranspiration of winter wheat indicate positive effects of N fertilizer application on agronomic water‐use efficiency journal October 2019
Multimodel assessments of human and climate impacts on mean annual streamflow in China journal January 2019
High-resolution gridded soil moisture and soil temperature datasets for the Indian monsoon region journal November 2018
Evaluating the patterns of spatiotemporal trends of root zone soil moisture in major climate regions in East Asia: Trend of Root Zone Soil Moisture journal August 2017
A non-linear Granger-causality framework to investigate climate–vegetation dynamics journal January 2017
Land-atmospheric feedbacks during droughts and heatwaves: state of the science and current challenges: Land feedbacks during droughts and heatwaves journal June 2018
Climate change, reforestation/afforestation, and urbanization impacts on evapotranspiration and streamflow in Europe text January 2019
Strategies for reducing the fertilizer application rate in the ridge and furrow rainfall harvesting system in semiarid regions journal June 2017
Sap flow of black locust in response to short-term drought in southern Loess Plateau of China journal April 2018
An integrated soil-crop system model for water and nitrogen management in North China journal May 2016
Overexpression of Pyrabactin Resistance-Like Abscisic Acid Receptors Enhances Drought, Osmotic, and Cold Tolerance in Transgenic Poplars journal October 2017

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