High-spatiotemporal-resolution mapping of global urban change from 1985 to 2015

Nature Sustainability, Journal Year: 2020, Volume and Issue: 3(7), P. 564 - 570

Published: May 4, 2020

Language: Английский

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Global projections of future urban land expansion under shared socioeconomic pathways

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Jan. 27, 2020

Abstract Despite its small land coverage, urban and expansion have exhibited profound impacts on global environments. Here, we present the scenario projections of under framework shared socioeconomic pathways (SSPs). Our feature a fine spatial resolution 1 km to preserve details. The reveal that although continues expand rapidly before 2040s, China many other Asian countries are expected encounter substantial pressure from population decline after 2050s. Approximately 50–63% newly expanded is occur current croplands. Global crop production will by approximately 1–4%, corresponding annual food needs for certain 122–1389 million people. These findings stress importance governing development as key measure mitigate negative production.

Language: Английский

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The Global Food‐Energy‐Water Nexus

Reviews of Geophysics, Journal Year: 2018, Volume and Issue: 56(3), P. 456 - 531

Published: April 20, 2018

Abstract Water availability is a major factor constraining humanity's ability to meet the future food and energy needs of growing increasingly affluent human population. plays an important role in production energy, including renewable sources extraction unconventional fossil fuels that are expected become players security. The emergent competition for water between systems recognized concept “food‐energy‐water nexus.” nexus made even more complex by globalization agriculture rapid growth trade, which results massive virtual transfer among regions security some regions. This review explores multiple components food‐energy‐water highlights possible approaches could be used with limited resources planet. Despite clear tensions inherent meeting changing demand 21st century, linkages food, water, can offer opportunity synergistic strategies aimed at resilient security, such as circular economy.

Language: Английский

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Wheat yield loss attributable to heat waves, drought and water excess at the global, national and subnational scales

Environmental Research Letters, Journal Year: 2017, Volume and Issue: 12(6), P. 064008 - 064008

Published: June 5, 2017

Heat waves and drought are often considered the most damaging climatic stressors for wheat. In this study, we characterize attribute effects of these climate extremes on wheat yield anomalies (at global national scales) from 1980 to 2010. Using a combination up-to-date heat wave indexes (the latter capturing both excessively dry wet conditions), have developed composite indicator that is able capture spatio-temporal characteristics underlying physical processes in different agro-climatic regions world. At level, our diagnostic explains significant portion (more than 40%) inter-annual production variability. By quantifying contribution fluctuations, found just two concurrent affecting larger producers world could be responsible more half annual fluctuations. The relative importance stress determining depends region. Moreover, contrast common perception, water excess affects several countries. We also performed same analysis at subnational level France, which largest producer European Union, home range zones. Large variability mostly captured by indicators, consistently with country-level result.

Language: Английский

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Biodiversity impacts and conservation implications of urban land expansion projected to 2050

Proceedings of the National Academy of Sciences, Journal Year: 2022, Volume and Issue: 119(12)

Published: March 14, 2022

SignificanceUnderstanding the impacts of urbanization and associated urban land expansion on species is vital for informed planning that minimizes biodiversity loss. Predicting habitat will be lost to over 30,000 under three different future scenarios, we find up 855 are directly threatened due unmitigated urbanization. Our projections pinpoint rapidly urbanizing regions sub-Saharan Africa, South America, Mesoamerica, Southeast Asia where, without careful planning, expected cause particularly large findings highlight urgent need an increased focus in global conservation strategies identify high-priority areas this engagement.

Language: Английский

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The Challenge of Feeding the World

Sustainability, Journal Year: 2019, Volume and Issue: 11(20), P. 5816 - 5816

Published: Oct. 20, 2019

The aim of the present research is to provide a comprehensive review about current challenges related food security and hidden hunger. Issues are presented according major factors, such as growing population, changing dietary habits, water efficiency, climate change volatile prices. These factors were compiled from reports international organizations relevant scientific articles on subject. Collecting results presenting them in an accessible manner may new insight for interested parties. Accessibility data extremely important, since its drivers form closely interconnected but complex network, which requires coordinated problem solving resolve issues. According results, demand agricultural products has been partly met by increasing cultivated land recent decades. At same time, there serious competition existing areas, further limits extension addition natural constraints availability. Agricultural production needs expand faster than population growth without damage environment. driving force behind development sustainable intensive farming, means more effective utilization resources. Current global trends consumption unsustainable, analyzed terms either public health, environmental impacts or socio-economic costs. should strive consumption, social, health very important this respect well. To end, benefits consuming foods that less harmful environment during also be emphasized scope policy education nutrition opposed other types, causes raw materials.

Language: Английский

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Research gaps in knowledge of the impact of urban growth on biodiversity

Nature Sustainability, Journal Year: 2019, Volume and Issue: 3(1), P. 16 - 24

Published: Dec. 9, 2019

Language: Английский

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Direct and indirect loss of natural area from urban expansion

Nature Sustainability, Journal Year: 2019, Volume and Issue: 2(8), P. 755 - 763

Published: July 29, 2019

Language: Английский

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Trends in urban land expansion, density, and land transitions from 1970 to 2010: a global synthesis

Environmental Research Letters, Journal Year: 2020, Volume and Issue: 15(4), P. 044015 - 044015

Published: March 20, 2020

Abstract The physical expansion of urban areas lead to lasting impacts on landscapes and livelihoods. Here, we conduct a global synthesis trends in land expansion, population densities, lands converted into from 1970 2010. We find that small-medium their larger counterparts both rates decreases densities. Urban densities have consistently declined only India, China, North America, Europe with significant exceptions across city sizes. Over 60% the reported was formerly agricultural Southeast Asia, lead. Counterfactual analysis suggests that, due decrease an estimated 125 000 km 2 uses could otherwise remained cultivation or as natural vegetation. In particular, India Nigeria, much populations dependent agriculture, 85% 30% more land, respectively, decreasing With increasing urbanization, proactive management especially small medium cities, will be critical for saving peri-urban regions while creating equitable affordable landscapes.

Language: Английский

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The Impact of Population Growth on Natural Resources and Farmers’ Capacity to Adapt to Climate Change in Low-Income Countries

Earth Systems and Environment, Journal Year: 2021, Volume and Issue: 5(2), P. 271 - 283

Published: March 16, 2021

Language: Английский

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