ArticleNature food2021
Food and feed trade has greatly impacted global land and nitrogen use efficiencies over 1961-2017.
Article in Nature food, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
11 citing papers in PubMed.
- Limited net-export capacity undermines the Netherlands' 'feeding the world' narrative.Nature food · 2026Article
- Exploring finger millet as an underutilised African indigenous grain crop for functional food development, sustainable nutrition, and health.Frontiers in nutrition · 2026Review
- Indirect emissions from food systems result in substantial and unequal health burdens.Nature food · 2025Article
- Indirect emissions contribute a quarter of air pollution-related health burden of food systems in China.Nature food · 2025Article
- Coordinated Development and Spatiotemporal Evolution Trends of China's Agricultural Trade and Production from the Perspective of Food Security.Foods (Basel, Switzerland) · 2025Article
- Decline in carbon emission intensity of global agriculture has stagnated recently.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Did the International Trade in Crops Lead to Global Cropland Saving or Wasting in the Period 2000-2022?Foods (Basel, Switzerland) · 2024Article
- Redistribution of nitrogen to feed the people on a safer planet.PNAS nexus · 2024Article
- Uneven agricultural contraction within fast-urbanizing urban agglomeration decreases the nitrogen use efficiency of crop production.Nature food · 2024Article
- Article
- Dietary grape pomace extract supplementation improved meat quality, antioxidant capacity, and immune performance in finishing pigs.Frontiers in microbiology · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
16 authors.
Funding
Abstract
International trade of agricultural products has complicated and far-reaching impacts on land and nitrogen use efficiencies. We analysed the productivity of cropland and livestock and associated use of feed and fertilizer efficiency for over 240 countries, and estimated these countries' cumulative contributions to imports and exports of 190 agricultural products for the period 1961-2017. Crop trade has increased global land and partial fertilizer nitrogen productivities in terms of protein production, which equalled savings of 2,270 Mha cropland and 480 Tg synthetic fertilizer nitrogen over the analysed period. However, crop trade decreased global cropland productivity when productivity is expressed on an energy (per calorie) basis. Agricultural trade has generally moved towards optimality, that is, has increased global land and nitrogen use efficiencies during 1961-2017, but remains at a relatively low level. Overall, mixed impacts of trade on resource use indicate the need to rethink trade patterns and improve their optimality.
Identifiers
37117983What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.