The impact of local crops consumption on the water resources in Beijing

Huang, Jing; Zhang, Hai‐Lin; Tong, Wenjie; Chen, Fu

doi:10.1016/j.jclepro.2011.09.014

Cited by 67 publications

(17 citation statements)

References 25 publications

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“…Vale destacar, mesmo que os cultivos de soja tenham sido irrigados em Maringá, os valores elevados de PHcinza (420 m³ t -1 ), contribuíram para evidenciar que houve redução na eficiência do uso de água nos cultivos de soja. Na China, a PHtotal da soja foi de 1.816 m³ t -1 (Huang et al, 2012), diferente dos valores encontrados por Costa et al (2016), também no Pará, mas no polo de grãos Paragominas, com valores da ordem de 1.327 m³ t -1 , os quais foram inferiores aos valores médios globais para a soja (2.144 m³ t -1 ), apresentados por Mekonnen e Hoekstra (2010).…”

Section: Resultsunclassified

Dinâmica temporal da pegada hídrica por cultivar de soja em polo de grãos no Oeste do Pará, Amazônia

et al. 2018

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O objetivo neste trabalho foi analisar a dinâmica temporal da pegada hídrica de oito cultivares de soja, plantadas na região do Oeste do Pará. Foram utilizados dados meteorológicos correspondentes ao período de 2009 a 2014 para calcular as taxas evapotranspiratórias da cultura. Como a Pegada Hídrica é subdividida em verde, azul e cinza e, na região os cultivos não são irrigados contabilizou-se apenas a verde e a cinza. A PHverde foi estimada considerando-se o total de água consumida durante o ciclo de cada cultivar. A PHcinza foi avaliada utilizando como fator contaminante em corpos hídricos o composto nitrato que está presente nos fertilizantes nitrogenados, conforme as concentrações aceitáveis pelo CONAMA 357/2005. Considerou-se dois valores para as doses de N, sendo 30 kg ha-1 com base na adubação descrita na literatura, bem como o N existente nas formulações (2:20:20) dos adubos vendidos na região, sendo 2 kg ha-1 o máximo utilizado na adubação de cobertura. Entre as oito cultivares analisadas, em termos de indicador de baixa pegada hídrica, as cultivares BRS 278 RR; BRS 325 RR e BRS 333 RR foram as mais expressivas no polo de grãos no oeste do Pará, evidenciando o uso eficiente da água disponível em todos os anos/safras analisados. A soja produzida no oeste do Pará possui baixa pegada hídrica cinza. Todavia, os valores de redução da produtividade em anos safra na região comprometem a pegada hídrica verde pela sojicultura na região, evidenciando que esse indicador deve ser analisado considerando as especificidades de cada cultivar de soja. O valor da pegada hídrica total estimada neste trabalho foi inferior aos obtidos na literatura, reforçando a importância de estimar a Pegada Hídrica (PH) como indicador de uso consuntivo de água em cultivos de grãos na Amazônia.

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Section: Resultsunclassified

Dinâmica temporal da pegada hídrica por cultivar de soja em polo de grãos no Oeste do Pará, Amazônia

et al. 2018

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“…The per capita GDP in Beijing has increased from $1,009 to $13,857, a 13-fold increase [33]. Since China joined the WTO in 2001, Beijing has actively adjusted the direction of development and made an effort to establish a resource-saving industrial structure and an export-oriented trade structure; as a result, Beijing has imported large quantities of agricultural products from other regions [47]. Trade in agricultural products not only plays a positive role in ensuring the healthy development of the social economy of Beijing but also inhibits the agricultural WF within Beijing.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Influencing Factors of Water Footprint Based on the STIRPAT Model: Evidence from the Beijing Agricultural Sector

Chen

Huang

et al. 2016

Water

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Abstract:Beijing suffers from a severe water shortage. To find the key factors that impact the agricultural water footprint (WF) within Beijing to relieve the pressure on water resources, this study quantifies the agricultural WF within Beijing from 1980 to 2012 and examines the factors of population, urbanization level, GDP per capita, Engel coefficient, and total rural power using an extended stochastic impact by regression on population, affluence and technology (STIRPAT) model. Ridge regression is employed to fit the extended STIRPAT model. The empirical results reveal that the Engel coefficient, which is defined as the total amount of food expenses accounted for the proportion of total personal consumption expenditures, has the largest positive impact on the increase in the agricultural WF, followed by urbanization. In contrast, total rural power, population, and GDP per capita can decrease the agricultural WF. Finally, policy recommendations from technological development, agriculture plantation structure adjustment, and virtual water imports are provided to cope with water shortages.

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“…Zhang et al () found that 51% of Beijing’s water footprint was acquired through virtual water import in other provinces and that interregional trade coordination was important for enhancing the efficiency of regional and national water resource utilization. Huang et al () found that consumption of local crops greatly impacted Beijing’s water resources and recommended an increased focus on optimizing crop production in farms for reducing Beijing’s water footprint. Fan et al () assessed the implementation of the strictest administration of water resources in Beijing and suggested that Beijing still needed to improve its water resources management agencies, take effective economic measures, and develop advanced water‐saving techniques.…”

Section: Introductionmentioning

confidence: 99%

Available Water Supplies in Beijing, China, Under Single‐ and Multi‐Year Drought

Chang

Zhao

Wang

et al. 2020

J American Water Resour Assoc

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Research Impact Statement: Importance of the MR-SNWDP (middle route of the South-to-North Water Diversion Project) for ensuring available water supplies in Beijing.ABSTRACT: Since its implementation in 2015, the Middle Route of the South-to-North Water Diversion Project (MR-SNWDP) has transferred an average of 45 billion cubic meters of surface water per year from the Yangtze River in southern China to the Yellow River and Hai River Basin in northern China, but how that supply is able to cope with droughts under different scenarios has not been explored. In this study, using the water demand for 2020 as the guaranteed water target, a Water Evaluation and Planning system was used to simulate available water supplies in Beijing under different drought scenarios. In the case of a single-year drought, without the MR-SNWDP, Beijing's water shortage ratio was 16.7%; with the MR-SNWDP, this ratio reduced to 7.3%. In the case of a multi-year drought, without the MR-SNWDP, Beijing's water shortage ratio was 25.3%; with the MR-SNWDP, this ratio reduced to 7.4% and domestic water supply was improved. Our research suggests that to prepare for multi-year drought in the Beijing area, the SNWDP supports increased supplies to the region that would mitigate drought effects. This study is, however, mostly focused on water supply provision to Beijing and does not comprehensively evaluate other potential impacts. Multiple additional avenues could be pursued that include replenishing groundwater, increasing reservoir storage, and water conservation methods. Further research is needed to explore the relative costs and benefits of these approaches.

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The impact of local crops consumption on the water resources in Beijing

Cited by 67 publications

References 25 publications

Dinâmica temporal da pegada hídrica por cultivar de soja em polo de grãos no Oeste do Pará, Amazônia

Dinâmica temporal da pegada hídrica por cultivar de soja em polo de grãos no Oeste do Pará, Amazônia

Analysis of Influencing Factors of Water Footprint Based on the STIRPAT Model: Evidence from the Beijing Agricultural Sector

Available Water Supplies in Beijing, China, Under Single‐ and Multi‐Year Drought

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