Zhaohai Bai

Center for Agricultural Resources Research

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Lin Ma

Hebei Agricultural University

Carolien Kroeze

Wageningen University & Research

Maryna Strokal

Wageningen University & Research

O. Oenema

China Agricultural University

Yubo Cao

Institute of Genetics and Developmental Biology

Wei Qin

University of Washington

T. H. Misselbrook

Rothamsted Research

G.L. Velthof

Wageningen University & Research

Xuan Wang

Arizona State University

David R. Chadwick

Bangor University

Cooperative Institutions

Chinese Academy of Sciences

Institute of Genetics and Developmental Biology

Center for Agricultural Resources Research

China Agricultural University

Ministry of Agriculture and Rural Affairs

University of Chinese Academy of Sciences

Wageningen University & Research

International Institute for Applied Systems Analysis

Chinese Academy of Agricultural Sciences

Northwest A&F University

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A higher water-soluble phosphorus supplement in pig diet improves the whole system phosphorus use efficiency

Journal of Cleaner Production (2020)

Liu Ling Yongqing Guo Yan Tu Naifeng Zhang Zhaohai Bai

Manure management

Phosphorus deficiency

10.1016/j.jclepro.2020.122586

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Citations (8)

Ammonia mitigation effects from the cow housing and manure storage chain on the nitrogen and carbon footprints of a typical dairy farm system on the North China Plain

Journal of Cleaner Production (2020)

Nannan Zhang Zhaohai Bai S.F. Ledgard Jiafa Luo Lin Ma

Manure management

Nitrous oxide

Carbon Footprint

10.1016/j.jclepro.2020.124465

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Citations (21)

Cost-effective management of coastal eutrophication: A case study for the Yangtze river basin

Resources Conservation and Recycling (2019)

Maryna Strokal Taher Kahil Yoshihide Wada José Albiac Zhaohai Bai

Many water resources are threatened with nutrient pollution worldwide. This holds for rivers exporting increasing amounts of nutrients from the intensification of food production systems and further urbanization. This riverine nutrient transport causes coastal eutrophication. This study aims to identify cost-effective management options to simultaneously reach environmental targets for river export of nitrogen and phosphorus by the Yangtze River (China) in 2050. A newly developed modelling approach is used that integrates the Model to Assess River Inputs of Nutrients to seAs (MARINA) with a cost-optimization procedure, and accounts for socio-economic developments, land use and climate changes in a spatially explicit way. The environmental targets for river export of nutrients aim to reduce the gap between baseline and desirable nutrient export. Our baseline is based on MARINA projections for future river export of nutrients, while the desirable nutrient export reflects a low eutrophication potential. Results show the possibilities to close the gap in river export of both nutrients by 80–90% at a cost of 1–3 billion $ per year in 2050. Recycling of animal waste on cropland is an important cost-effective option; reducing synthetic fertilizer inputs provides an opportunity to compensate for the additional costs of the recycling and treatment of manure and wastewater. Our study provides new insights on the combination of cost-effective management options for sub-basins of the Yangtze. This can support the design of cost-effective and sub-basin specific management options for reducing future water pollution.

Nutrient pollution

Nutrient Management

Baseline (sea)

10.1016/j.resconrec.2019.104635

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Citations (55)

Using the nexus approach to realise sustainable food systems

Current Opinion in Environmental Sustainability (2024)

Jianjie Zhang Lin Ma Zhaohai Bai Wenqi Ma

10.1016/j.cosust.2024.101427

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Citations (1)

China’s livestock transition: Driving forces, impacts, and consequences

Science Advances (2018)

Zhaohai Bai Wenqi Ma Lin Ma G.L. Velthof Zhibiao Wei

After significant increases in livestock productivity, China now needs to improve efficiency and environmental performance.

Manure management

10.1126/sciadv.aar8534

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Citations (365)

Seasonal River Export of Nitrogen to Guanting and Baiyangdian Lakes in the Hai He Basin

Journal of Geophysical Research Biogeosciences (2021)

Jing Yang Maryna Strokal Carolien Kroeze Xuanjing Chen Zhaohai Bai

Abstract Eutrophication refers to the nutrient enrichment, leading to blooms of algae. Such blooms in lakes can happen throughout the year because of the changes in nutrient and hydrological cycles. Nutrient export to lakes from rivers is the main cause of eutrophication problems. Seasonal trends in nitrogen (N) export by rivers to lakes are still not well understood. The objective of this study is, therefore, to better understand the seasonal trends in river export of dissolved inorganic N (DIN) to lakes of the Hai He Basin. To this end, we selected Guanting and Baiyangdian as representative lakes, whose drainage areas include various cropping systems. We developed a seasonal version of the Model to Assess River Inputs of Nutrients to lAkes (MARINA‐Lakes) model for Guanting and Baiyangdian while assessing N flows from the land to the lakes. The model accounts for the seasonality in human activities (e.g., cropping systems and fertilizer practices), climate, and hydrology. The effective seasons are winter (December–February), spring (March–May), summer (June–August), and fall (September–November). The model results for the year 2012 indicate that river export of DIN was highest in winter and lowest in summer. Point sources accounted for over 50% of DIN exports to Guanting and Baiyangdian across seasons. Avoiding direct discharges of animal manure (point source) in winter is needed to reduce future lake pollution. We argue that effective lake pollution control requires accounting for seasonal N cycles. Our study can support effective nutrient management and environmental policies.

Nutrient pollution

Seasonality

10.1029/2020jg005689

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Citations (15)

Nitrogen budgets of contrasting crop-livestock systems in China

Environmental Pollution (2021)

Xinpeng Jin Nannan Zhang Zhanqing Zhao Zhaohai Bai Lin Ma

10.1016/j.envpol.2021.117633

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Citations (18)

Decline in carbon emission intensity of global agriculture has stagnated recently

Proceedings of the National Academy of Sciences (2024)

Zhaohai Bai Nannan Zhang Wilfried Winiwarter Jiafa Luo Jinfeng Chang

Using global data for around 180 countries and territories and 170 food/feed types primarily derived from FAOSTAT, we have systematically analyzed the changes in greenhouse gas (GHG) emission intensity (GHG i ) (kg CO 2eq per kg protein production) over the past six decades. We found that, with large spatial heterogeneity, emission intensity decreased by nearly two-thirds from 1961 to 2019, predominantly in the earlier years due to agronomic improvement in productivity. However, in the most recent decade, emission intensity has become stagnant, and in a few countries even showed an increase, due to the rapid increase in livestock production and land use changes. The trade of final produced protein between countries has potentially reduced the global GHG i , especially for countries that are net importers with high GHG i , such as many in Africa and South Asia. Overall, a continuous decline of emission intensity in the future relies on countries with higher emission intensity to increase agricultural productivity and minimize land use changes. Countries with lower emission intensity should reduce livestock production and increase the free trade of agricultural products and improve the trade optimality.

Emission intensity

Intensity

10.1073/pnas.2317725121

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Citations (4)

Strategies to reduce ammonia emissions from livestock and their cost-benefit analysis: A case study of Sheyang county

Environmental Pollution (2021)

Haodan Wang Zhanqing Zhao Wilfried Winiwarter Zhaohai Bai Xuan Wang

Baseline (sea)

10.1016/j.envpol.2021.118045

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Citations (14)