Jiechen Wu

• PhD in Industrial Ecology
• Lecturer at KTH Royal Institute of Technology

While food is mainly produced in rural areas, the main drivers of consumption are urban environments. The increasing demand for food in cities leads to an accumulation of phosphorus (P) in urban environments, which affects P flows at multiple scales. This study reviewed recent advances, challenges, and opportunities for sustainable management of P...

Phosphorus (P) is an essential and limiting nutrient for agricultural systems, where the demand for agricultural products such as food, feed, and bio-fuel are the major drivers of the intensification of agricultural production systems. Globally, maize is one of three main cereal crops, a main feedstock for animal production and a substrate for the...

Rapid urbanization has decoupled phosphorus (P) urban consumption and hinterland production, which has accelerated the need for a broader perspective that includes the city and hinterland in managing the P cycle. However, there is a scarcity of frameworks for the combined city and hinterland approach, aimed at quantifying the transboundary P flow b...

Environmental concerns due to the wide use of plastic in food packaging have become one of the most significant challenges in the world. Consequently, the research in developing sustainable materials for food packaging has accelerated. Nanocellulose-based packaging is a biodegradable, renewable, and antimicrobial material with some competitive phys...

Fertilizer use is a major driver of crop yield. However, a comprehensive understanding of how fertilizers impact the nutritional quality of food crops has been lacking so far. In this first global meta-analysis, a large team of scientists compiled 7,859 data pairs from 551 field experiment-based articles published between 1972 and 2022. The goal wa...

Providing the world's population with sufficient and nutritious food through sustainable food systems is a major challenge of the twenty-first century. Fertilizer use is a major driver of crop yield, but a comprehensive synthesis of the effect of fertilizer on the nutritional quality of food crops is lacking. Here we performed a comprehensive globa...

In response to significant shifts in dietary and lifestyle preferences, the global demand for fruits has increased dramatically, especially for apples, which are consumed worldwide. Growing apple orchards of more productive and higher quality with limited land resources is the way forward. Precise planting age identification and yield prediction ar...

Achieving synergy between food security and phosphorus (P) resource sustainability has been a major challenge for sustainable agriculture. However, addressing this challenge by linking region-specific and whole-process P management strategies has not been investigated. In this study, data collected from field experiments throughout China's major ag...

Improvements in economic profit, energy-use efficiency and environmental friendliness are critical for the sustainability of wheat production. The present study was aimed at evaluating the suitability of wheat production shifting conventional flat planting (CFH) and supplemental irrigation (SIH) with water-saving cultivation strategies [straw mulch...

While intensive peach production has expanded rapidly in recent years, few studies have explored the environmental impacts associated with specific regional systems or the optimal management strategies to minimize associated environmental risks. Here, data from a survey of 290 native farmers were used to conduct a life cycle assessment to quantify...

Synergies to achieve high phosphorus (P) use efficiency (PUE) and mitigate greenhouse gas (GHG) emissions are critical for developing strategies aimed toward agricultural green development. However, the potential effects of such synergies in the entire P supply chain through optimizing P management in crop production are poorly understood. In this...

International trade has led to increasing levels of economic development; however, its role in altering the global phosphorus (P) demand and local P footprint (PF) is unclear. Here, through a multi-regional input–output (MRIO) analysis, we quantified the PF associated with the global consumption of agricultural products for 159 countries and 169 cr...

Sustainable phosphorus (P) management presents challenges in crop production and environmental protection; the current understanding of chemical P manufacturing, rock phosphate (RP) mining, P loss within supply chains, and strategies to mitigate loss is incomplete because of a fragmented understanding of P in the crop production supply chain. There...

Intensive self-sufficient forage production is one of the dominant challenges for the boosting intensification of livestock production. However, there is limited information on the economic, energy and environmental consequences of converting conventional crop systems with intensive forage production systems. Based on 4-year field experiments, this...

Sustainable phosphorus (P) management is crucial to both food security and environmental conservation. The optimization of P input from mineral fertilizers has been advocated as an effective approach to improve P use efficiency. However, strategies for maximizing P use efficiency by linking soil–crop systems and fertilizer types with the P flow, fr...

Assessing uncertainties of urban drainage models is important for their applications. While most attention in the literature was paid to large comprehensive models, little has been published about Low-Complexity Conceptual Models (LCCMs). This paper explores the uncertainties inherent to a conceptual, data-based proprietary model StormTac Web, simu...

Appropriate straw and tillage management strategies increase grain yields, and promote atmospheric carbon dioxide (CO2) mitigation through soil organic carbon (SOC) sequestration. However, little is known about economic parameters and carbon footprint (CF, defined as total greenhouse gases emission from the whole life cycle perspective) of intensiv...

Substituting mineral fertilizers with manure has been promoted to enrich soil fertility and maintain field productivity in agricultural production systems. However, there is limited information regarding the effect of substituting mineral-N with manure on eco-efficiency (economic and environmental trade-offs) from a Life Cycle Assessment (LCA) pers...

p>In China, many estuaries suffer from eutrophication problems such as green tides and hypoxia. This is often a result of human activities on land leading to increased nutrient exports by rivers. River pollution shows seasonal trends that are not well understood. Therefore, the main objective of this study is to improve our understanding of the sea...

Urban expansion is a crucial process altering nutrient cycles in agro-ecosystems, often accompanied by negative impacts on the environment. Quantitative analysis of nutrient flows in agricultural systems of megacities and their interactions with urbanization is still lacking. This study reports on changing patterns in inputs, outputs, losses and cy...

Managing nutrient flows to urban lakes is one of the main challenges to environmental sustainability in cities. Considering that future urban and climate changes may increase the challenge of handling future eutrophication, prediction of future nutrient loadings to aquatic environments in urban catchments has become increasingly important. Based on...

Managing anthropogenic emissions in urban areas is a major challenge in sustainable environmental development for cities, and future changes and increasing urbanisation may increase this challenge. Systems perspectives have become increasingly important in helping urban managers understand how different changes may alter future emissions and whethe...

In the cyclic utilization of waste tires, the pricing mechanism is the basic condition for establishing circular economy. The paper proposes a diagram of prcing mechanism according to Chinas present state to standardize and theorize it. The paper analyzes the sections and objects in the diagram, defining three basic sections as a charging chain I,...