Article
Environmental Sciences
Xiaoxiao Han, Jun Xiao, Lingqing Wang, Shuhan Tian, Tao Liang, Yujie Liu
Summary: Soil erosion is a serious eco-environmental issue, closely related to phosphorus loss. The combination of the USLE model and GIS technique is effective in predicting and assessing erosion, providing a scientific basis for reducing soil erosion and controlling phosphorus migration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Xiaoyang Shan, Zhiqiang Zhu, Jiyong Ma, Dinghui Fu, Yanwei Song, Qipei Li, Zanhui Huang, Lixin Pei, Hongwei Zhao
Summary: Water quality modeling is essential for managing nutrient flows and pollution in rivers and seas. This paper reviews the development of seven water quality models, discusses their strengths, weaknesses, and future directions. It also addresses practical problems and summarizes the characteristics of these models in China, including temporal and geographical scales, pollution sources, and the main problems they can solve. Understanding these characteristics can help stakeholders globally select appropriate models for resolving nutrient pollution challenges. Recommendations for model enhancement are also provided.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
R. Elliott Carver, Nathan O. Nelson, Kraig L. Roozeboom, Gerard J. Kluitenberg, Peter J. Tomlinson, Qing Kang, David S. Abel
Summary: Spring injected P fertilizer treatment resulted in less total P and DRP loss compared to fall broadcast treatment, while cover crop use had inconsistent effects on total P loss but consistently reduced sediment loss.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Jeffrey B. Kast, Anna M. Apostel, Margaret M. Kalcic, Rebecca L. Muenich, Awoke Dagnew, Colleen M. Long, Grey Evenson, Jay F. Martin
Summary: Coastal eutrophication is a major global issue affecting water quality. This study highlights the significant contributions of non-point sources, especially inorganic fertilizers, to phosphorus pollution during harmful algal bloom seasons. In addition to manure and inorganic fertilizers, soil sources of phosphorus play an important role in degrading downstream water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Rebecca M. Kreiling, Patrik M. Perner, Kenna J. Breckner, Tanja N. Williamson, Lynn A. Bartsch, James M. Hood, Nathan F. Manning, Laura T. Johnson
Summary: Reducing phosphorus (P) concentrations in aquatic ecosystems is crucial for improving water quality and preventing harmful algal blooms. This study focused on the Maumee River network, a major source of P loads to Lake Erie, to understand the role of rivers in P transport. The researchers found that stream sediment acted as a P sink at most sites, but could become a P source if stream water SRP concentrations decrease. Factors such as agricultural land use and stream size influenced the concentrations of SRP and sediment P saturation, which in turn affected the spatial variation in the zero equilibrium P concentration (EPC0).
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Karen Stainbrook, Cameron Ross, Cassandra Davis, Lauren Townley
Summary: The New York State Department of Environmental Conservation (DEC) has developed the Loading Estimator of Nutrient Sources (LENS) tool to support clean water planning and prioritize waterbodies with excessive phosphorus levels. LENS is an Excel based tool that combines several simple steady state models to estimate phosphorus sources, waterbody response, and recovery potential. Validation comparisons with complex watershed models showed that LENS performs reasonably well in estimating relative phosphorus loading.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Ethan D. Pawlowski, Diana L. Karwan, Randall K. Kolka
Summary: This study uses a user-friendly field-scale tool to model nutrient and sediment export reductions in the Fox River Watershed, Wisconsin, USA. The results show that targeted vegetation implementation can significantly reduce nutrient and sediment exports from agricultural areas. However, further parameter adjustments are needed to improve the accuracy of the model.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Engineering, Environmental
Dongyang Ren, Bernard Engel, Johann Alexander Vera Mercado, Tian Guo, Yaoze Liu, Guanhua Huang
Summary: Identifying key processes and sources of water and nutrient losses is crucial in watershed management. This study used the SWAT model to simulate water and nutrient balance in an agricultural watershed in the U.S. Corn Belt. The results showed that the corn-soybean rotation system was the main contributor to nitrogen and phosphorus inputs and losses, and the non-growing season was identified as the critical period for water and nutrient losses.
Article
Multidisciplinary Sciences
Taylor Maavara, Erica R. Siirila-Woodburn, Fadji Maina, Reed M. Maxwell, James E. Sample, K. Dana Chadwick, Rosemary Carroll, Michelle E. Newcomer, Wenming Dong, Kenneth H. Williams, Carl Steefel, Nicholas J. Bouskill
Summary: There is a growing understanding of the role of bedrock weathering as a nitrogen source in various environmental systems, especially in mountainous regions. However, the relative contributions of rock-derived nitrogen to nitrogen supply in mountainous watersheds are not well understood. The study developed a suite of models to quantify the sources, transformations, and sinks of geogenic and atmospheric nitrogen in a mountain watershed.
Article
Agriculture, Multidisciplinary
Lianhua Liu, Wei Ouyang, Hongbin Liu, Jianqiang Zhu, Xianpeng Fan, Fulin Zhang, Youhua Ma, Jingrui Chen, Fanghua Hao, Zhongmin Lian
Summary: This study evaluated the comprehensive effectiveness of optimizing drainage in the paddy field watershed through field experiments and long-term watershed simulations. Results showed that measures such as increasing the maximum ponding water level in paddy fields and enhancing the roughness coefficient of ditches can effectively reduce diffuse P loss and improve irrigation water efficiency. Potential widespread implementation of these measures could represent a significant step towards sustainable agricultural development and diffuse pollution control in China and other rice planting countries.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Environmental Studies
Yogesh P. Khare, Rajendra Paudel, Ruscena Wiederholt, Anteneh Z. Abiy, Thomas Van Lent, Stephen E. Davis, Younggu Her
Summary: The research indicates that legacy P, inorganic fertilizers, and other sources are important phosphorus contributors in the LOW, while improved pastures, dairies, citrus, and field crops are major TP load contributors. The study underscores the need for accurate spatial mapping of legacy P and its incorporation into modeling efforts for watersheds with legacy P issues.
Article
Environmental Sciences
A. Van Heyst, A. Sinclair, R. Jamieson
Summary: The lakes in southwestern Nova Scotia, Canada are experiencing cultural eutrophication mainly driven by phosphorus inputs from expanding mink farming industry. This study highlights the importance of considering these nutrient sources in watershed management plans to address water quality issues in the region.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Ecology
Sarah C. D'Amario, Henry F. Wilson, Marguerite A. Xenopoulos
Summary: Nutrient concentrations are higher in catchments with greater anthropogenic disturbance, showing seasonal variability and significant thresholds during rising limbs. Different nutrient dynamics were observed for different seasons, with winter and summer showing lower thresholds compared to autumn and greater variability during snowmelt. Strategies to reduce high flows in winter and summer may be the most effective way to mitigate nutrient transport and concentrations.
ECOLOGICAL APPLICATIONS
(2021)
Review
Energy & Fuels
Jaeman Song, Jihye Han, Minwoo Choi, Bong Jae Lee
Summary: This article provides an in-depth review of charge transport models utilized to analyze the performance of near-field thermophotovoltaic (NF-TPV) devices, and a comprehensive examination of NF-TPV experiments performed to date. The article categorizes the analysis models into four categories and compares the results of each model. It also discusses the different approaches used in NF-TPV experiments and the experimental results achieved. Additionally, it introduces advanced concepts for improving NF-TPV performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Environmental Sciences
Jay F. Martin, Margaret M. Kalcic, Noel Aloysius, Anna M. Apostel, Michael R. Brooker, Grey Evenson, Jeffrey B. Kast, Haley Kujawa, Asmita Murumkar, Richard Becker, Chelsie Boles, Remegio Confesor, Awoke Dagnew, Tian Guo, Colleen M. Long, Rebecca L. Muenich, Donald Scavia, Todd Redder, Dale M. Robertson, Yu-Chen Wang
Summary: To reduce harmful algal blooms in Lake Erie, best management practices need to be implemented to decrease nutrient loading from upstream sources. Row crop agriculture dominates the land use in the Western Lake Erie Basin, requiring efforts to mitigate nutrient loads from agricultural systems. Research shows that subsurface placement of phosphorus fertilizers, cover crops, riparian buffers, and wetlands are among the most effective management options.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Faezeh Eslamian, Zhiming Qi, Michael J. Tate, Nikolas Romaniuk
JOURNAL OF SOILS AND SEDIMENTS
(2020)
Review
Agricultural Engineering
Zhe Gu, Zhiming Qi, Rasika Burghate, Shouqi Yuan, Xiyun Jiao, Junzeng Xu
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
(2020)
Article
Environmental Sciences
Faezeh Eslamian, Zhiming Qi, Cheng Qian
Summary: The research evaluated the potential of hydrated lime and lime kiln dust as soil amendments to increase soil P adsorption capacity and reduce dissolved P desorption, finding that both significantly improved the adsorption coefficient in different soil types. Further studies are needed to examine their performance in interactions with crop growth at field scale.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Agronomy
Xiaoping Chen, Shaoyuan Feng, Zhiming Qi, Matthew W. Sima, Fanjiang Zeng, Lanhai Li, Haomiao Cheng, Hao Wu
Summary: This study evaluated the irrigation water use efficiency in cotton production in Northwest China using the Root Zone Water Quality Model. Simulation results showed that the Irr650 treatment achieved the highest cotton seed yield and net income.
Article
Agronomy
Haomiao Cheng, Qilin Yu, Mohmed A. M. Abdalhi, Fan Li, Zhiming Qi, Tengyi Zhu, Wei Cai, Xiaoping Chen, Shaoyuan Feng
Summary: The drip fertigation technique is a modern and efficient irrigation method that can alleviate water scarcity and excess fertilizer in crop production. This study used the Root Zone Water Quality Model (RZWQM2) to assess the effects of different surface drip fertigation (SDF) managements on soil water content, leaf area index, plant height, and maize yield. The results showed that both irrigation and fertilization had multiple effects on water and nitrogen stresses. The calibrated model was also used to explore the optimal SDF scenarios for maximizing yield, water use efficiency (WUE), or nitrogen use efficiency (NUE). The RZWQM2 model proved to be a promising tool for evaluating SDF management and achieving optimal water and nitrogen inputs.
Article
Environmental Sciences
Jiaxin Wang, Zhiming Qi, Elena M. Bennett
Summary: Human activities have had a significant impact on global phosphorus cycling, and the long-term dynamics of phosphorus in Canada have not been well understood. This study quantified the temporal dynamics of phosphorus cycling in Canadian provinces and found that most agricultural regions had phosphorus surpluses, except for Saskatchewan which had deficits. Quebec and the Atlantic provinces had the highest phosphorus surpluses, while Ontario, Manitoba, Alberta, and British Columbia had lower surpluses. Cropland played a more important role in phosphorus cycling than pasture, and the Prairie provinces had the highest phosphorus use efficiency.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Ziwei Li, Zhiming Qi, Ward Smith, Elizabeth Pattey, Budong Qian
Summary: Accurate simulation of thermal and hydrological budgets for farmlands overwinter is crucial in northern climates. This study tested the hypothesis that reduced snow cover due to warmer winters might intensify soil freezing. The results showed that global warming-induced snow cover reduction can lead to increased soil frozen depth, as long as the energy lost through reduced snow cover outweighs the energy gained through warmer air temperature.
WATER RESOURCES RESEARCH
(2022)
Article
Agronomy
Amar Ali Adam Hamad, Qi Wei, Junzeng Xu, Yousef Alhaj Hamoud, Min He, Hiba Shaghaleh, Qi Wei, Xintong Li, Zhiming Qi
Summary: Proper irrigation management can reduce greenhouse gas emissions and ammonia volatilization without reducing crop yield.
Article
Green & Sustainable Science & Technology
Qingguan Wu, Yong He, Zhiming Qi, Qianjing Jiang
Summary: This study conducted a global meta-analysis to explore the effects of drainage on rice yield and greenhouse gas emissions in paddy systems. The results showed that implementing drainage had a minimal impact on yield but significantly reduced CH4 emissions, especially in soils with higher pH and organic carbon content. Extending the duration and increasing the frequency of drainage increased N2O emissions but contributed to a better reduction in CH4 emissions. Implementing drainage in paddy systems with organic amendment achieved greater overall greenhouse gas emissions reduction.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Agronomy
Xu Yang, Ke Zhang, Hiba Shaghaleh, Zhiming Qi, Chao Gao, Tingting Chang, Jie Zhang, Muhammad Zia-ur-Rehman, Yousef Alhaj Hamoud
Summary: Continuous cropping reduces soil organic matter content, clay content, and pH, leading to soil degradation and decreased crop yield in the karst region of southwestern China. Soil water holding capacity is greater in the 40-60 cm layer compared to the 20-40 cm and 0-20 cm layers. Soil water characteristics deteriorate with the prolongation of cropping duration and are positively correlated with soil organic matter content, clay content, and pH. These findings can inform the development of more sustainable cropping systems in similar karst regions.
Article
Agriculture, Multidisciplinary
Jiaxin Wang, Zhiming Qi, Chong Wang
Summary: Phosphorus (P) management is crucial for environmental protection as inappropriate application can cause water pollution. However, conflicting experimental results make it difficult to draw general conclusions, and there is a lack of comprehensive analysis on the impact of P management on crop yields. This study conducted a meta-analysis to assess the effectiveness of different P management practices on reducing soil P loss and their impact on crop yields. The results indicate that the most effective practices for reducing soil P loss may not necessarily lead to the greatest improvement in crop yield. Efficient irrigation, crop straw return, buffer strip, and intercropping were found to be the most effective in reducing soil P loss, while soil amendment, intercropping, and conservative practices showed the largest increase in crop yields.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Lizhu Hou, Xiaojuan Fan, Zhiming Qi, Li Wan, Kelin Hu
Summary: Nitrogen pollution is a serious threat to water resources worldwide, especially in desert oases where the water table is shallow. This study aimed to quantify N leaching for irrigated maize with different fertilizer and irrigation management practices, and recommend the best management practices. The results suggest that a combination of 20 mm irrigation depth and 338 kg N ha-1 fertilization is the most effective management practice.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Ziwei Li, Zhiming Qi, Yuchen Liu, Yunjia Zheng, Yi Yang
Summary: The winter/spring season in cold climate regions is susceptible to nutrient loss and greenhouse gas emissions due to climate change. The RZ-SHAW model effectively describes snow and soil freezing dynamics but is computationally intensive. To reduce simulation runtimes, a parallel high-performance computing framework (RS-DPCF) with multi-threading and multi-processing capabilities was developed. The RS-DPCF program significantly reduced RZ-SHAW calibration time and allowed field-scale simulations of overwintering conditions for multiple croplands across Canada.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Biodiversity Conservation
Jiaxin Wang, Zhiming Qi, Elena M. Bennett
Summary: The utilization of residual soil phosphorus in agricultural soils is important for reducing phosphorus applications and pollution. The potential for using residual soil phosphorus varies among Canadian provinces, with the highest potential in the Atlantic provinces, Quebec, Ontario, and British Columbia.
GLOBAL CHANGE BIOLOGY
(2023)