Article
Environmental Sciences
Huanyao Liu, Cen Meng, Yi Wang, Yuyuan Li, Yong Li, Jinshui Wu
Summary: This study investigated the relationship between integrated landscape patterns and stream water quality in different seasons in ten Chinese subtropical catchments from 2010 to 2017. The study found that nitrogen and phosphorus levels in stream water varied significantly between the fallow season and the rice-growing season, and were influenced by different landscape configuration factors in each season. In the rainy season, stream water nitrogen and phosphorus levels were more likely to be affected by landscape composition, while in the dry fallow season, landscape configuration played a more significant role in determining nitrogen and phosphorus levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
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)
Article
Water Resources
Adam G. Yates, Robert B. Brua, Arthur Friesen, Sharon Reedyk, Glenn Benoy
Summary: The study observed increasing concentrations, loads, and yields of TN, TP, and TSS at most river stations in the eastern half of the Lake Winnipeg Basin, while decreasing or stationary trends were seen in the western stations. Nutrient and suspended solid trends were closely related to discharge patterns, especially in the Red-Assiniboine subdrainage.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Environmental Sciences
Marcelo De Siervi, Silvana Arreghini, Alicia Fabrizio de Iorio
Summary: Rainfall participates in the soil acidification process through hydric erosion and leaching processes. Sediment detachment and transport by runoff water lead to the loss of divalent cations, while leaching processes are responsible for the loss of monovalent ions. Soils with a higher position and slope show more significant losses of sediment, divalent cations, OM, NK, and P Bray. On the other hand, CoAoMo has the lowest sediment, OM, and NK losses due to its high sodium concentration, but it also presents the highest TRP into runoff waters. Sediments are enriched in fine materials, OM, and NK.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Environmental Sciences
Virginia Mosquera, Hjalmar Laudon, Meredith Blackburn, Eliza Maher Hasselquist, Ryan A. Sponseller
Summary: Flow regulates the concentrations of different solutes differently, with organic solutes mainly limited by transport capacity and inorganic solutes mainly limited by their sources. The relationships between solute concentration and flow are influenced by catchment structure, and these changes can affect the concentrations and resource ratios of solutes in streams, with subsequent impacts on aquatic ecological processes.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Danlu Guo, Camille Minaudo, Anna Lintern, Ulrike Bende-Michl, Shuci Liu, Kefeng Zhang, Clement Duvert
Summary: This study examines the effects of baseflow contribution on concentration-discharge (C-Q) relationships in 157 catchments in Australia. The results show that higher baseflow contributions lead to stronger mobilization. This study highlights the importance of flow pathways in determining solute and particulate export processes, and underscores the need for further research on flow variations and baseflow contributions.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Plant Sciences
Jonathan P. Lynch
Summary: Root architecture is a key factor in breeding programs for developing crops with better water and nutrient capture abilities. Different root characteristics can provide adaptability to different environments and cultivation methods, playing an important role in improving crop yields, reducing production costs, and enhancing the ecological environment.
Article
Environmental Sciences
T. Ziehn, Y-P Wang, Y. Huang
Summary: The study reveals that nutrient limitation, particularly nitrogen and phosphorus, significantly impacts land carbon uptake and feedback strength, with vegetation productivity playing a key role in determining feedback strength in all three nutrient configurations.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Ecology
Kyra A. St Pierre, Brian P. Hunt, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Allison A. Oliver, Kenneth P. Lertzman
Summary: Nutrient concentrations in rivers draining coastal watersheds were lower than in nearshore marine environments, suggesting limited importance of freshwater inputs in providing readily available inorganic nutrients. However, these rivers increased the pool of organic-matter-associated nutrients, acting as important sources of potentially limiting nutrients to both nearshore and offshore waters. This study highlights the need for better understanding of nutrient limitation in coastal waters and calls for concerted research efforts to study the spatial and temporal dynamics at the land-ocean interface along the northeast Pacific coast.
Article
Engineering, Environmental
Dongyang Ren, Bernard Engel, Mitchell R. Tuinstra
Summary: The changes in field crop traits due to genetic and agronomic improvements have significant implications for regional water quantity and quality processes. This study conducted a case study in the St. Joseph River Watershed in the U.S. Corn Belt, analyzing the sensitivities of crop traits to various water and nutrient-related factors. The results highlight the importance of considering crop improvements in long-term studies of hydrology and nutrient cycles in agricultural watersheds.
Article
Environmental Sciences
Marc Stutter, Samia Richards, Adekunle Ibiyemi, Helen Watson
Summary: This study aimed to evaluate the spatio-temporal processes within mesoscale catchment rivers to understand internal phosphorus loading mechanisms. The research found that heterogeneous sediment residence within the channel plays a vital role in sediment-water phosphorus exchange, influencing the overall pollution status.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yazhou Wang, Jiawan Mou, Xiaoning Liu, Jianbo Chang
Summary: The study found that higher nutrient concentrations and N/P molar ratio in wastewater led to higher phosphorus recovery, while the initial nutrient concentration had a greater effect on the formation of struvite.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Carolin Winter, Stefanie R. Lutz, Andreas Musolff, Rohini Kumar, Michael Weber, Jan H. Fleckenstein
Summary: Effective measures to reduce nitrate pollution in heterogeneous mesoscale catchments are challenged by a limited understanding of subcatchment contributions and their importance at different time scales. Upstream subcatchments dominate nitrate export during high flow, while downstream areas are a major source of nitrate pollution. Neglecting the disproportional role of upstream subcatchments can lead to an overestimation of the role of agricultural lowlands, posing a long-term threat to water quality.
WATER RESOURCES RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Xiaoyun Wu, Wanling Cai, Yuying Fu, Yaoxing Liu, Xin Ye, Qingrong Qian, Bart van der Bruggen
Summary: Struvite crystallization is a successful technique for simultaneously recovering PO43- and NH4+ from wastewater. The separation and concentration of PO43- and NH4+ are clearly impacted by current density, according to experimental findings. Chemical oxygen demand of the feedwater has no discernible impact on the separation and recovery of ions.
Article
Chemistry, Multidisciplinary
Xiaodan Tang, Zhenghe Li, Shan He, Binghan Yang, Zeyu Zhang, Bing Li, Yuyan Zhao
Summary: This study provides a scientific reference for the investigation and treatment of nitrogen and phosphorus pollution in surface water of typical old industrial cities in China. The results showed that the pollution of nitrogen and phosphorus in the main rivers of Changchun City was serious, and their spatial distribution varied greatly. In terms of time, remarkable results have been achieved in the pollution control of ammonia and phosphorus through government river management efforts.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Mikolaj Piniewski, Sirkka Tattari, Jari Koskiaho, Olle Olsson, Faruk Djodjic, Marek Gielczewski, Pawel Marcinkowski, Marta Ksiezniak, Tomasz Okruszko
Summary: This study used SWAT to simulate the effectiveness of nutrient control measures in three Baltic Sea catchments, finding varying effectiveness of RBMPs measures and suggesting wider adoption of targeted measures in Baltic Sea countries.
Article
Environmental Sciences
Sara Sandstrom, Martyn N. Futter, David W. O'Connell, Emma E. Lannergard, Jelena Rakovic, Katarina Kyllmar, Laurence W. Gill, Faruk Djodjic
Summary: This study examined the seasonal variations in FSS P fractions in three Swedish agricultural headwater catchments over 2 years and found differences in the distribution of P fractions and dominant P fractions in FSS among catchments, likely influenced by factors such as geology, clay content, external P sources, and flow conditions. The study highlights the importance of quantifying P fractions in FSS to better understand the eutrophication risk posed by agricultural sediment losses.
JOURNAL OF ENVIRONMENTAL QUALITY
(2021)
Article
Agriculture, Multidisciplinary
Hannah Wenng, Robert Barneveld, Marianne Bechmann, Hannu Marttila, Tore Krogstad, Eva Skarbovik
Summary: The study aimed to identify dominant sediment runoff processes in cultivated grain-dominated catchments in a cold climate. Assessment of turbidity data, catchment properties, and agricultural management data revealed a clockwise concentration-discharge hysteresis pattern in both catchments, with discharge being the main driver for turbidity. Soil tillage intensity and index of connectivity also impacted the hysteresis index.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Kaisa Vastila, Sari Vaisanen, Jari Koskiaho, Virpi Lehtoranta, Krister Karttunen, Mikko Kuussaari, Juha Jarvela, Kauko Koikkalainen
Summary: Research suggests that TSC design can maintain drainage function over the long-term and lead to greater plant and fish biodiversity compared to conventional dredging. Furthermore, TSC design may enhance water quality by retaining suspended sediment and phosphorus and removing nitrogen.
Article
Water Resources
Hannah Wenng, Danny Croghan, Marianne Bechmann, Hannu Marttila
Summary: This study utilized long-term hydrological monitoring data from small agricultural catchments in Norway to investigate the impact of global warming and land use changes on hydrological regimes. The research found a strong coherence between discharge and precipitation, discharge and snow water equivalent, and discharge and soil water storage capacity.
HYDROLOGY RESEARCH
(2021)
Article
Environmental Sciences
Anatolij Neciporenko, Feliksas Ivanauskas, Jurgita Dabulyte-Bagdonaviciene, Arvydas Povilaitis, Valdas Laurinavicius
Summary: A mathematical model of nitrate removal in woodchip denitrification bioreactor was developed based on field experiment measurements, applying the approach of solving inverse problem for nonlinear system of differential convection-reaction equations to optimize the efficiency. The proposed model can serve as a useful tool for bioreactor design.
JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT
(2022)
Article
Environmental Sciences
Rasa Vismontiene, Arvydas Povilaitis
Summary: The study demonstrated the potential for improving NO3-N removal by incorporating 20% biochar into woodchips. However, the addition of biochar to woodchips can lead to significant releases of PO4-P and other elements, posing potential adverse effects. The use of biochar in woodchip bioreactors is limited and complicated, emphasizing the importance of determining its retention capacity for relevant substances based on feedstock and properties.
Article
Ecology
Svajunas Plunge, Mindaugas Gudas, Arvydas Povilaitis
Summary: The study used the SWAT model to assess the impact of climate change on water flows and nutrient loads in Lithuania. It found that most river water flows are expected to increase, particularly during the winter, due to rising precipitation. Additionally, nitrogen loads are projected to significantly increase due to temperature-driven nutrient mineralization and increased leaching, while sediment transport and phosphorus loads may decrease.
ECOHYDROLOGY & HYDROBIOLOGY
(2022)
Article
Agronomy
Svajunas Plunge, Mindaugas Gudas, Arvydas Povilaitis
Summary: This study evaluated the effectiveness of Best Management Practices (BMPs) for agricultural pollution control in Lithuania in reducing nutrient loads to surface water bodies under climate change. The results showed that grasslands, stubble fields, and winter cover crops were the most effective BMPs, while no-plough farming and reduced fertilization were the least effective. Climate change could increase the potential of reduced fertilization and conversion to grasslands BMPs in reducing nutrient loads. The study also found that BMPs had relatively little effect on crop yield.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Environmental Sciences
Marta Stachowicz, Michael Manton, Marina Abramchuk, Piotr Banaszuk, Leonas Jarasius, Andrzej Kamocki, Arvydas Povilaitis, Amalj Samerkhanova, Achim Schaefer, Jurate Sendzikaite, Wendelin Wichtmann, Nerijus Zableckis, Mateusz Grygoruk
Summary: The study quantifies the benefits of peatland rewetting in the Neman River Basin, showing that rewetting can increase water storage capacity and retention. It is considered technically and economically efficient for sustainable management of agricultural landscapes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Svajunas Plunge, Mindaugas Gudas, Arvydas Povilaitis, Mikolaj Piniewski
Summary: This study evaluated the scale and costs of an optimal set of Best Management Practices (BMPs) for agricultural pollution abatement in Lithuania. The results indicate that the need for BMPs application will increase in the future, and reaching water protection targets will come with high costs. Winter cover crops and reduced fertilization are identified as the most effective and cost-balanced strategies.
ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Serhii Nazarenko, Jurate Kriauciuniene, Diana Sarauskiene, Arvydas Povilaitis
Summary: This study develops a methodology using the standardized water level index (SWLI) to analyze and predict future water levels and discharge by combining the standardized precipitation index (SPI) and streamflow drought index (SDI). The results show that SWLI has good compatibility with SDI and can effectively analyze droughts. It is suggested to correct data for small rivers to better analyze droughts.
Article
Geosciences, Multidisciplinary
Katarina Kyllmar, Marianne Bechmann, Gitte Blicher-Mathiesen, Franziska Katharina Fischer, Jens Folster, Arvo Iital, Ainis Lagzdins, Arvydas Povilaitis, Katri Rankinen
Summary: This study evaluated the spatial and temporal variations in nitrogen (N) and phosphorus (P) concentrations and transport in 34 Nordic-Baltic catchments. The results showed that soil type, water discharge, and crop type were all factors influencing the concentrations and transport of N and P. Tailored mitigation measures are needed to further reduce N and P losses, taking into account soil, climate, geohydrology, and agricultural production. Intensive monitoring of small catchments can provide insights into the relationship between N and P losses and natural conditions and changes in agricultural production.
Article
Green & Sustainable Science & Technology
Solveig L. Johannesdottir, Erik Karrman, Karina Barquet, Jari Koskiaho, Olle Olsson, Marek Gielczewski
Summary: Sustainability assessments in two case-studies in Sweden and Poland revealed differences in sustainability scores for similar technical systems, highlighting the importance of context-specific factors in decision-making processes.
CLEANER ENVIRONMENTAL SYSTEMS
(2021)
Article
Environmental Studies
Marianne E. Bechmann, Frederik Boe
Summary: The study found that subsurface runoff is the main source of soil and nutrient losses in flat areas, and spring ploughing can reduce these losses. Extreme weather events play a crucial role in annual soil and nutrient losses.
Article
Agriculture, Multidisciplinary
Jiarui Zhao, Xiaohu Yuan, Zhanjun Liu, Haotian Shi, Bingnian Zhai, Yuanjun Zhu
Summary: Overfertilization is common in rainfed apple orchards on China's Loess Plateau, but its impacts on soil physicochemical properties in deep soil profiles are poorly understood. This study found that different land-use types showed divergent distribution patterns in soil properties, with low variability for SWC and pH, moderate variability for NH4+-N, AP, and AK, and high variability for SOC, NO3--N, and EC. The results also showed that fertilization influenced soil water content, NO3--N, AP, and AK, and NO3--N played a crucial role in regulating pH and EC. Soil profiles were useful for studying the evolution of soil quality.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Daniel Nyfeler, Olivier Huguenin-Elie, Emmanuel Frossard, Andreas Luscher
Summary: Grass-legume mixtures combine high yields, low fertiliser requirements, and low nitrate leaching better than either pure grass or pure legume swards, both during the intact plant cover and after tilling for the subsequent crop.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Martin Faucher, Seraphine Grellier, Clemence Chaudron, Jean-Louis Janeau, Gabrielle Rudi, Fabrice Vinatier
Summary: The Mediterranean region is expected to experience more intense rainfall events and severe droughts due to climate change, leading to an increase in runoff and erosion rates in agrosystems. Vegetation cover can help reduce erosion and the soil seed bank can provide cost-effective vegetation. This study assessed the effect of vegetation cover on seed loss in vineyards and evaluated the differences in the soil seed bank along a transect. The results suggest that vegetation may not protect interrows from runoff-induced seed loss.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Christian Thierfelder, Blessing Mhlanga, Isaiah Nyagumbo, Kelvin Kalala, Esau Simutowe, Mazvita Chiduwa, Chloe Maclaren, Joao Vasco Silva, Hambulo Ngoma
Summary: The performance of different maize-legume diversification strategies was compared in southern Africa. Intercropping systems showed significant nutritional and economic benefits, but had higher labor requirements compared to other cropping systems. Soil organic carbon content and pH were not affected by the tested cropping systems.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Han Chen, Han Li, Yizhao Wei, Edward Mcbean, Hong Liang, Weimin Wang, Jinhui Jeanne Huang
Summary: This research introduces a hybrid four-sub-deep neural network (HFSD) model for partitioning NEE into GPP and ER. The HFSD employs dual sub-deep neural networks to estimate ERa and ERb and incorporates GPP and environmental variables to predict vegetation transpiration. The results of the model show that the dual sub-DNNs architecture enhances the accuracy of ER simulations, while using EC-derived T as a constraint improves the accuracy of GPP simulations. Correlation analyses suggest that solar radiation and air temperature primarily influence the seasonal variations in GPP and ER, while soil moisture has a strong impact during dry seasons. This study advances the biophysical description of data-driven models for NEE partitioning and enhances the accuracy of GPP and ER estimates.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Michael Glaser, Stefan Dullinger, Dietmar Moser, Johannes Wessely, Milan Chytry, Zdenka Lososova, Irena Axmanova, Christian Berg, Jana Buerger, Serge Buholzer, Fabrizio Buldrini, Alessandro Chiarucci, Swen Follak, Filip Kuezmic, Stefan Meyer, Petr Pysek, Nina Richner, Urban Silc, Siegrid Steinkellner, Alexander Wietzke, Franz Essl
Summary: This study investigated changes in vascular plant species in Central European arable fields and their edges from 1930 to 2019. The results showed a small decline in overall species occupancy, but a more pronounced species turnover. Species with environmental preferences for nutrient-rich sites with neutral pH increased in occupancy, while species typical for arable fields decreased. No response to climate change was observed, and there was a decrease in archaeophytes and native species and an increase in neophytes.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Thomas Abrell, Krishna Naudin, Felix J. J. A. Bianchi, Debora Veiga Aragao, Pablo Tittonell, Marc Corbeels
Summary: This study demonstrates that reducing fallow periods in shifting cultivation systems in the Eastern Amazon region has negative effects on soil fertility and weed pressure, posing a threat to the sustainability and productivity of local farming systems.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Jun Wang, Lu Lv, Ronggui Hu, Haiyang Ma, Bo Liu, Wenju Zhang, Lei Wu
Summary: Nitrification and denitrification are crucial for nitrogen losses in agricultural soils and are affected by soil properties. This study investigated the patterns and controlling factors of nitrification and denitrification potentials in paddy soils in major rice-producing areas of Hubei Province, China. The results showed that soil pH and SOC were the primary factors regulating nitrification and denitrification potentials, respectively.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Olga Fishkis, Jessica Weller, Jorn Lehmhus, Franz Pollinger, Jorn Strassemeyer, Heinz -Josef Koch
Summary: The Farm to Fork strategy of the European Union aims to reduce pesticide use and replace chemical measures with mechanical methods in weed control. However, there is currently no comprehensive evaluation of the ecological and economic parameters of mechanical methods. This study quantified these parameters for different weed control methods in sugar beet and found that no method can be considered fully environmentally friendly.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Mercedes Guerrero-Brotons, Nuria Perujo, Anna M. Romani, Rosa Gomez
Summary: Proper bed substrate selection is crucial for the performance of constructed wetlands, especially when treating drainage water with high nitrogen and low carbon and phosphorus concentrations. In a field-scale pilot plant, adding a carbon-rich substrate such as soil or biochar increased phosphorus availability in beds. Beds with soil displayed higher microbial density and activity, as well as better plant growth compared to gravel. These findings highlight the importance of selecting suitable substrates for treating irrigated agricultural water.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Beatrice Giannetta, Cesar Plaza, Giorgio Galluzzi, Iria Benavente-Ferraces, Juan Carlos Garcia-Gil, Marco Panettieri, Gabriel Gasco, Claudio Zaccone
Summary: This study examines the long-term effects of biochar application on soil organic C protection and finds that biochar, especially when combined with other amendments, has the potential to increase the content of particulate organic C and mineral-associated organic C in soils. The presence of ferrihydrite may mediate the positive effects on mineral-associated organic matter.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Emily Rose Waring, Carl Pederson, Ainis Lagzdins, Chelsea Clifford, Matthew J. Helmers
Summary: Addressing the global problem of eutrophication requires better management of inorganic nitrogen in the agricultural landscape. This study compares the effects of different tillage practices and cover crops on soil and water quality. The results show that the conventional tillage system is more effective in improving water quality and maintaining crop yields compared to other tillage practices. Additionally, the study reveals that the impact of tillage practices and cover crop growth methods on water and soil quality changes over time.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Annalisa Stevenson, Yakun Zhang, Jingyi Huang, Jie Hu, Keith Paustian, Alfred E. Hartemink
Summary: Considerable advances have been made in the assessment and mapping of soil organic carbon stocks. However, the rates of change in carbon stocks are influenced by various factors and need to be quantified. This study found that sandy soils under cultivation and forests have different organic carbon stocks. Factors such as tillage, irrigation, and nitrogen applications contribute to the decline in soil organic carbon stocks. Afforestation of abandoned cultivated fields can increase soil organic carbon, but it is still lower than soils under forest that have never been cultivated.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Zhiyuan Yao, Chuanxiong Huang, Huiling Hu, Tao Wang, Yulong Li, Xiaoming Sune, Sina Adl, Bo Zhu
Summary: Enhancing soil organic carbon levels through improved fertilization strategies is important for soil health and sustainable crop production. This study found that the relative abundance of organisms from higher trophic levels and increased network complexity in the soil micro-food webs are vital contributors to effective SOC accumulation.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Qing Qu, Lei Deng, Zhouping Shangguan, Jian Sun, Jinsheng He, Kaibo Wang, Zhengchao Zhou, Jiwei Li, Josep Penuelas
Summary: Grazing exclusion is a widely implemented strategy for restoring degraded grassland ecosystems and increasing carbon stocks. This study analyzed data from 199 experiments to understand the temporal responses and factors influencing plant and soil carbon stocks following grazing exclusion in different grassland ecosystems. The results showed that plant biomass carbon stocks and soil organic carbon stocks decreased exponentially or rationally with years since enclosure. Grazing exclusion had positive effects on aboveground biomass carbon, but the effects on belowground biomass and soil carbon were influenced by climate, initial carbon levels, and grazing exclusion duration. The response of carbon stocks to grazing exclusion stabilized after approximately 40 years, with soil carbon sequestration showing a lagged pattern compared to plant biomass carbon. The study highlighted the effectiveness of grazing exclusion in regions with low carbon content and non-water limited conditions. However, it might not be an effective measure to increase soil organic carbon stocks in water-limited areas like desert grasslands.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)