Article
Soil Science
Selva Dhandapani, Stephanie Evers, Doreen S. Boyd, Gabriel Yesuf, Lois Kinneen, Alice Haughan, Sofie Sjogersten
Summary: Tropical peat swamp forests play an important role in the climate balance of the earth, but pristine peatlands are almost extinct in Southeast Asia. The peat forest area in Selangor, Peninsular Malaysia shows significant peat subsidence and variability in physicochemical properties and macronutrient contents. The findings indicate continued carbon loss in secondary peat swamp forests through subsidence.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Ryszard Oleszczuk, Andrzej Lachacz, Barbara Kalisz
Summary: This study determined the size of peat subsidence in Solec peatland, Poland over a period of 50 years. The field measurements were compared with estimates using equations. The results showed that chemical processes accounted for 46% of the subsidence while physical processes accounted for 54%.
Article
Environmental Sciences
Robert S. Nichols, Patrick Martin
Summary: This study assessed the biodegradation of terrigenous dissolved organic carbon (tDOC) in Southeast Asia, indicating that phenol oxidase activity assays may be problematic and direct microbial respiration may not be a major pathway for peatland tDOC remineralization. Limited biodegradation of peatland tDOC was observed in experiments, suggesting that photo-oxidation could be a significant factor controlling the fate of carbon in this region.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Meteorology & Atmospheric Sciences
S. Apers, G. J. M. De Lannoy, A. J. Baird, A. R. Cobb, G. C. Dargie, J. Pasquel, A. Gruber, A. Hastie, H. Hidayat, T. Hirano, A. M. Hoyt, A. J. Jovani-Sancho, A. Katimon, A. Kurnain, R. D. Koster, M. Lampela, S. P. P. Mahanama, L. Melling, S. E. Page, R. H. Reichle, M. Taufik, J. Vanderborght, M. Bechtold
Summary: Tropical peatlands are carbon-dense ecosystems and their water storage dynamics have a significant impact on carbon stocks. This study integrated hydrology modules specific to tropical peatlands into a global land surface model. The performance of the model was evaluated using in situ water level and evapotranspiration data, showing overall improvements compared to the default model. However, there were regional differences in performance, likely due to variations in meteorological data accuracy and unaccounted-for peatland hydrologic response.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2022)
Article
Environmental Studies
Ryszard Oleszczuk, Ewelina Zajac, Janusz Urbanski, Jan Jadczyszyn
Summary: The study revealed a significant decrease in the designed depth of drainage ditches in the drained Solec fen-peat area in central Poland over the past 47 years, with medium degree of peat decomposition and varying subsidence rates in different locations.
Article
Green & Sustainable Science & Technology
Slawomir Smolczynski, Barbara Kalisz, Pawel Urbanowicz, Miroslaw Orzechowski
Summary: Siltation reduces the concentration of labile C, N, P, and K in peatlands, inhibiting organic matter mineralization. Ratios such as TOC/TP < 300 and TOC/TN around 8 indicate diminished mineralization of organic matter in peatlands affected by siltation.
Review
Plant Sciences
Adi Kunarso, Mark T. L. Bonner, Ewan W. Blanch, Samantha Grover
Summary: Drainage and conversion of peatlands in Southeast Asia have significant impacts on the environment and properties of peat soils. This systematic literature review and meta-analysis provide insights into the current state of knowledge of peat soil properties in the region, emphasizing the need for standardized methodologies. Significant differences and research gaps are identified, highlighting the importance of further research.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2022)
Article
Marine & Freshwater Biology
Catharine Pschenyckyj, Thomas Donahue, Mary Kelly-Quinn, Connie O'Driscoll, Florence Renou-Wilson
Summary: Currently, 50% of Irish rivers do not meet water quality standards, with many declining due to numerous pressures, including peatland degradation. This study examines the water quality of streams in the Irish midlands, where raised bogs have been heavily disturbed and drained for peat extraction. The results show that degraded bogs have higher levels of pollutants in their small streams compared to near-natural bogs, with elevated levels of total dissolved nitrogen, sulphate, and electrical conductivity. The study highlights the need for management instruments and routine monitoring to improve water quality in the region and protect the valuable peatland ecosystem.
Article
Soil Science
Tim R. Howson, Pippa J. Chapman, Joseph Holden, Nadeem Shah, Russell Anderson
Summary: The recognition of peatlands as a key natural store of terrestrial carbon has led to new initiatives to protect and restore them. However, little is known about the differences in peat properties between intact, afforested, and restored bogs.
SOIL USE AND MANAGEMENT
(2023)
Article
Environmental Sciences
Julie Loisel, Angela Gallego-Sala
Summary: The degradation of peatlands contributes significantly to global carbon dioxide emissions, making the restoration of disturbed and degraded peatlands crucial for climate change mitigation. However, the resilience of restored peatlands to climate change and disturbances is not well-understood. While restoration efforts can achieve net carbon sequestration, the restoration of biodiversity, hydrological regime, and peat soil structure may not be fully achieved, potentially compromising ecosystem resilience to future disturbances.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Forestry
Ari Lauren, Marjo Palviainen, Susan Page, Chris Evans, Inaki Urzainki, Hannu Hokka
Summary: Responsible management of Acacia plantations requires understanding the trade-offs between maintaining stand production and reducing environmental impacts. Intensive drainage leads to increased carbon emissions, peat subsidence, fire risk, and nutrient export, while also enhancing nutrient availability for plant uptake. Dynamic process models can help comprehend the interconnected hydrology, stand growth, carbon and nutrient balance, and peat subsidence, informing production schemes that are environmentally and economically viable.
Article
Environmental Sciences
Liam Krause, Kevin J. McCullough, Evan S. Kane, Randall K. Kolka, Rodney A. Chimner, Erik A. Lilleskov
Summary: Peatlands play a critical role in terrestrial carbon storage but have been degraded due to historic management, leading to loss of ecosystem services. A study in northern Minnesota assessed peat and carbon loss in legacy drainage systems over approximately 100 years, providing estimates and management recommendations based on LiDAR data and site characteristics.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
David Campbell, Georgie L. Glover-Clark, Jordan P. Goodrich, Christopher P. Morcom, Louis A. Schipper, Aaron M. Wall
Summary: The study found that land management practices and water table depths have significant impacts on CO2 emissions on drained peatlands in New Zealand. While CO2 production was similar at both sites when the soil was moist, BD site had significantly higher CO2 emissions during dry periods compared to SD site.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Taryono Darusman, Daniel Murdiyarso, Iswandi Anas
Summary: Through a systematic review and meta-analysis, it was found that rewetting interventions significantly reduced CO2 emissions and increased CH4 emissions, while having no significant impact on dissolved organic carbon (DOC). The effects of rewetting were most evident in temperate zones for both CO2 and CH4 fluxes. Furthermore, the effect of rewetting on CH4 emissions increased significantly over the first 4 years of monitoring. Overall, rewetting interventions showed a decrease in CO2 emissions and an increase in CH4 emissions, with no significant impact on DOC.
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
(2023)
Article
Environmental Sciences
Tung Pham, Markku Yli-Halla, Hannu Marttila, Timo Lotjonen, Maarit Liimatainen, Jarkko Kekkonen, Miika Lapikivi, Bjorn Klove, Erkki Joki-Tokola
Summary: Cultivated peatlands are important for grass production in Northern Europe. However, the potential impact of nutrients leaching to surface waters is a major concern. This study monitored the leaching of nitrogen, phosphorus, and organic carbon from an agricultural peat site in Finland. The results showed that factors such as peat thickness, vegetation cover, and season had a significant influence on nutrient leaching.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)