Article
Biodiversity Conservation
Man Liu, Guilin Han, Xiaoqiang Li
Summary: The study conducted in the Mun River basin in Thailand selected six soil sites from forest lands and agricultural lands to analyze the impact of agricultural soil erosion on soil nitrogen dynamics. The results showed a significant reduction in soil nitrogen levels due to erosion, but microbial re-assimilation of inorganic nitrogen in deep soils can help mitigate nitrogen loss.
ECOLOGICAL INDICATORS
(2021)
Article
Green & Sustainable Science & Technology
Zhonghe Zhao, Kun Liu, Bowei Yu, Gaohuan Liu, Youxiao Wang, Chunsheng Wu
Summary: This study established quantitative response relationships to analyze the occurrence and transport process of agricultural nonpoint-source pollution (ANPSP). Six regression models were constructed to predict the pollution with consideration of distance attenuation and crop management. The results show that the modeling accuracy significantly increased when these factors were taken into account.
Article
Geosciences, Multidisciplinary
Arika Bridhikitti, Pajanun Ruamchalerm, Mathawut Keereesuwannakul, Thayukorn Prabamroong, Gaohuan Liu, Chong Huang
Summary: This study estimates soil loss and sedimentation rates in the Mun River Basin using long-term sediment loading data, GIS-based Revised Universal Soil Loss Equation (RUSLE) approximation, and sediment core analyses. It found high soil loss and sediment loading rates in the upper basin, with rainfall intensity playing a significant role during extreme rainfall events. Mechanical measures should be adopted in combination with soil-water conservation practices to mitigate the effects in eroding agricultural areas. Sediment core analyses revealed high sediment deposition rates in the middle part of the Mun River Basin, influenced by factors such as dam installation, waterway maintenance, land cover, and flooding. The sediment loading data suggests significant sediment transfer from the lower basin to the Mekong River.
Article
Environmental Studies
Chunsheng Wu, Erfu Dai, Zhonghe Zhao, Youxiao Wang, Gaohuan Liu
Summary: The Mun River Basin in Thailand is a major grain-producing area, where soil quality and indicators show similar spatial distributions. Soil quality is best in the upstream and poorest in the downstream, with dry fields in the west and forests in the east performing better than other areas. However, paddy fields in the middle and east of the basin have poor soil quality due to lack of soil nutrient supply during fallow periods.
Article
Soil Science
Arika Bridhikitti, Thayukorn Prabamroong, Gaohuan Liu, Guo-An Yu
Summary: The study identified the best management measures for addressing nutrient pollution and sediment pollution in different basins of the Mun River. Specific recommendations were provided for each region, including improving crop yield, reducing fertilizer costs, and decreasing soil erosion.
SOIL AND WATER RESEARCH
(2021)
Article
Environmental Sciences
Qian Zhang, Guilin Han, Jie Zeng, Lingqing Wang, Guangyou Zhu, Man Liu, Bin Liang, Rui Qu, Xiaoqiang Li, Shitong Zhang
Summary: Iron (Fe) isotope is a valuable tool in tracking redox and geochemical processes in terrestrial environments. This study investigated Fe concentration and its isotopic composition in Gleysol profiles to understand the factors influencing Fe isotopic variation during redox regimes. The results revealed that Fe(II) was oxidized and precipitated as Fe(III) (hydr)oxides under oxidizing conditions, leading to light Fe isotopes. Dissolution and leaching, as well as accumulation of heavy Fe isotopes, were critical factors in Fe concentration decrease. Soil organic matter induced light Fe accumulation in the topsoil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Shunrong Ma, Guilin Han, Yiyun Yang, Xiaoqiang Li
Summary: Rare earth elements (REE) are emerging pollutants of concern, affected by intensive fertilizer use and waste discharge. This study investigated the dissolved REE in the Mun River in northeast Thailand and found that the elements mainly originated from local rocks and agricultural fertilizers.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Xiao Yang, Bing Guo, Yuefeng Lu, Rui Zhang, Dafu Zhang, Xiaoyan Zhen, Shuting Chen, Hongwei Wu, Cuixia Wei, Luoan Yang, Yi Zhang, Wenqian Zang, Xiangzhi Huang, Guangqiang Sun, Zhen Wang
Summary: This study optimized the RUSLE model by adjusting factors and introduced the gravity center model to analyze the spatial-temporal variation patterns of soil erosion in the Yellow River Basin. The results showed that soil erosion intensity in the basin increased first and then decreased, with the gravity center moving southwestward.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Editorial Material
Agronomy
Yitao Zhang, Pingguo Yang, Jian Liu, Xucheng Zhang, Ying Zhao, Qiang Zhang, Lei Li
Summary: The Yellow River Basin faces challenges in sustainable water management in agriculture, but research shows that practices such as mulching, drip irrigation, and water-nutrient coupling are essential for improving crop production and environmental protection. Further research is needed to understand the efficiency of management practices in different landscapes and changing climates, as well as to analyze system-level linkages between water balance, soil water availability, conservation, water and soil losses, and agricultural and environmental sustainability.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Environmental Sciences
Arika Bridhikitti, Thayukorn Prabamroong, Gaohuan Liu
Summary: This study aims to identify sediment sources in the Mun River basin and discuss possible impacts on ecosystems attributed to exposure to polluted sediment. The findings revealed that the heavy metals in the sediment had not accumulated to levels of concern. Most sediment was from natural sources, while Fe-and Zn-rich sediment was found in the urban watershed, possibly originating from mixed urban sources. Continuous monitoring of toxic compounds in the sediment and focus on mobile forms are recommended for ecological and health risk assessment.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2023)
Article
Engineering, Environmental
Jessica Penny, Priscila B. R. Alves, Yenushi De-Silva, Albert S. Chen, Slobodan Djordjevic, Sangam Shrestha, Mukand Babel
Summary: Despite the growing research and applications of nature-based solutions (NBS), there is a lack of application and quantitative assessment of NBS in South East Asia. This study addresses this gap by using MCDA-GIS analysis to map the potential impact of NBS on flood hazard reduction in the Mun River Basin, Thailand. Wetlands, re/afforestation, and changing crop types were found to be effective strategies for mitigating flood and drought hazards. The results show that implementing NBS in the catchment decreases flood hazard, particularly through reforestation, and even more so when a combination of NBS is applied.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Rui Xue, Chong Wang, Lei Zhao, Baoru Sun, Binglei Wang
Summary: The stability of soil microbial community is crucial for nutrient cycling, soil organic carbon reservoirs, and plant productivity. Agricultural intensification weakens the stability of microbial networks. Soil health index (SHI) plays a key role in shaping the microbial community composition and enhancing microbial network stability.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Environmental Sciences
S. Yu, S. Fan, C. Ti, Y. Ma
Summary: The study simulated that reducing nitrogen use and nitrogen loss in the Yangtze River Basin can be achieved through nitrogen use optimization and improvement in nitrogen use efficiency, with policies and incentives playing a crucial role. Flexibility in adjusting crop-planting structures, especially for cereal crops, is essential to reduce nitrogen use.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Studies
Sisi Li, Huawei Pi
Summary: This study analyzed drought risk in the Mun River Basin using multiple methods, revealing an exacerbation of the arid climate pattern, significant decadal variations in drought intensity, and an increase in drought frequency. Shortened precipitation days and sea surface temperature anomalies caused by ENSO may be underlying causes of drought.
Article
Engineering, Environmental
Yangzhou Xiang, Josep Penuelas, Jordi Sardans, Ying Liu, Bin Yao, Yuan Li
Summary: Microplastics have complex effects on soil inorganic nitrogen, causing a significant reduction in water-extractable nitrate nitrogen concentration but no significant impact on ammonium nitrogen concentration. The effects of microplastics on soil inorganic nitrogen are influenced by microplastics characteristics, experimental conditions, and soil properties.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Agriculture, Multidisciplinary
Man Liu, Guilin Han, Qian Zhang
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2020)
Article
Environmental Sciences
Bin Liang, Guilin Han, Man Liu, Kunhua Yang, Xiaoqiang Li, Jinke Liu
JOURNAL OF COASTAL RESEARCH
(2020)
Article
Environmental Sciences
Rui Qu, Guilin Han, Man Liu, Kunhua Yang, Xiaoqiang Li, Jinke Liu
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Environmental Sciences
Bin Liang, Guilin Han, Jie Zeng, Rui Qu, Man Liu, Jinke Liu
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Environmental Sciences
Man Liu, Guilin Han, Xiaoqiang Li, Shitong Zhang, Wenxiang Zhou, Qian Zhang
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Environmental Sciences
Wenxiang Zhou, Guilin Han, Man Liu, Chao Song, Xiaoqiang Li, Fairda Malem
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2020)
Article
Multidisciplinary Sciences
Man Liu, Guilin Han
Article
Agriculture, Multidisciplinary
Guilin Han, Yang Tang, Man Liu, Lukas Van Zwieten, Xiaomin Yang, Changxun Yu, Hailong Wang, Zhaoliang Song
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2020)
Article
Environmental Sciences
Xiao-Long Liu, Guilin Han, Jie Zeng, Man Liu, Xiao-Qiang Li, Pascal Boeckx
Summary: This study highlighted the importance of identifying nitrate sources and transformations in agricultural watersheds to protect water sources. The study employed chemical and dual isotopic compositions of nitrate to trace sources and processes, estimating the proportional contribution of different nitrate sources. Results showed that NH4+ concentrations were significantly higher than NO3- in certain river sections during the wet season, indicating enhanced runoff processes and fertilized NH4+ leaching. Additionally, manure and sewage were identified as dominant nitrate sources in certain river sections.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Bin Liang, Guilin Han, Jie Zeng, Rui Qu, Man Liu, Jinke Liu
Summary: The study found that red soils in Yunnan province are rich in trace metals such as chromium, arsenic, and zinc, with arsenic and chromium potentially being pollutants. These trace metals are mainly affected by mining activities, leading to slight pollution in the soil due to enrichment of arsenic and chromium. The pollution risk of arsenic and cadmium is higher in southern Yunnan, and arsenic may pose a non-carcinogenic risk to human health.
CLEAN-SOIL AIR WATER
(2021)
Article
Forestry
Guilin Han, Anton Eisenhauer, Jie Zeng, Man Liu
Summary: The study reveals that the distribution of calcium isotopes in the karst forest ecosystem is related to soil depth, with plants preferring lighter calcium isotopes potentially affecting the distribution of calcium isotopes in the soil.
Article
Multidisciplinary Sciences
Man Liu, Guilin Han
Summary: The study revealed that soil nutrients and soil erodibility K factor in the yellow soils were higher than those in the lateritic red soils and red soils, indicating that the distribution of soil nutrients is controlled by soil erosion and soil evolution in the erosion region of Southeast China.
Article
Chemistry, Multidisciplinary
Kunhua Yang, Guilin Han, Jie Zeng, Man Liu, Xiaoqiang Li, Ye Zhao
Summary: The study on the Fe isotopic composition of riverine suspended particulate matter in the Mun River improves understanding of Fe isotope behaviors in the surface environment and highlights the significance of investigating the Fe isotopic compositions of riverine SPM. The research confirms the essential role of weathering types and intensities in regulating Fe isotopic fractionation, and also shows the important contribution of anthropogenic Fe to riverine particulate matter.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Environmental Sciences
Xuhuan Xiao, Guilin Han, Jie Zeng, Man Liu, Xiaoqiang Li
Summary: This study analyzed the concentrations and characteristics of dissolved iron isotopes in the Mun River, revealing that the seasonal variation and dissolved organic carbon are key factors influencing the iron isotope concentrations in the river. Additionally, different sources contribute to the distinct characteristics of iron isotopes in the river water.