Article
Green & Sustainable Science & Technology
Bo Liu, Xiaofei Zhang, Yi Tong, Wen Ao, Zenglong Wang, Senlin Zhu, Yanping Wang
Summary: This study investigated nutrient contents in water and sediment, sediment nutrient release rates, and their responses to influential factors in Lake Hulun, China. The release of phosphate and ammonia from sediments is greatly influenced by environmental factors such as dissolved oxygen and pH. It was found that these factors, especially pH, had a significant impact on sediment nutrient release and further increased eutrophication in the water column.
Article
Biodiversity Conservation
Xin Mao, Xingqi Liu, Junfeng Li, Shengnan Feng, Gaolei Jiang, Linjing Liu
Summary: Microfossils are important ecological indicators in palaeolimnology, but their reliable interpretation requires a comprehensive understanding of transport processes and whether they are representative of living communities. In Dalongchi Lake, ostracod valves are dominated by Fabaeformiscandona gyirongensis, with distribution and abundance significantly correlated with sampling depth and grain size, suggesting hydrological conditions as the major controlling factor. The population age structure of Fabaeformiscandona gyirongensis varies spatially within the lake, indicating downslope transport may be responsible for these differences.
ECOLOGICAL INDICATORS
(2021)
Article
Ecology
Yongquan Shang, Xiaoyang Wu, Xibao Wang, Huashan Dou, Qinguo Wei, Shengchao Ma, Guolei Sun, Lidong Wang, Weilai Sha, Honghai Zhang
Summary: This study investigated the fungal communities in water and sediment samples from the Hulun Lake Basin in China using high-throughput sequencing. Significant differences were found between the fungal communities of the two sample types. The dominant phyla in the lake were Ascomycota, Basidiomycota, and Chytridiomycota. The structure of the fungal communities was significantly affected by environmental factors, and the dispersal limitations of the fungi also influenced the community structure.
ECOLOGY AND EVOLUTION
(2022)
Article
Geography, Physical
Jingjing Li, Ligang Lv, Rong Wang, Hao Long, Xiangdong Yang
Summary: This study investigates the origin and spatial distribution of n-alkanes in Lake Lugu through analyzing plants, soils, and surface sediments. The findings reveal the presence of both autochthonous (aquatic plants) and allochthonous (terrestrial plants and soils) n-alkanes in the surface sediments. The study also discovers significant spatial heterogeneity and concentrations of n-alkanes in the northwestern part of the lake's north basin, potentially attributed to underwater topography and human-induced soil erosion.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Microbiology
Yujiao Shi, Wenbao Li, Xin Guo
Summary: The composition of bacterial communities in freshwater ecosystems is influenced by various factors, and this study investigated the effects of environmental factors on bacterioplankton communities in a grassland type lake. The results showed that the diversity and heterogeneity of the community decreased, while symbiotic interactions increased in the bottom water layers. Different layers had different symbiotic networks and key species, reflecting their environmental preferences. Tax4Fun analysis revealed that exogenous inputs and endogenous release influenced the relative abundance of genes related to nitrogen metabolism functions. The findings contribute to our understanding of microbial diversity and community formation in grassland lakes.
FRONTIERS IN MICROBIOLOGY
(2023)
Review
Environmental Sciences
Xinyi Cai, Huili Chen, Bei Huang, Jianbo Lu
Summary: China is the largest producer and consumer of plastics globally. Microplastic pollution has become a significant research topic in the field of environmental science and ecology. This study analyzes the statistical data on microplastics in 86 lakes across China's lake ecosystems over the past five years. The results show significant correlations between microplastic abundance and factors such as lake area, GDP, urban waste water discharge, and ratio of agricultural land area. The dominant types of microplastics are transparent fragments, films, and fibers, with sizes mostly smaller than 2 mm and major polymers being PE, PP, and PS. The degree of microplastic pollution in organisms is related to the level of environmental pollution.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Water Resources
Yuqi Huang, Bo Yao, Yu Li, Hao Zhang, Shengrui Wang
Summary: The study focuses on Hulun Lake, the fifth largest lake in China, and investigates the impact of climate change on the decline in water level. Through wavelet analysis and structural equation models, it is found that the increasing potential evapotranspiration caused by warming climate is the main reason for the water level decline in the past 60 years.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Environmental Sciences
Wenlin Wang, Wenjing Li, Mengyong Xue, Xiaomin Gu, Chenghui Ye, Yanwen Jiao, Bo Liu, Yujie Han, Yi Tong, Xiaofei Zhang
Summary: Lakes in cold and arid regions are susceptible to climate change, making the study of their seasonal water chemistry variations crucial for water resource management and environmental preservation. This study used a combination of hydrogeochemical analysis, statistical methods, and spatial interpolation to assess the spatial and temporal variations in lake and groundwater chemistry in Hulun Lake during frozen and non-frozen periods. The findings indicate that sodium (Na+) is the most abundant cation in the area, and bicarbonate (HCO3-) and sulfate (SO42-) dominate the anions in the lake, river, and groundwater throughout the seasons. The research provides insights into the interactions between lakes and groundwater in Hulun Lake, contributing to the sustainable use of water resources and ecological integrity preservation in cold and arid regions.
Article
Biodiversity Conservation
Weizhen Zhang, Ruirui Chen, Fanfan Meng, Haijun Yuan, Mengdie Geng, Longjuan Cheng, Huaqun Yin, Bin Xue, Jianjun Wang
Summary: The study found consistent patterns of microbial community in Lake Hulun with increasing water depth, leading to increased ecosystem functions related to carbon, nitrogen, phosphorus, and sulfur cycling. Ecosystem multifunctionality was mainly influenced by microbial evenness and community composition, rather than species richness. Water depth indirectly affected the relationships between microbial community and ecosystem multifunctionality.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Jiao Guo, Yilong Zhang, Xiaohong Shi, Biao Sun, Lijie Wu, Wei Wang
Summary: In this study, Hulun Lake is investigated as the research object, and the driving forces and cycles of water level and area changes are revealed, and the minimum ecological water demand is determined.
Article
Environmental Sciences
Tong Liu, Dasheng Zhang, Weifeng Yue, Boxin Wang, Litao Huo, Kuo Liu, Bo-Tao Zhang
Summary: In this study, the spatial and temporal distributions, contamination evaluation, and source apportionment of heavy metals in the sediments of Hulun Lake were investigated. The average concentrations of most heavy metals were lower than the background values. The distribution patterns of Cu, Zn, Cr, Cd, and As were similar, with higher concentrations in the southwestern part of the lake. Industrial activities were identified as the primary source of heavy metal pollution. Agricultural activities and natural sources also contributed to the accumulation of heavy metals. The results provide valuable reference data for future studies on heavy metal pollution in sediments of Hulun Lake and other lakes.
Article
Environmental Sciences
Biao Sun, Zhiyan Yang, Shengnan Zhao, Xiaohong Shi, Yu Liu, Guodong Ji, Jussi Huotari
Summary: This research analyzes the dynamic changes in water volume and estimates groundwater recharge in Hulun Lake over the past 60 years. Multiple data sources and methods were used, accurately calculating the contribution of each component. Evaporation loss was the main factor in water loss, while annual runoff had the largest variation range and was the leading factor affecting changes in water quantity. Groundwater recharge was significant, with a ratio of 5:3:2 for river water, groundwater, and precipitation. Climate change and human activities in China and Mongolia, particularly Mongolia, impacted water quantity in Hulun Lake.
Article
Environmental Sciences
Wei Song, A. Yinglan, Yuntao Wang, Baolin Xue
Summary: The fluctuation of lake areas directly impacts the stability of the surrounding ecological environment. Research on the evolution of lake areas and the factors driving these changes play a crucial role in sustainable water resource management. This study focused on Hulun Lake and used remote sensing images from 1986 to 2020 to analyze the long-term changes in lake surface area. By considering natural and anthropogenic factors, the study revealed that human activities were the primary driving force behind the rapid change in Hulun Lake area, explaining 48% of the total change. These findings provide a scientific basis for the development and sustainable management of water resources in the Hulun Lake area.
Article
Environmental Sciences
Jordan L. Evans, Justin N. Murdock, Jason M. Taylor, Richard E. Lizotte
Summary: The study found that water quality and temperature play a key role in sediment nutrient flux in shallow, eutrophic, turbid lakes, while water depth manipulation may be less important for maximizing spring runoff nutrient retention.
Article
Biodiversity Conservation
Rong Wu, Sheng Zhang, Yu Liu, Xiaohong Shi, Shengnan Zhao, Xueer Kang, Dong Quan, Biao Sun, Lauri Arvola, Guohua Li
Summary: This study aimed to assess the water quality of Hulun Lake by applying the improved Water Quality Identification Index (WQI) to data collected from 13 monitoring points from 2012 to 2020. The results showed a deterioration in water quality from 2012 to 2016, but a gradual improvement starting in 2017. The main pollutants affecting water quality shifted from CODcr and TN to CODcr and TP.
ECOLOGICAL INDICATORS
(2023)