River Course Research Articles

Paraglacial transformation and ice‐dammed lake dynamics in a high Arctic glacier foreland, Gåsbreen, Svalbard

AbstractThe structural change of the Svalbard landscape from glacially dominated to paraglacial, that has taken place since the termination of the Little Ice Age (ca. 1900) is expressed by the widespread retreat of glaciers and progressive exposure of glacial landforms. This study provides insights into the rate of post‐LIA deglaciation and associated paraglacial transformation in the foreland of Gåsbreen, one of the first ever investigated glacier systems in the Arctic. Glacier is situated in Sørkapp Land (Southern Spitsbergen), a region characterized by one of the fastest deglaciation rates in the entire Svalbard Archipelago. During the investigated period, 1938–2020, the Gåsbreen was in a recession that accelerated after 1990, leading to its foreland increasing from 2.2 to 5.8 km2. The dynamics of landscape change in the glacier foreland, exposed since the end of LIA, manifested in i.e. the formation of ice‐dammed lakes, degradation in the surface of ice‐cored moraines and the landforms that are underlain by dead‐ice. Mass movements and debris flow on ice‐cored moraines and fluvioglacial processes had a great influence on this transformation. Enhanced proglacial runoff intensified denudation, transport and accumulation of sediments, which resulted, in: an increase in the extent of sandurs and proglacial riverbeds, an increase in the area of glacial lakes, extending and changing of the course of rivers in the glacier foreland. At the same time, the major lake system in the area—Goësvatnet underwent several cycles of filling and draining, often through glacial outburst flooding events.

Development of a hyper-avulsive river course during the Holocene on the Himalayan frontal plains

The rivers flowing over the Quaternary foreland plains of the Himalayas embody a history of hyper-avulsiveness. The present study is an attempt to identify a major flow trajectory of the Torsa River and the dynamics of the major flow path during the Holocene. This study is focused on identifying the major distributive system of the Torsa River, active during the Holocene and preceding known historical palaeochannels, using geomorphic and sedimentary archives of the floodplain on the foreland part of the eastern Himalayas. Satellite image processing, sediment analysis from trenches and cores, geochemical and paleocurrent analysis along with the determination of the age of deposits using the Infrared Stimulated Luminescence (IRSL) dating technique were used to identify paleochannels and validate the findings. Moreover, the sequence of channel succession and major avulsion events was also identified from the facies reconstruction and stratigraphy of fluvial depositions. The oscillatory nature of the river is well preserved within the floodplain stratigraphy in the form of lenses of channel deposits intercalated with proximal floodplain depositions. A total of three avulsion events were found between 1.6 ± 0.1 ka and 0.9 ± 0.1 ka where the latest significant channel switching occurred between 1.14 ± 0.1 ka and 0.9 ± 0.1 ka within the distributive system identified in this study and an eastern branch of the fluvial system. The newly identified palaeo-flow trajectory of the system can be utilised for water resource management and the avulsion regime may be useful for understanding future flow oscillations within the river basin.

Geological and geotechnical assessment of natural sands in Ilorin, Nigeria

The quality of the aggregates used inplastering mortar contributes to the properties of the mortar. This study evaluated the suitability of two grades of sand – sharp sand collected along active/old river courses and plastering sand collected from borrow pits – as plastering materials. X-ray diffraction and X-ray fluorescence analysis were used to study their mineralogy and major, minor and trace element components. Grain-size distribution analysis, natural moisture content, specific gravity, Atterberg limits, matric suction and permeability tests were also carried out on the sand samples. In both sands, the silica content was more than 80%. The plastering sand had a higher natural moisture content than the sharp sand. The fineness modulus ranged from 1.31 to 1.83 and 0.53 to 1.01, respectively, for the sharp sand and the plastering sand. The permeability coefficients and matric suction of the sharp sand were larger than those of the plastering sand. This implies that sharp sand will allow easier water passage through its pore spaces, therefore tending to exist in a dryer state than plastering sand. The tested sharp sand may be suitable for plastering because the test results were within the acceptable limits for good plastering materials according to national and international standards.

Recent basement fault reactivation and fluvial drainage modification in an intraplate setting, eastern Bundelkhand Craton, Madhya Pradesh, India

North-central India is underlain by three northeast-trending paleo-topographic ridges of Precambrian Indian basement, bounded by lithospheric-scale basement faults. The Pokhara Fault defines the eastern edge of the Faizabad paleo-topographic ridge, which exposes the Archean Bundelkhand Craton. Near Panna, Madhya Pradesh, the Pokhara Fault coincides with a monocline developed in the Proterozoic Vindhyan Supergroup rocks along the Bundelkhand cratonic margin. Fluvial morphology of basins along the monocline, as well as a deeply incised abandoned meander preserved where the Ken River flows through the monocline, are investigated using longitudinal stream profiles and other geomorphic data along the length of the monocline to assess potential linkages with active basement fault reactivation.Normalized steepness indices in analyzed channel profiles along the monocline increase significantly downstream, with some channels exhibiting convex, over-steepened segments. Normalized steepness indices, knickpoint elevations, and incision depths are on average much higher in streams along the southwest segment of the monocline compared to streams along the northeast segment. Most channel profiles exhibit a knickpoint with slope-break morphology. The obtained longitudinal channel profiles exhibit characteristics of a fluvial system in a transient state subjected to an increase in rock uplift that intensifies to the southwest over a reactivated basement fault. Using previously published relationships between erosion rates and channel steepness, we conservatively estimate the onset age of monocline growth to be Plio-Quaternary. Fluvial geomorphic features preserved near Panna also suggest that the Ken River is an antecedent river. The incised meander feature near the crest of the monocline appears to be the abandoned river valley of a former Ken River course that was orphaned during the evolution of the landscape by what is now the present-day Ken River.Our study supports growing evidence that Indian basement faults such as the Pokhara Fault are long-lived and have recorded multiple periods of reactivation. Recent fluvial modification in the Panna region demonstrates that Indian basement faults are also active on the south side of the Ganga Basin, far south of the Himalayan deformation front, and may be linked to intraplate seismicity and active tectonic modification of the landscape.

The Problem with the Anthropocene: Kainos, Not Anthropos

The Problem with the Anthropocene: <i>Kainos</i>, Not <i>Anthropos</i>

Changes in Mediterranean Coastline According to the Coastal Type and Land Cover under Climate Change: The Case of South-east Spain

Coastline changes were analyzed considering the land cover types and the analysis of the causes that have determined these changes during the past decades. Through the overlapping of aerial photographs and GIS analysis, the results showed that the land surface increased with respect to the previous stage, gaining terrain to the sea, but this increment was caused by anthropogenic processes. In fact, without human pressure, the land surface beside the coastal line would have decreased, especially on the sandy beaches and coastal dunes. Therefore, the beaches are one of the most vulnerable ecosystems and geomorphological systems due to erosion and lack of sediment supply associated with the modified river courses (i.e. by the construction of reservoirs, concrete channeling, etc.), the inner land use changes, and the effects of global warming on the sea level. Climate change studies predict specific increases in the sea level along the coast. The aim of this work is to know if anthropic activity can reverse the effects of sea level rise and coastal erosion. In fact, it has been done for decades with measures aimed to correct impacts and favour economic activity (i.e. maintaining tourism resources) and not from the environmental issues

Long-Term Changes in the Pollution of Warta River Bottom Sediments with Heavy Metals, Poland-Case Study.

Variability in the heavy metal concentrations in aquatic environments may be influenced by a number of factors that may occur naturally or due to anthropopressure. This article presents the risk of contaminating Warta River bottom sediments with heavy metals such as As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, and Zn. Samples collected from 35 sites located along the river course were analysed over the period of 2010-2021. The calculated pollution indices are characterised by significant spatial variability that was additionally subject to changes in subsequent years. The analysis may have also been influenced by individual measurement results that, in extreme cases, may strongly deviate from the concentration values determined in the same site during the remaining years. The highest median concentrations of Cd, Cr, Cu, Hg, and Pb were in samples collected from sites that are surrounded by areas of anthropogenic land use. Samples from adjacent sites to agricultural areas showed the highest median concentrations of Co, Mn, and Ni, and Zn for those adjacent to forest areas. The research results indicate that, when analysing the degree of the risk of contaminating river bottom sediments with heavy metals, it is necessary to take into account long-term variability in metal concentrations. Taking into consideration data from only one year may lead to inappropriate conclusions and hinder planning protective measures.

Fish biodiversity and their conservation measures in the Mathabhanga river, Chuadanga, Bangladesh

The study was concerned to determine the present status of the fish biodiversity in the Mathabhanga river, Chuadanga and its conversation measures based on the questionnaire interview with 40 fishers, focus group discussion with river bank community members and cross check interview with key informants. A field study was conducted for a period of four months from December, 2021 to March, 2022 to assess the fish biodiversity in the Mathabhanga river, investigate the existing fishing practices and also to identify proper management strategies for the conservation of fish biodiversity in the river. The results revealed that three categories of fishers were engaged in the Mathabhanga river namely, professional fishers (45.0%), seasonal fishers (37.5%) and subsistence fishers (17.5%). Shannon-Weaver diversity (H) and Margalef’s richness (D) values revealed that diversity and richness of fish species were the highest in March (H = 2.99, D = 4.45), followed by February (H = 2.96, D = 3.69) and January (H = 2.63, D = 3.15), while the lowest values were obtained in December (H = 2.60, D = 2.80). The Pielou’s evenness (e) values were found to be slightly varied with the variations of total number of species, being the highest in December (e = 0.94) and the lowest in January (e = 0.91). Different types of fishing gears like seine net, gill net, cast net, hook and line, and traps were found to be operated to catch fish by the fishers during this survey. A total of 26 fish species were identified in the catches of the Mathabhanga river. According to the survey, indiscriminate and overexploitation were found to be responsible for almost 40% loss, and pollution and siltation caused about 25% loss of ecosystem. Around 20% and 15% loss of ecosystem were caused by habitat destruction and changes of river course, respectively. As a result, the water quality was deteriorating day by day, and the availability of fish species and other aquatic biodiversity were decreasing gradually. During the survey, almost 16 fish species was found at a risk to be endangered. The specific conservation measures including community based fisheries management, establishment of sanctuary, control of pollution, maintenance of fishing gears and the implementation of fisheries act should need to be made for the sustainable utilization and conversation of fish biodiversity in the Mathabhanga river.

Coseismic river avulsion on surface rupturing faults: Assessing earthquake-induced flood hazard.

Surface-rupturing earthquakes can produce fault displacements that abruptly alter the established course of rivers. Several notable examples of fault rupture-induced river avulsions (FIRAs) have been documented, yet the factors influencing these phenomena have not been examined in detail. Here, we use a recent case study from New Zealand's 2016 Kaikōura earthquake to model the coseismic avulsion of a major braided river subjected to ~7-m vertical and ~4-m horizontal offset. We demonstrate that the salient characteristics of the avulsion can be reproduced with high accuracy by running a simple two-dimensional hydrodynamic model on synthetic (pre-earthquake) and "real" (post-earthquake) deformed lidar datasets. With adequate hydraulic inputs, deterministic and probabilistic hazard models can be precompiled for fault-river intersections to improve multihazard planning. Flood hazard models that ignore present and potential future fault deformation may underestimate the extent, frequency, and severity of inundation following large earthquakes.

Biometrics of neonates and characterization of the Amazon Turtle (Podocmenis expansa) nests in the Crixás-açu river, Mundo Novo, Goiás, Brazil

The objective of this study was to evaluate newborn biometrics and characterization of Podocnemis expansa turtle nests in the Crixás-Açu rivers, municipalities of Mundo Novo, Goais, Brazil. It consists of evaluating the newborns and the characterization of the nests after hatching. There was no statistical difference between eggs with oil, predatory nests, dead newborns, un hatched eggs, shell (total number of eggs counted within a nest), as well as hatching and survival rates for the distance of 30 meters from the river course. Animal weight, hoof length, hoof width, plastron length, plastron width or number of shields were obtained statistically significant considering the same fixed distance of 30 or greater than 30 meters from the river bank. In the eggshell analysis, there was a statistical difference regarding the amount of the element "Carbon" found, unlike the samples of pH, "phosphorus", "potassium", "hydrogen", "aluminium", "calcium", "magnesium" and matter. Organic. As for the particle size analysis of the sand extracted from the nests, there was a statistical difference in two sizes; 1 and 2 millimeters. This study shows that nests near vegetation are more successful in hatching.

Quantification and characterization of PFASs in suspended particulate matter (SPM) of German rivers using EOF, dTOPA, (non-)target HRMS

In this study, we compare analytical methods for PFAS determination–target analysis, non-target screening (NTS), direct total oxidizable precursor assay (dTOPA) and extractable organically bound fluorine (EOF). Therefore, suspended particulate matter (SPM) samples from German rivers at different locations in time series from 2005 to 2020 were analyzed to investigate temporal and spatially resolved trends. In this study 3 PFAS mass balances approaches were utilized: (i) PFAA target vs. PFAS dTOPA, (ii) PFAS target vs. EOF and (iii) PFAS target vs. PFAS dTOPA vs. organofluorines NTS vs. EOF. Mass balance approach (i) revealed high proportions of precursor substances in SPM samples. For the time resolved analysis an increase from 94% (2005) to 97% in 2019 was observable. Also for the spatial resolved analysis precursor proportions were high with >84% at all sampling sites. Mass balance approach (ii) showed that the unidentified EOF (uEOF) fraction increased over time from 82% (2005) to 99% (2019). Furthermore, along the river courses the uEOF increased. In the combined mass balance approach (iii) using 4 different analytical approaches EOF fractions were further unraveled. The EOF pattern was fully explainable at the sampling sites at Saar and Elbe rivers. For the time resolved analysis, an increased proportion of the EOF was now explainable. However, still 27% of the EOF for the time resolved analysis and 25% of the EOF for the spatial resolved analysis remained unknown. Therefore, in a complementary approach, both the EOF and dTOPA reveal unknown gaps in the PFAS mass balance and are valuable contributions to PFAS risk assessment. Further research is needed to identify organofluorines summarized in the EOF parameter.

Plant species diversity in the riparian forests of the Moyar River in southern India

Riparian forests are among the most rapidly disappearing vegetation types throughout the world. River Moyar cascades through gorges and links the Western Ghats with the southernmost segments of the Eastern Ghats. Considering the relatively well-preserved state of the Moyar riparian vegetation and being amongst the least explored forests in southern India, an assessment of angiosperm diversity was undertaken. The study used an array of belt transects along and perpendicular to the river course so that the entire elevation gradient of the gallery could be covered. A total of 172 species representing 126 genera belonging to 47 families, including 100 monotypic genera and 17 monotypic families, were recorded from both the transects in the study area. 131 woody angiosperm species representing 100 genera in 41 families were recorded along the river. The perpendicular gallery transects recorded 111 woody angiosperm species representing 86 genera in 36 families. Thirteen monotypic families were found in both transects, and 70 species were found in both transects. The dominant families with the maximum species were Fabaceae, Rubiaceae and Phyllanthaceae. Shannon diversity index ranged between 2.0 to 3.27 along the river transects and 1.51 to 2.67 along the galleries. The study concludes that Moyar riparian zone merits high conservation value as it supports significant species diversity, including red-listed species and habitat-specific plants, and functions as a vital wildlife corridor in the landscape.

Geological impact on the course of the Great Zab River between (Rizan and its estuary) using geometric Indicators

Geological impact on the course of the Great Zab River between (Rizan and its estuary) using geometric Indicators

Groundwater Assessment using Numerical Flow Model: A Case Study in Gash Sub-Basin-Kassala State, Sudan

The main objective of groundwater modelling in Gash River Sub-basin, is to investigate the effect of hydrologic, hydrogeological parameters and stresses on hydrodynamic behaviour through the implementation of a realistic three-dimensional groundwater flow model. Severe decline of water level due to uncontrollable heavy abstraction, exposes a water scarcity problem especially in summer seasons. The model was developed for four geological layers encompassing two aquifer zones. The improved three-dimensional visual MODFLOW Code was selected, implemented and run using WHS method to solve the finite difference equation using trail-and-error calibration procedure at Kassala Area. The transient model was successfully calibrated with acceptable results of model calibration criteria. The contour maps of the simulated heads were performed as potentiometric surface. The general flow direction of the groundwater is from southeast towards northwest part of the area and from Gash River course towards the east and west directions as detected from gradual decreasing of potential line’s values in those directions, confirming the aquifer recharge from Gash River. The similarity of potentiometric surface contour maps of the two aquifers confirm the aquifers hydraulic interactions. It is found that the increasing pumping rate caused considerable increase in drawdown as detected from pumping rate incremental scenarios. Moreover, incremental pumping rate scenarios also reflected increasing river leakage into the aquifer system due to disturbance of water balance due to water level decline. The components of water budgets were calculated and its percentage was performed for the hydrologic balance. The difference between inflow and outflow of the water balance shows a deficit in most stress periods of the model simulations. Calibration fitness was accomplished at most of the observation wells suggesting that the groundwater model is an accurate representation of the actual historic groundwater system and confirm the validity of the model to forecasting purposes. It was found that the model is more sensitive to hydraulic conductivity and least sensitive to specific yield (Sy). Hence, precaution should be revealed for hydraulic conductivity in forecasting model usage.

Human activity as a factor causing the biomass, structure and seasonal dynamics of phytoplankton in adjacent fishponds

The role of phytoplankton as one of the main sources of energy entering the water food network is especially evident in fish-rearing ponds. Indeed, in these comparatively small ponds (unlike many lakes), variations in the abundance of phytoplankton can be extremely sensitive to the action of external factors, including human activity. Here, we present results of the analysis of the phytoplankton dynamics in adjacent fishponds and in supplying/recipient river courses upstream and downstream of the ponds during a growing season. In the grow-out ponds, phytoplankton biomass is shown to reach maximums in spring and in early autumn, while in the nursery pond, the phytoplankton dynamics is characterized by one long peak. The specificity of fish-rearing ponds as the human-regulated reservoirs clearly manifests itself under comparison of phytoplankton biomass of ponds with the biomass of phytoplankton inhabiting a nearby river. The averaged phytoplankton biomass in the ponds was 6.2–10.1 times higher than in the river. Besides, we show here that the taxonomic composition of phytoplankton in the river differs significantly from the composition of phytoplankton in the fish-rearing ponds. In particular, Cyanobacteria and Chlorophyta were revealed as the major portion of the phytoplankton in the fish-rearing ponds, while in the river their abundances were low.

Five decades of freshwater salinization in the Amu Darya River basin

Study regionThe Amu Darya River (ADR) basin in Central Asia. Study focusTo understand the spatiotemporal patterns and underlying driving mechanisms of river salinization in arid environments, this study gathered 50 years (1970–2019) of water chemistry data from 12 locations along the ADR. The variations in discharge and salinity were assessed by a linear regression model and violin plot. The salinity-discharge relationships were evaluated by a general hyperbolic model and Spearman’s rank correlation coefficient. Random forest models were also constructed to identify the predominant drivers of river water salinization. Finally, a conceptual model of river water salinization was constructed. New hydrological insights for the regionThe water salinity (S) in the upper stream of the ADR was 541–635 mg/L. Salinity showed an increasing trend along the river course, reaching 751–1560 mg/L downstream. In the downstream, the river salinity before the 1990 s (751–1128 mg/L) was slightly lower than that after the 1990 s (983–1560 mg/L). Generally, water salinity was notably correlated with river discharge (Q) in upstream, exhibiting a relationship of S= 17,497Q−0.62, p < 0.05, before the 1990 s. Interannual variation in river salinity is mainly controlled by secondary salinization, and intra-annual variation is controlled by river flow. From upstream to downstream, the controlling salinization process changes from primary salinization to secondary salinization. Specifically, secondary salinization has accelerated due to intensified agricultural activities in recent years.

The technology, management, and culture of water in ancient Iran from prehistoric times to the Islamic Golden Age

Despite Iran’s longstanding reputation for sustainable water management, the country currently faces mounting water-related challenges caused by population growth, industrial development, urban sprawl, lifestyle changes, climate change, territorial conflicts, poor management, and insufficient public participation. Since past and present water-related challenges share similar origins and patterns, addressing the past is imperative. After gathering, contextualizing, verifying, clustering, coding, and corroborating sources, we conducted a historical study to examine the relationship between water and Iranians from prehistoric times to the Islamic Golden Age (1219 AD). According to the findings, in prehistoric Iran, drought, flooding, river course changes, and the absence of a central government severely impacted water development. Despite doubts about the qanat’s origin, archaeological investigations indicate in the proto-historical period, qanat systems existed in Iran and the Arabian Peninsula. In 550 BC, the Achaemenids initiated a fundamental transformation in Iran’s water history by building dams, qanats, and water canals under a centralized administration. After a slump during the Seleucids (312–63 BC) and the Parthians (247 BC–224 AD), Iranians practiced water governance reborn under the Sassanids (224–651 AD). The Sassanids, like the Achaemenids, formed a powerful statement of unity, cooperation, and support among people for implementing their major water-related plans after enhancing institutions, laws, and communications. Chaotic Iran, however, endured severe water-related weaknesses in the Late Sassanids. Throughout the Islamic Golden Age, Iranians successfully traded water knowledge with other nations. As seen today in Iran, the Iranians have been unable to thrive on their resources since the Mongol invasion due to weak water governance, political tensions, and poor public support. The water sectors face more severe challenges when ancient water systems are ignored, applied without enhancement, or blindly adopted from other nations. Therefore, before current problems worsen, it is essential to integrate traditional and modern water cultures, technology, and management techniques.

Les premières occupations humaines dans le Sud du Brésil : une vision géoarchéologique intégrée

Between ≈13,000 and 7000 BP, the territory of southern Brazil was occupied in a stable and diverse manner, with the main anthropic trace being in lithic material. Archaeological research has provided more consistent evidence of occupation in different environments and associated with different stratigraphic formation processes since the Late Pleistocene. Therefore, this paper proposes to analyse the history of the earliest evidence of pre-colonial occupation in southern Brazil from a geoarchaeological point of view, focusing on stratigraphic and chronological data and the process of formation of archaeological layers. Thirty-three stratigraphic sections were analysed from 31 archaeological sites distributed along the Paraná, Uruguay and Atlantic basins. Evidence of archaeological levels was found in different geomorphological contexts: plateau, slopes, valley bottom, alluvial plains and rockshelters. The results indicate that the oldest archaeological levels in the region were formed in the Late Pleistocene, associated with periods of fluvial incision that signal important changes in the southern river systems, characterized by the formation of alluvial and colluvial-alluvial terraces in the valley bottoms. This is followed in the Lower Holocene by widespread colluvial processes in the incised valleys, alluvium in the middle river courses and anthropogenic deposits in the rockshelters that formed the main ancient levels. In the early Middle Holocene, sedimentary deposits containing archaeological material decrease significantly, marking regional changes in lithic industries. The data indicate that there appears to be a threshold between deposition and archaeology in the Early Holocene, characterized by high stratigraphic resolution, where stratigraphic sequences show greater thickness and density of archaeological levels. Finally, the diversity of inter-regional lithic assemblages is clearly highlighted, marked by the predominance of industries on pebbles and blocks, the debitage of flakes and blades as a support for various tools in the interior basins and the shaping of small projectile points on the Atlantic slope.

Metagabbro-Dolerites of the Central Part of the Kara Depression, Nenets Autonomous District, Russia: Influence of an Impact Event and the U–Pb (LA–ICP–MS) Age

The paper presents results of petrographic, geochemical, mineralogical, and isotope-geochronological studies of metagabbro-dolerites of the central part of the Kara Depression, located in the middle course of the Sopcha-Yu River in the Yugorsky Peninsula, Nenets Autonomous District, Russia. Two varieties of metagabbro-dolerites are distinguished: quartz-bearing and quartz-free. The influence of an impact event on rock-forming and accessory minerals is considered. It is proved that the impact event has not modified the isotope system of zircon in the metagabbro-dolerites. The U–Pb (LA-ICP-MS) isotope–geochronological dating of the zircons gives an age of the magmatic minerals within the range of 365.3 to 390.8 Ma, which seems to correspond to the age of the massif. The weighted mean age is 375.5 ± 2.6 Ma and likely corresponds to the age of the Hengur complex.

Application of AI Identification Method and Technology to Boron Isotope Geochemical Process and Provenance Tracing of Water Pollution in River Basins

River water is the most important water source that people can use. Since the 20th century, human influence on river courses has become increasingly serious. The quantitative analysis of water quality is even more difficult. According to the characteristics of Fenhe water chemistry, pollution time and pollution control factors, the contribution rate of people in the polluted water body is not clear. Therefore, this paper aims to use AI identification methods and technologies to study water pollution and provenance tracing. The combination of major elements, trace elements and stable isotopes was used to study the chemical characteristics, water quality status, and sources of pollution of the Fenhe water in the Fenhe area. Because the water contains a large number of pollution sources, it is difficult to find the source using traditional methods. Using correlation analysis, principal component analysis, multi-factor regression analysis, trend analysis and other methods, the macroelements and trace elements in the water body of the Fenhe River were analyzed. The boron sources in the Fenhe river were qualitatively and quantitatively analyzed using mass spectrometry equilibrium equation. Using the boron isotope value of the river, it showed a spatial variation of upstream (+5.1‰) &lt; middlestream (+8.6‰) &lt; downstream (+9.5‰) in dry season, and showed a spatial variation of upstream (+6.1‰) &lt; downstream (+7.2‰) &lt; middlestream (+9.0‰) in the wet season. The contribution of silicate to B is calculated by subtracting the contribution of other resources from the comprehensive contribution rate. It is found that the contribution of silicate is about 38.8%, 22% in dry season and 49.2%, 17% in wet season. The research results have provided a reliable scientific basis for the protection of water resources and pollution control in the Fenhe River Basin. Therefore, the above research confirms the role of AI identification method in the process of boron isotope geochemistry and provenance tracing of water pollution in river basins.