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1.
P. K. Govil J. E. Sorlie D. Sujatha A. K. Krishna N. N. Murthy K. Rama Mohan 《Environmental Earth Sciences》2012,66(1):121-128
Spatial distribution and temporal trends studies were carried out at Katedan Industrial Development Area (KIDA) near Hyderabad,
capital of Andhra Pradesh state, India under Indo-Norwegian Institutional Cooperation Program, to find out the extent of contamination
in streams and lake sediments from the discharge of industrial effluents. Stream and lake sediment samples were collected
from the five lakes in the study area and connecting water streams. The samples were analyzed by XRF spectrometer for toxic
elements. The studies reveal that the stream sediments with in the KIDA and the impounded Noor Mohammed Lake down stream have
high concentration of some of the toxic elements like chromium, nickel, lead, arsenic, zinc etc. The geology of the area indicates
that the study area consists of residual soil of acidic rocks, which are predominantly of Archaean gneisses and granites having
low to medium concentrations of chromium and nickel. The source of these high concentration of elements like lead 2,300 mg/kg,
copper 1,500 mg/kg, arsenic 500 mg/kg, chromium 500 mg/kg etc. cannot be derived from the surrounding acidic rocks and may
be attributed to the industrial effluents released in the ditches and random dumping of hazardous solid waste. It was observed
that the metal concentrations increased in the streams during the dry season (pre-monsoon period). After the monsoon rains,
the metal concentrations in the streams were reduced by half which may be due to dilution. The eroded sediments are deposited
in the lake where very high concentrations were encountered. Overflowing of the lake will spread the contamination further
downstream. The lake sediments will remain as a major source of contamination by desorption to the water phase regardless
of what happens to the effluent discharge in the KIDA. However, some samples showed enrichment of lead, arsenic and nickel
during post-monsoon, which were collected near the dumpsite due to the leaching of toxic elements from the dump site to the
lakes. Some of the toxic elements like nickel and copper have not shown any dilution but have increased after the rains, which
could be due to the leaching of arsenic from the dumpsite to the lake along with rainwater. Geochemical maps showing the distribution
of heavy/trace elements in streams and lakes are prepared and presented in this paper. Effect of toxic elements on the health
of the residents in the surrounding residential areas is also discussed. 相似文献
2.
黑龙江省柳树河盆地始新统八虎力组发育多层油页岩。通过对油页岩样品元素地球化学分析测试,研究了其常量元素、微量元素和稀土元素特征,分析了油页岩沉积环境。研究结果表明,常量元素以富Al2O3、Fe和CaO,贫SiO2、MgO、Na2O和K2O为特征,微量元素总体上表现出不同程度的亏损特征,稀土元素总量平均为140.7×10-6,表现出轻稀土元素轻度富集特征。稀土元素具有较为一致的变化趋势,表明油页岩沉积时物源和沉积环境较为稳定。Mn/Ti值表明油页岩组成物质的搬运距离随着时间变化经历了远→近→远的变化,反映水体深度经历了深→浅→深的变化。Sr/Cu值和Rb/Sr值表明油页岩沉积时为相对炎热干旱的环境。Sr/Ba值反映当时为炎热干旱气候条件下的过渡相咸水湖泊沉积环境。V/(V+Ni)值、δEu和有机碳含量表明油页岩沉积时处于缺氧的还原沉积环境中。总体上,柳树河盆地油页岩发育于炎热干旱气候、咸水、缺氧条件下的湖泊沉积环境中。 相似文献
3.
内蒙古扎鲁特地区上二叠统林西组古盐度分析 总被引：1，自引：0，他引：1
通过对扎鲁特地区陶海营子剖面和鲁D2井泥岩样品中微量、常量元素和黏土矿物的测定,利用Adams和Couch古盐度计算公式及Walker相当硼判定法、锶钡比值法、硼镓比值法、生物标记化合物等方法,综合分析了扎鲁特地区林西组沉积时水体的古盐度特征.结果表明,鲁D2井林西组沉积时为半咸水环境,陶海营子剖面林西组则为淡水环境,扎鲁特地区林西组沉积时期水体环境有一个逐渐淡化的过程,下部为半咸水的湖泊环境,上部逐渐演化为淡水湖泊环境.半咸化的湖水环境为林西组巨厚层烃源岩的发育提供了有利条件. 相似文献
4.
Lake Houston is a man-made reservoir located northeast of Houston, Texas. The purpose of this investigation was to document
suspended sediment transport, sedimentation, and resuspension in the lake with a view towards estimating the influence of
sedimentation on water quality. Sediment traps were placed in strategic locations in the lake to collect suspended sediments.
Samples were analyzed for bulk density, grain size, organic carbon, and a number of trace elements. These data were analyzed
along with meteorological data to examine those factors which regulate suspended sediment input and dispersal, and the role
of suspended sediments in controlling water quality within the lake.
Sediment input to the lake depends primarily on the intensity of rainfall in the watershed. Sediment movement within the lake
is strongly influenced by wave activity, which resuspends sediments from shallow areas, and by wind-driven circulation. The
increased residence time of suspended sediments due to resuspension allows greater decomposition of organic matter and the
release of several trace elements from sediments to the water column.
Virtually all samples from sediment traps suspended between 1 and 5 m above the lake bottom contain medium to coarse silt,
and even some very fine sand-sized material. This implies that circulation in Lake Houston is periodically intense enough
to transport this size material in suspension. During winter, northerly winds with sustained velocities of greater than 5
m/sec provide the most suitable condition for rapid (<1 d) transport of suspended sediment down the length of the lake.
Fluctuations in current velocities and the subsequent suspension/deposition of particles may explain variations in the abundance
of coliform bacteria in Lake Houston. 相似文献
5.
A strong He-U anomaly, discovered in the Thelon basin of the N.W.T. during a regional U exploration program in 1981, was studied in detail in 1982. The anomaly is confined to a 3-km2 lake situated 160 km northwest of Baker Lake. Lake bottom water and sediment samples taken in June through the ice on a 50 m × 50 m grid, were analyzed for a number of trace and minor elements.In the lake sediments He and U were highly anomalous and parallel the strong anomaly patterns of He observed in the water. Median and maximum values in the sediments were 57 ppm and 396 ppm U, and 296 nL/L and 13870 nL/L He. Regional medians were 4.3 ppm U and 50 nL/L He. Se and V in sediments gave weak but similar anomaly patterns to those observed for U and He.The anomaly is somewhat of an enigma. The unusually high U content indicates an oxidizing, hence, near surface, water regime, and the highly anomalous He flux into the lake and a thick cover of permafrost in the region indicate a very deep source where conditions are normally reducing, rendering U immobile.Coincident anomaly patterns and increasing concentrations with depth of minor and trace elements and gases in the lake water prove that groundwater is the source of the anomalies. Contoured element maps indicate that this groundwater enters the lake in at least four places.The fact that up to 35 ppb U, 6 ppm dissolved O2 and virtually no Fe and Mn, were detected in lake waters above groundwater entry points indicates that the groundwaters were oxidizing with respect to these elements. This is indeed surprising because permafrost is believed to be about 300 m thick in the region; at such depths groundwaters are usually rich in Fe and void of U.The highly anomalous He in this lake indicates deep fractures which serve as conduits for mineralized water entering the lake from depth and creating a frost-free window in the permafrost. The fractures probably penetrate well into the basement for only major deep fractures are known to produce such strong He anomalies. The additional presence of anomalous U suggests U mineralization at depth. 相似文献
6.
《Applied Geochemistry》2005,20(11):2116-2137
Samples of mine water from Butte, Montana were collected for paired geochemical and stable isotopic analysis. The samples included two sets of depth profiles from the acidic Berkeley pit lake, deep groundwater from several mine shafts in the adjacent flooded underground mine workings, and the acidic Horseshoe Bend Spring. Beginning in July-2000, the spring was a major surface water input into the Berkeley pit lake. Vertical trends in major ions and heavy metals in the pit lake show major changes across a chemocline at 10–20 m depth. The chemocline most likely represents the boundary between pre-2000 and post-2000 lake water, with lower salinity, modified Horseshoe Bend Spring water on top of higher salinity lake water below. Based on stable isotope results, the deep pit lake has lost approximately 12% of its initial water to evaporation, while the shallow lake is up to 25% evaporated. The stable isotopic composition of SO4 in the pit lake is similar to that of Horseshoe Bend Spring, but differs markedly from SO4 in the surrounding flooded mine shafts. The latter is heavier in both δ34S and δ18O, which may be due to dissolution of hypogene SO4 minerals (anhydrite, gypsum, barite) in the ore deposit. The isotopic and geochemical evidence suggests that much of the SO4 and dissolved heavy metals in the deep Berkeley pit lake were generated in situ, either by leaching of soluble salts from the weathered pit walls as the lake waters rose, or by subaqueous oxidation of pyrite on the submerged mine walls by dissolved Fe(III). Laboratory experiments were performed to contrast the isotopic composition of SO4 formed by aerobic leaching of weathered wallrock vs. SO4 from anaerobic pyrite oxidation. The results suggest that both processes were likely important in the evolution of the Berkeley pit lake. 相似文献
7.
The water chemistry of Pichola lake revealed that it is dominated by Na and HCO3. The lake water chemistry strongly reflects the dominance of continental weathering aided by anthropogenic activity, such as tourist influx, developmental activities in the catchment area, and disposal of untreated municipal and domestic sewage into the lake basin. The supply of major ions is mainly through weathering of the silicate rock exposed in the drainage basin and the contribution from saline and alkaline soils/groundwater because of the semiarid conditions of the region. The increase in phosphate loading and consequent depletion of silica suggests biological consumption of the latter. The observed chemical data of Pichola lake was used to predict the mineral assemblages in the carbonate and aluminosilicate system. It demonstrates that calcite and dolomite are the possible minerals that are in equilibrium with the lake water system and that the lake water chemistry is in the range of stability of kaolinite. 相似文献
8.
This paper presents a study on Manasbal lake, which is one of the high altitude lakes in the Kashmir Valley, India. Eighteen
water samples were analysed for major ions and trace elements to assess the variability of water quality of the lake for various
purposes. Geostatistics, the theory of regionalized variables, was then used to enhance the dataset and estimate some missing
spatial values. Results indicated that the concentration of major ions in the water samples in winter was higher than in summer.
The scatter diagrams suggested the dominance of alkaline earths over the alkali elements. Three types of water were identified
in the lake that are referred to as Ca–HCO3, Mg–HCO3 and hybrid types. The lake water was found to be controlled by rock–water interaction with carbonate lithology as a dominant
source of the solutes. The major (Ca2 + , Mg2 + , Na + , K + , NO3 and HCO3-{\rm{HCO}}_{3}^{-}, CO3 and Cl) and trace elements of the lake water were within the World Health Organization standards, therefore the lake water
was considered chemically safe for drinking purposes. Although NO3 concentration (ranging from 1.72 to 2 mg/L), is within the permissible limit and not very alarming, the gradually increasing
trend is not acceptable. It is however, important to guard its spatio-temporal variability as the water is used for domestic
as well as agricultural purposes. This study is significant as hydrogeological information on such high altitude lakes in
India is scanty. 相似文献
9.
10.
浅谈湖泊沉积环境演变中元素地球化学的应用及原理 总被引：1，自引：0，他引：1
湖泊沉积物中某些元素的含量、比值及分布特征在区域气候与环境变化方面的应用研究发展迅速.介绍了常量元素的含量及其比值分析,有机质中特征元素含量及比值分析,同位素分布特征,稀土元素模式分析几个方法.利用常量元素和有机质特征元素的含量及比值的升高或降低来指示沉积时期湖泊流域温度、降水量等气候变化并建立湖泊演变的气候干湿波动曲线,也可以获得沉积时期元素迁移变化的过程;利用同位素分布特征和稀土元素模式分析来测定沉积速率和建立演化年序,也可以判断湖泊演化过程和水源补给条件等. 相似文献
11.
Evaluation of environmental status and geochemical assessment of sediments,Manasbal Lake,Kashmir, India 总被引：1，自引：1，他引：0
The present study was conducted on the Manasbal Lake (34°14′N: 74°40′E) to assess the geochemical characteristics of the lake bottom sediments, its environmental implications and its response in the local catchment area. This study tracks the spatial distribution of grain size, geochemical analysis, C/N ratio, calcium carbonate (CaCO3) and organic matter (OM) of the lake bottom sediments. It is observed that the clay fraction (49.79%) is predominant in the lake bottom sediments, followed by silt (35.88%) and sand (14.33%) and its spatial distribution is controlled by water depth. Geochemistry and normalized diagrams for the major oxides and trace elements reveal enrichment of CaO, K2O, P2O5, S, Cl, Ni, Zn and Sr. Chemical index of alteration (CIA) reflects low to moderate weathering intensity and near compositional similarity with the bedrock exposed in the catchment area around the lake. Environmental indices (EF, Igeo) suggest that the sediments are enriched in Cu, Ni, Zn, Cr, Co, Pb followed by Mn content. Pollution load index (PLI) reveal that all the sampling sites reflect low to moderately polluted category except for few stations that are towards the southern and southeastern side of the lake. OM (16.85%), CaCO3 (14.04%) and C/N ratio (15.5) of the lake bottom sediments is attributed to high organic activity within the lake, shell fragments, contributions from the lake flora and fauna adhering to the clayey silty sediments. The C/N ratio of 15.5 suggests a mixed source of organic matter both terrestrially and in situ formation within the lake. Sulphur and chlorine are high amongst the trace elements suggesting anthropogenic detritus input into the lake and this is due to the chemical fertilizers from the agricultural runoff and organic load into the lake. Thus, the present study suggests that in order to preserve the pristine lake ecology and the environment; continued monitoring and restoration efforts need to be undertaken. 相似文献
12.
This paper describes recent proglacial lacustrine sediments exposed by the drainage of a small (probably never more than 0·03 km2) ice-dammed lake basin at Leirbreen, central Jotunheimen, Norway. The dominant facies include ripple-laminated, massive and horizontally-stratified sands, massive and horizontally-laminated silts, and irregularly-laminated fine sands and silts. The major control on lake circulation and the nature and distribution of these facies was an underflow driven by a subglacial meltwater stream which formed the major lake input. Although much of the sedimentary sequence indicates a pulsatory input, the proximal character of this small lake prevented the development of classic varved silts. Compressional deformation of shoreline sediments was due to winter lake ice push. Other deformational processes included the grounding of icebergs, water escape and syn-sedimentary downslope collapse. Observations from an adjacent small ice-marginal lake at Leirbreen provide support for several of the inferences drawn from the sediments of the former ice-dammed lake. 相似文献
13.
巴里坤盐湖卤水主要为湖表卤水，矿化度为２１５～２６３ｇ／Ｌ，最高可达３８１ｇ／Ｌ。水中富含Ｎａ＋，Ｋ＋，Ｃａ２＋，Ｍｇ２＋及Ｃｌ－，，等多种化学成分。以上阴、阳离子总和占卤水总含盐量的９９．６％。除主要成分外，还赋存有多种微量元素，其中硼、锂、溴、碘合量较高，是盐湖卤水的特征组分。这些微量元素的分布特征生要受湖盆构造、补给水、气候条件及元素本身的地球化学性质所控制。 相似文献
14.
The picturesque Nainital Lake, in the Uttarakhand state of India, is one of the major tourist attractions in the northern
part of India. The increasing tourism and population around these lakes are a major concern for the ecology and good sustenance
of the lakes. The present study is aimed to understand the behaviour of nutrients and metals in the sediment and their association
with chemical forms in the lake. The study was accomplished by studying the water, interstitial water and sediments for major
oxides, nutrients and metals in the lake. The different chemical forms of phosphorus and metals in the sediments were done
using sequential extraction procedures. The water chemistry (Ca + Mg:Na + K) and the sediment chemistry (CIA and Al2O3/K2O) show that the rocks in the catchment area play an important role in the geochemistry of the lake. The metals in the water
also show that the Tallital basin is more polluted than the Mallital basin, may be due to the influence of Bus station. The
high concentration of chloride, NH4, SO4 and metals in the sediment water interface and the interstitial water shows denitrification, sulfidisation and sulfide oxidation
in the anoxic bottom water. The sediment composition shows that the phosphorus in the water is sequestered as carbonate flour
apatite, and the metals precipitate as carbonate. The geo- accumulation index shows that the metals zinc, cobalt and nickel
show moderate polluted nature than other metals. In general, the lake is less affected by anthropogenic activities. The chemical
processes undergoing within the lake, like sulfidisation and sulfide oxidation, oxide dissolution and denitrification and
organic matter degradation play an important role in the remobilization of the metals from the lake sediments. 相似文献
15.
不同水域鲤鱼耳石微化学特征及其环境指示意义 总被引：6，自引：0，他引：6
利用中子活化分析对密云水库与白洋淀水域两个不同水域（无污染水域和重污染水域）中鲤鱼耳石的微量元素进行分析，发现白洋淀鲤鱼耳石中Sr、Zn、As、Au、Ba、K、Na的含量明显比密云水库鲤鱼耳石的相应元素含量高。采用线性判别方法对两地耳石中Sr、Zn、As、Ba4种元素进行分析，表明存在明显的分组差异，而且两地的差别主要在于Sr含量不同，其次是Zn、As和Ba；白洋淀鲤鱼耳石中As、Ba、Sr、Na等元素含量变化幅度比密云水库鲤鱼耳石中相应元素含量的变化幅度大，与白洋淀水域废水排放时间上的周期性和短暂性导致元素在耳石部分日轮上沉淀等因素相吻合。两地鲤鱼耳石微量元素特征存在截然的区别，与两地水域水体中微量元素差异相一致，表明鲤鱼耳石微化学特征具有水化学环境指示意义，为进一步研究利用鲤鱼耳石进行水化学环境监测或恢复鲤鱼生长期水环境特征奠定了基础。 相似文献
16.
《Chemie der Erde / Geochemistry》2019,79(1):162-177
The non-marine Qaidam Basin is a petroliferous basin in northwest China. The Tuanyushan area is located in the Saishiteng Depression in the northern Qaidam Basin. Coal and oil shales are widely developed in the Middle Jurassic Dameigou and Shimengou formations in this area where the sedimentary sequence and controls on coal accumulation have already been well documented. However, the geochemical characteristics of lacustrine fine-grained sediments, including lacustrine oil shales, in the shale member of the Shimengou Formation and the main controlling factors of the formation of the oil shales are ambiguous. This paper aims to reconstruct the lake evolution history during the Middle Jurassic period and reveal its influence on the formation of the oil shales in this area. Oil shales and fine-grained sediments were systematically sampled to determine their mineralogical and geochemical characteristics (major, trace and rare earth elements; stable carbon and oxygen isotopes). Based on lithological variations and total organic carbon (TOC) contents, a complete third-order sequence is identified and can be further divided into four system tracts (lowstand system tract, LST; transgressive system tract, TST; highstand system tract, HST and regressive system tract, RST) that correspond to four lake evolution stages (A–D). Changes in the lake level show an initial shallow lake, followed by a continuous upward deepening trend, followed by a shallowing trend. Shallow lake facies developed in the LST, TST and RST, whereas semi-deep to deep lake facies developed in the HST. Stable carbon and oxygen isotopes indicate that the Shimengou Lake was semi-closed to closed in the Middle Jurassic. Therefore, the water properties responded strongly to climate changes. According to elemental and mineralogical analyses, a moist climate prevailed, except during the early stages of the TST (stage B1) and HST (stage C1) when there was a semiarid climate. The semiarid climate influenced the water properties and detrital input and was the major controlling factor for the formation of the higher quality oil shales within a saline water environment. In comparison, under the moist climatic condition in the HST, the stable semi-deep to deep-water environment was the major controlling factor for the formation of lower quality oil shales within a fresh water environment. 相似文献
17.
Saline, 450-m-deep Lake Van (Eastern Anatolia, Turkey) is, with 576 km3, the third largest closed lake on Earth and its largest soda lake. In 1989 and 1990, we investigated the hydrochemistry of the lake’s water column and of the tributary rivers. We also cored the Postglacial sediment column at various water depths. The sediment is varved throughout, allowing precise dating back to ca. 15 ka BP. Furthermore, lake terrace sediments provided a 606-year-long floating chronology of the Glacial high-stand of the lake dating to 21 cal. ka BP. The sediments were investigated for their general mineralogical composition, important geochemical parameters, and pore water chemistry as well. These data allow reconstructing the history of the lake level that has seen several regressions and transgressions since the high-stand at the end of the Last Glacial Maximum. Today, the lake is very alkaline, highly supersaturated with Ca-carbonate and has a salt content of about 22 g kg?1. In summer, the warmer epilimnion is diluted with river water and forms a stable surface layer. Depth of winter mixing differs from year to year but during time of investigation the lake was oxygenated down to its bottom. In general, the lake is characterized by an Na–CO3–Cl–(SO4)-chemistry that evolved from the continuous loss of calcium as carbonate and magnesium in the form of Mg-silica-rich mineral phases. The Mg cycle is closely related to that of silica which in turn is governed by the production and dissolution of diatoms as the dominant phytoplankton species in Lake Van. In addition to Ca and Mg, a mass balance approach based on the recent lake chemistry and river influx suggests a fractional loss of potassium, sodium, sulfur, and carbon in comparison to chloride in the compositional history of Lake Van. Within the last 3 ka, minor lake level changes seem to control the frequency of deep water renewal, the depth of stratification, and the redox state of the hypolimnion. Former major regressions are marked by Mg-carbonate occurrences in the otherwise Ca-carbonate dominated sediment record. Pore water data suggest that, subsequent to the major regression culminating at 10.7 ka BP, a brine layer formed in the deep basin that existed for about 7 ka. Final overturn of the lake, triggered by the last major regression starting at about 3.5 ka BP, may partly account for the relative depletion in sulfur and carbon due to rapid loss of accumulated gases. An even stronger desiccation phase is proposed for the time span between about 20 and 15 ka BP following the LGM, during which major salts could have been lost by precipitation of Na-carbonates and Na-sulfates. 相似文献
18.
Anja Stojanovic Daniel Kogelnig Dieter Mader Rudolf Krachler 《Chemie der Erde / Geochemistry》2009,69(3):223-234
General geochemical parameters of water, superficial sediments, and suspended particulate matter (SPM) were determined from small shallow saline lakes (soda ponds) as well as from lake Neusiedlersee in eastern Austria. Additionally, instrumental neutron activation analysis (INAA) was used to determine the distribution of major, rare earth and other trace elements in superficial sediments and SPM. Chemical results show remarkable differences in salinity and ionic strength between the investigated ponds. Anthropogenic effects, such as drawdown of ground water level and a loss of lake water due to drainage, are clearly reflected in obtained chemical and geological data. Due to a strong dependence of the complexation and scavenging behavior of the rare earth elements (REE) on ionic strength, a significant difference between REE concentrations in soda ponds with different anthropogenic impact was found. The content and composition of authigenic evaporitic minerals in superficial sediments and SPM clearly differ with a fluctuating water level and salt concentration. Furthermore, we determined the distribution of major and trace elements in superficial sediments of a nearby fluvial system. Our results show a clear correlation between REE superficial sediment concentrations in anthropogenically degraded soda ponds and fluvial system. Therefore, we assume that REE concentrations of sediments and SPM are suitable for the study of geochemical changes of inland saline lakes due to anthropogenic impacts on water balance. 相似文献
19.
Maharlu Lake with Na–Cl water type is the terminal point of a closed basin in southern Iran. A total of 10 water samples from two rivers discharging to the lake and 78 water samples of surface and pore brine of Maharlu Lake have been collected from different depths (surface, 20, 50 and 100 cm) of four sampling stations along the lake during a period of lake water-level fluctuation (November 2014–July 2015). To investigate chemical interaction between lake surface water and shallow pore water and to understand the major factors governing chemical composition of Maharlu brine, concentrations of major and minor (boron, bromide and lithium) solutes, pH and total dissolved solids have been measured in collected water samples. Saturation indices of evaporite minerals in collected water samples have been also calculated. The chemical behavior of dissolved solutes and evaporative evolution of the lake brine during a hydrological period have been simulated using PHREEQC. The results of our investigations indicated that chemical composition of lake surface water and pore brine of Maharlu Lake are mainly connected with lake water-level fluctuations and distance from input rivers (and depth), respectively. Hydrochemical investigations and statistical analysis showed that the brines chemistry of Maharlu is mainly controlled by three processes: brine evaporative evolution, dissolution–precipitation and diagenetic evolution of secondary carbonates. 相似文献
20.
Using multiple environmental methods to estimate groundwater discharge into an arid lake (Dakebo Lake,Inner Mongolia,China) 总被引：1，自引：1，他引：0
It is important to have both a qualitative and quantitative understanding of the hydraulic exchange between groundwater and surface water to support the development of effective management plans for sustainable use of water resources. Groundwater is a major source of surface-water recharge and plays an important role in maintaining the integrity of ecosystems, especially within wetlands in semi-arid regions. The Ordos Desert Plateau of Inner Mongolia (China) is a vulnerable ecosystem that suffers from an extreme lack of water. The hydraulic exchange between groundwater and lake water in Dakebo Lake (the largest of hundreds of lakes on the Ordos Desert Plateau) was evaluated using multiple environmental methods. Continuous monitoring of the groundwater and lake-water levels indicated that the lake was recharged vertically by groundwater. Application of hydrodynamic and temperature tracing methods to the western side of the lake indicated that the rate of groundwater discharge to the lake was about 2?×?10?6 to 3?×?10?6 m/s in spring, summer, and autumn, but that there was no recharge in winter because the hypolentic zone (HZ) was frozen. Mixing ratios of groundwater and lake water in the HZ, estimated from the 18O and 2H ratios, showed that there were spatial variations in the hydrodynamic exchange between groundwater and lake water within the HZ. 相似文献