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Temporal and spatial variation and prediction of water yield and water conservation in the Bosten Lake Basin based on the PLUS-InVEST model
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作者 CHEN Jiazhen KASIMU Alimujiang +3 位作者 REHEMAN Rukeya WEI Bohao HAN Fuqiang ZHANG Yan 《Journal of Arid Land》 SCIE CSCD 2024年第6期852-874,共23页
To comprehensively evaluate the alterations in water ecosystem service functions within arid watersheds,this study focused on the Bosten Lake Basin,which is situated in the arid region of Northwest China.The research ... To comprehensively evaluate the alterations in water ecosystem service functions within arid watersheds,this study focused on the Bosten Lake Basin,which is situated in the arid region of Northwest China.The research was based on land use/land cover(LULC),natural,socioeconomic,and accessibility data,utilizing the Patch-level Land Use Simulation(PLUS)and Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)models to dynamically assess LULC change and associated variations in water yield and water conservation.The analyses included the evaluation of contribution indices of various land use types and the investigation of driving factors that influence water yield and water conservation.The results showed that the change of LULC in the Bosten Lake Basin from 2000 to 2020 showed a trend of increasing in cultivated land and construction land,and decreasing in grassland,forest,and unused land.The unused land of all the three predicted scenarios of 2030(S1,a natural development scenario;S2,an ecological protection scenario;and S3,a cultivated land protection scenario)showed a decreasing trend.The scenarios S1 and S3 showed a trend of decreasing in grassland and increasing in cultivated land;while the scenario S2 showed a trend of decreasing in cultivated land and increasing in grassland.The water yield of the Bosten Lake Basin exhibited an initial decline followed by a slight increase from 2000 to 2020.The areas with higher water yield values were primarily located in the northern section of the basin,which is characterized by higher altitude.Water conservation demonstrated a pattern of initial decrease followed by stabilization,with the northeastern region demonstrating higher water conservation values.In the projected LULC scenarios of 2030,the estimated water yield under scenarios S1 and S3 was marginally greater than that under scenario S2;while the level of water conservation across all three scenarios remained rather consistent.The results showed that Hejing County is an important water conservation function zone,and the eastern part of the Xiaoyouledusi Basin is particularly important and should be protected.The findings of this study offer a scientific foundation for advancing sustainable development in arid watersheds and facilitating efficient water resource management. 展开更多
关键词 PLUS model InVEST model bosten lake Basin water yield water conservation land-use simulation Geodetector
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Carbon and Oxygen Isotopic Composition of Surface-Sediment Carbonate in Bosten Lake (Xinjiang,China) and its Controlling Factors 被引量:15
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作者 Steffen MISCHKE Alexander PROKOPENKO 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2009年第2期386-395,共10页
Bosten Lake is a mid-latitude lake with water mainly supplied by melting ice and snow in the Tianshan Mountains. The depositional environment of the lake is spatially not uniform due to the proximity of the major inle... Bosten Lake is a mid-latitude lake with water mainly supplied by melting ice and snow in the Tianshan Mountains. The depositional environment of the lake is spatially not uniform due to the proximity of the major inlet and the single outlet in the western part of the lake. The analytical results show that the carbon and oxygen isotopic composition of recent lake sediments is related to this specific lacustrine depositional environment and to the resulting carbonate mineralogy. In the southwestern lake region between the Kaidu River inlet and the Kongqi River outlet, carbon isotope composition (δ^13C) values of the carbonate sediment (-1‰ to -2‰) have no relation to the oxygen isotope composition of the carbonate (δ^18O) values (-7‰ to -8‰), with both isotopes showing a low variability. The carbonate content is low (〈20%). Carbonate minerals analyzed by X-ray diffraction are mainly composed of calcite, while aragonite was not recorded. The salinity of the lake water is low in the estuary region as a result of the Kaidu River inflow. In comparison, the carbon and oxygen isotope values are higher in the middle and eastern parts of the lake, with δ^13C values between approximately +0.5‰ and +3‰, and δ^18O values between -1‰ and -5‰. There is a moderate correlation between the stable oxygen and carbon isotopes, with a coefficient of correlation r of approximately 0.63. This implies that the lake water has a relatively short residence time. Carbonate minerals constitute calcite and aragonite in the middle and eastern region of the lake. Aragonite and Mg-calcite are formed at higher lake water salinity and temperatures, and larger evaporation effects. More saline lake water in the middle and eastern region of the lake and the enhanced isotopic equilibrium between water and atmospheric CO2 cause the correlating carbon and oxygen isotope values determined for aragonite and Mg-calcite. Evaporation and biological processes are the main reasons for the salinity and carbonate mineralogy influence of the surface-sediment carbonate in Bosten Lake. The lake water residence time and the CO2 exchange between the atmosphere and the water body control the carbon and oxygen isotope composition of the carbonate sediment. In addition, organic matter pollution and decomposition result in the abnormally low carbon isotope values of the lake surface-sediment carbonate. 展开更多
关键词 CARBONATE ARAGONITE calcite stable carbon and oxygen isotope composition bosten lake
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High-Resolution Records of the Holocene Paleoenvironmental Variation Reflected by Carbonate and Its Isotopic Compositions in Bosten Lake and Response to Glacial Activities 被引量:10
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作者 ZHANG Chengjun ZHENG Mianping +5 位作者 Alexander PROKOPENKO Steffen MISCHKE GOU Xiaohui YANG Qili ZHANG Wanyi FENG Zhaodong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2009年第6期1101-1115,共15页
The Early Holocene paleoclimate in Bosten Lake on the northern margin of the Tarim Basin, southern Xinjiang, is reconstructed through an analysis of a 953 cm long core (BSTC2000) taken from Bosten Lake. Multiple pro... The Early Holocene paleoclimate in Bosten Lake on the northern margin of the Tarim Basin, southern Xinjiang, is reconstructed through an analysis of a 953 cm long core (BSTC2000) taken from Bosten Lake. Multiple proxies of this core, including the mineral components of carbonate, carbonate content, stable isotopic compositions of carbonate, Ca/Sr, TOC and C/N and C/S of organic matter, are used to reconstruct the climatic change since 8500 a B.P. The chronology model is made by nine AMS 14C ages of leaves, seeds and organic matter contained in two parallel cores. The climate was cold and wet during 8500 to 8100 a B.P. Temperature increased from 8100 to 6400 a B.P., the climate was warm and humid, and the lake expanded. The lake level was highest during this stage. Then from 6400 to 5100 a B.P., the climate became cold and the lake level decreased slightly. During the late mid-Holocene, the climate was hot and dry from 5100 to 3100 a B.P., but there was a short cold period during 4400 to 3800 a B.P. At this temporal interval, a mass of ice and snow melting water supplied the lake at the early time and made the lake level rise. The second highest lake level stage occurred during 5200 to 3800 a B.P. The climate was cool and wet during 3100 to 2200 a B.P., when the lake expanded with decreasing evaporation. The lake had the last short-term high level during 3100 to 2800 a B.P. After this short high lake level period, the lake shrank because of the long-term lower temperature and reduced water supply. From 2200 to 1200 a B.P., the climate was hot and dry, and the lake shrank greatly. Although the temperature decreased somewhat from 1200 a B.P. to the present, the climate was warm and dry. The lake level began to rise a little again, but it did not reach the river bed altitude of the Konqi River, an outflow river of the Bosten Lake. 展开更多
关键词 CARBONATE isotopic composition glacial activity paleoenvironmental variation bosten lake
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Organochlorine pesticides and polycyclic aromatic hydrocarbons in water and sediment of the Bosten Lake,Northwest China 被引量:13
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作者 SHEN Beibei WU Jinglu ZHAO Zhonghua 《Journal of Arid Land》 SCIE CSCD 2017年第2期287-298,共12页
We evaluated organic pollution in Bosten Lake, Xinjiang, China, by measuring the concentrations and distributions of organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs). Water and sediment... We evaluated organic pollution in Bosten Lake, Xinjiang, China, by measuring the concentrations and distributions of organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs). Water and sediment samples were collected from 19 sites 031-1319) in the lake for analysis. Our analytical results show that the concentrations of total OCPs in water ranges from 30.3 to 91.6 ng/L and the concentrations of PAHs ranges from undetectable (ND) to 368.7 ng/L. The concentrations of total OCPs in surface (i.e., lake bottom) sediment ranges from 6.9 to 16.7 ng/g and the concentrations of PAHs ranges from 25.2 to 491.0 ng/g. Hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) account for large proportions of the OCPs. Low α- to γ-HCH ratios in both water and sediment samples indicate possible contributions from both industrial products and lindane. DDTs in water are probably from historical input, whereas DDTs in sediments are from both historical and recent inputs. Moreover, DDT products in both water and sediments were from multiple sources in the northwestern part of the lake(B11, B12, B13, and B14). Fugacity ratios for DDT isomers (p,p'-DDE and p,p'-DDT) at these sites were generally higher than equilibrium values. These results suggest that the input from the Kaidu River and diffusion of DDTs from the sediment to the water are responsible for DDT pollution in the water. Lower-molecular-weight PAHs, which originate primarily from wood and coal combustion and petroleum sources, represent the major fraction of the PAHs in both water and sediment samples. Our findings indicate that OCPs and PAHs in Bosten Lake can be attributed primarily to human activities. A risk assessment of OCPs and PAHs in water and sediment from Bosten Lake, however, suggests that concentrations are not yet high enough to cause adverse biological effects on the aquatic ecosystem. 展开更多
关键词 organochlorine pesticides (OCPs) polycyclic aromatic hydrocarbons (PAHs) bosten lake surface water and sediment spatial distribution
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Anomalous propagation conditions of electromagnetic wave observed over Bosten Lake, China in July and August, 2014
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作者 孙正 宁辉 +4 位作者 唐敬 谢永杰 石鹏飞 王建华 王柯 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第2期148-158,共11页
Atmospheric duct is a common phenomenon over large bodies of water, and it can significantly affect the performance of many radio systems. In this paper, a two-month(in July and August, 2014) sounding experiment in ... Atmospheric duct is a common phenomenon over large bodies of water, and it can significantly affect the performance of many radio systems. In this paper, a two-month(in July and August, 2014) sounding experiment in ducting conditions over Bosten Lake was carried out at a littoral station(41.89°N, 87.22°E) with high resolution GPS radiosondes, and atmospheric ducts were observed for the first time in this area. During the two months, surface and surface-based ducts occurred frequently over the Lake. Strong diurnal variations in ducting characteristics were noticed in clear days. Ducting occurrence was found at its lowest in the early morning and at its highest(nearly 100%) in the afternoon. Duct strength was found increasing from early morning to forenoon, and reaching its maximum in the afternoon. But contrarily, duct altitude experienced a decrease in a clear day. Then the meteorological reasons for the variations were discussed in detail, turbulent bursting was a possible reason for the duct formation in the early morning and the prevailing lake-breeze front was the main reason in the afternoon. The propagation of electromagnetic wave in a ducting environment was also investigated. A raytracing framework based on Runge–Kutta method was proposed to assess the performance of radio systems, and the precise critical angle and grazing angle derived from the ray-tracing equations were provided. Finally, numerical investigations on the radar performance in the observed ducting environments have been carried out with high accuracy, which demonstrated that atmospheric ducts had made great impacts on the performance of radio systems. The range/height errors for radar measurement induced by refraction have also been presented, too, which shows that the height errors were very large for trapped rays when the total range was long enough. 展开更多
关键词 bosten lake atmospheric duct diurnal ducting variation ray-tracing equations
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APPLICATION OF REMOTE SENSING TECHNIQUE TO THE INVESTIGATION ON REED RESOURCES OF BOSTEN LAKE
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作者 华润葵 李玉琴 《Chinese Geographical Science》 SCIE CSCD 1992年第3期72-82,共11页
It is efficient and reliable to investigate the reed resources of Bosten Lake in Xinjiang, characterized by complicated types of reed land and very different reed growth using colour infrared aerial photos, Landsat im... It is efficient and reliable to investigate the reed resources of Bosten Lake in Xinjiang, characterized by complicated types of reed land and very different reed growth using colour infrared aerial photos, Landsat images and multi band imagery. At first, on the basis of Landsat images and relevant data, we analyzed the ecological environment of the studied area, the characteristics of reed land types and imaging mechanism to determine the program for abstracting remote sensing information and aerial photographic conditions:On the processed Landsat images and aerial photos, we considered typically geographic features and reed land types, preselected ground sampling sections and sites, then determined indexes classifying reed land types according to sampling data and image characteristics, established various interpretation keys, drew distribution maps of reed land types and measured the area of various types of reed land following geometric correction. On the other hand, based on sampling values and 展开更多
关键词 REMOTE sensing APPLICATION REED RESOURCES RESOURCES INVENTORY bosten lake
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Analysis of Trents of Future Temperature in the Bosten Lake Basin Based on a Statistical Downscaling Model
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作者 邱冰 姜加虎 《Journal of Resources and Ecology》 CSCD 2010年第3期273+268-272,共6页
SDSM统计降尺度模型是解决空间尺度不匹配问题的有效工具,它使气候变化响应研究得以在区域尺度上展开。本文将SDSM模型应用于博斯腾湖流域分析它的适用性,并对流域未来最高和最低气温的变化趋势进行了预测。以日最高气温和最低气温为预... SDSM统计降尺度模型是解决空间尺度不匹配问题的有效工具,它使气候变化响应研究得以在区域尺度上展开。本文将SDSM模型应用于博斯腾湖流域分析它的适用性,并对流域未来最高和最低气温的变化趋势进行了预测。以日最高气温和最低气温为预报量,选取合适的NCEP大气环流因子为预报因子,建立预报量与预报因子间的回归关系。使用1961-1990、1991-2001年的实测数据和NCEP大气变量分别对SDSM模型进行率定和验证,效果较好。把HadCM3输出的A2、B2情景下的大气环流变量作为模型输入变量,模拟流域未来3个时期(21世纪20、50和90年代)的气温变化。结果显示,流域未来日最高气温和日最低气温都呈现明显上升趋势,升高幅度依次为:日最高气温】日平均气温】日最低气温,且A2情景下气温增幅略大于B2情景下的增幅;冬季气温增幅最小,夏季增幅最大。分析结果可为博斯腾湖流域开展气候变化的水文响应研究以及气候变化的适应性研究提供科学依据。 展开更多
关键词 climate change statistical downscaling the bosten lake Basin TEMPERATURE
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Holocene lake deposits of Bosten Lake,southern Xinjiang,China 被引量:15
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作者 B.Wuennemann CHENFahu +5 位作者 F.Riedel ZHANGChengiun S.Mischke CHENGuangjie D.Demske MINGJin 《Chinese Science Bulletin》 SCIE EI CAS 2003年第14期1429-1432,共4页
A 9.25-m-long sediment core from Bosten Lake, Xinjiang, provides detailed information about changes in the water budget and biological acticity over the last 8400 calendar years. The chronology is constructed from six... A 9.25-m-long sediment core from Bosten Lake, Xinjiang, provides detailed information about changes in the water budget and biological acticity over the last 8400 calendar years. The chronology is constructed from six AMS radiocarbon dates on the terrestrial plant remains. Based on analyses of TOC, CO3, detrital compounds and biogenic SiO2, lake level fluctuations and periods of remarkably-negative water budget appeared at 8.4—8.2 cal ka, 7.38—7.25 cal ka, 5.7—5.5 cal ka, 3.7—3.4 cal ka and 3.3—2.9 cal ka, respectively. As they are in-phase with low lake levels at Sumxi Co and Bangong Co in western Tibet Plateau and with paleolakes in Inner Mongolia, a climate-induced change to somewhat drier and warmer conditions is inferred. A further drop in lake level after 1320 AD of about 200 yr duration may be attributed to a negative water balance prior to the main phase of the Little Ice Age. Deep and stable lake phases of 1500 yr and 1800 yr duration at 7.2—5.7 cal ka and 5.5—3.7 cal ka coincide with maximum moisture during the Holocene Megathermal in China. The long term trend towards aridity since about 4.3 cal ka can clearly be recognised. The reduced water budget of Bosten Lake from 640—1200 AD may be attributed to local effects. 展开更多
关键词 中国 新疆南部 波士顿湖 全新世 湖泊沉积物 古气候 湖平面 气候变化
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Humid Little Ice Age in arid central Asia documented by Bosten Lake, Xinjiang, China 被引量:14
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作者 J. A. Holmes 《Science China Earth Sciences》 SCIE EI CAS 2006年第12期1280-1290,共11页
Short sediment cores retrieved from Bosten Lake, the largest inland freshwater lake in China, were used to explore humidity and precipitation variations in arid central Asia during the past millennium. The chronology ... Short sediment cores retrieved from Bosten Lake, the largest inland freshwater lake in China, were used to explore humidity and precipitation variations in arid central Asia during the past millennium. The chronology of the cores was established using 137Cs, 210Pb and AMS 14C dating re- sults. Multi-proxy high-resolution analysis, including pollen ratios of Artemisia and Chenopodiaceae (A/C), carbonate content and grain size, indicates that the climate during the past millennium can be divided into three stages: a dry climate between 1000―1500 AD, a humid climate during the Little Ice Age (LIA) (c. 1500―1900 AD), and a warm dry period after 1900 AD. On centennial timescales, the climate change in northwestern China during the past 1000 years is characterized by oscillations between warm-dry and cold-humid climate conditions. All the proxies changed significantly and indi- cate increased precipitation during the LIA, including increased pollen A/C ratios and pollen concen- trations, decreased carbonate content and increased grain size. The humid period during the LIA re- corded by the Bosten Lake sediments is representative of arid central Asia and is supported by nu- merous records from other sites. During the LIA, the water runoff into the Keriya River and Tarim River in the Tarim Basin increased, while the ice accumulation in the Guliya ice core increased. Additionally, the lake levels of the Aral and Caspian Sea also rose, while tree-ring analysis indicates that precipita- tion increased. We hypothesize that both the lower temperature within China and the negative anomalies of North Atlantic Oscillation (NAO) during this period may have contributed to the humid climate within this area during LIA. 展开更多
关键词 MULTIPROXY analyses bosten lake humid LITTLE Ice Age past millennium arid central Asia.
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ISOTOPIC EVIDENCE FOR HOLOCENE CLIMATIC CHANGES IN BOSTEN LAKE,SOUTHERN XINJIANG,CHINA 被引量:4
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作者 钟巍 熊黑钢 《Chinese Geographical Science》 SCIE CSCD 1998年第2期81-87,共7页
Based on the δ13C and δ18O fluctuation of lacustrine carbonate, CaCO3 content and sporopollen data, a palaeoclimatic history of Bosten Lake during the Holocene has been outlined, several stages of climatic changes a... Based on the δ13C and δ18O fluctuation of lacustrine carbonate, CaCO3 content and sporopollen data, a palaeoclimatic history of Bosten Lake during the Holocene has been outlined, several stages of climatic changes are divided, and the following result es are obtained: (1) Palaeoclimatic changes revealed by carbonate isotope around Bosten Lake are basically identical with that revealed by other geological records in Xinjiang. Environmental changes presented apparent Westlies Style model: during cold period, relative humidity increased, δ18O, δ13C and CaCO3 appeared low; but in warm periods, the dry regime aggravated. (2) The temperature reflected by δ18O exist evident features being increase in the late period during the Holocene. Together with the δ13C, pollen and CaCO3 analyses, several cold and warm phases which are of broad regional significance can be identified. The warm peaks occurred at about 11.0 ka B.P., 9.4 ka B.P., 7.5 ka B.P., 5.0 ka B.P., 3.0 ka B.P. and 2.0 ka B.P.; the cold peaks at 11.5 ka B.P., 10.5 ka B.P., 8.8 ka B.P., 5.5 ka B.P., 3.3 ka B.P., 2.2 ka B.P. and 1.5 ka B.P.. (3) Several climatic events with the nature of “abrupt climatic changes” are revealed in the periods of 11.0 ka B.P.-10.5 ka B.P., 9.4 ka B.P.-8.8 ka B.P., 5.5 ka B.P.-5.0 ka B.P. and 2.0 ka B.P.-1.5 ka B.P.. (4) The results show that carbonate isotopic record of lacustrine sediment in arid area is very sensitive to climatic changes, and may be play a very important role in understanding the features and mechanism of palaeoclimatic changes. 展开更多
关键词 bosten lake Δ18O of CARBONATE δ13C of CARBONATE HOLOCENE CLIMATIC CHANGES
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基于演化博弈的新疆博斯腾湖流域生态补偿机制研究
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作者 卢泉 刘雪雪 +2 位作者 刘亮 王鹏鹏 冯啸林 《人民黄河》 CAS 北大核心 2024年第3期75-79,共5页
流域生态补偿能有效解决资源开发利用过程中产生的外部性问题,对促进流域经济-社会-生态协同发展具有重要意义。基于演化博弈理论分析上级政府与上、下游地方政府的三方动态演化情景,以新疆博斯腾湖流域为研究对象,设定流域生态补偿机... 流域生态补偿能有效解决资源开发利用过程中产生的外部性问题,对促进流域经济-社会-生态协同发展具有重要意义。基于演化博弈理论分析上级政府与上、下游地方政府的三方动态演化情景,以新疆博斯腾湖流域为研究对象,设定流域生态补偿机制。结果表明:上级政府对违约方征收的罚金高于流域上游生态保护成本和下游生态补偿金时,上、下游才能达到“保护”和“补偿”策略的稳定均衡状态。基于演化结果测算的博斯腾湖生态补偿金、生态保护成本分别为2.64×10^(7)、2.20×10^(7)元/a。采用“关键污染因子超标赔偿法”确定以COD_(Mn)、NH_(3)-N、TP三类污染物超标为评价依据的处罚标准分别为1312.51、9181.56、13115.08元/t。 展开更多
关键词 生态补偿 演化博弈 污染物 博斯腾湖 新疆
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博斯腾湖COD_(Cr)污染现状及影响因素分析
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作者 郑刚 姚力 章文亭 《新疆环境保护》 2024年第2期11-18,共8页
近几年博斯腾湖COD_(Cr)污染问题突出,制约了区域社会经济的可持续发展。目前有关博斯腾湖COD_(Cr)的研究,主要集中于非长序列的COD_(Cr)时空特征分析,而对造成这种时空特征的成因缺乏定量化分析研究。鉴于此,在收集分析博斯腾湖COD_(Cr... 近几年博斯腾湖COD_(Cr)污染问题突出,制约了区域社会经济的可持续发展。目前有关博斯腾湖COD_(Cr)的研究,主要集中于非长序列的COD_(Cr)时空特征分析,而对造成这种时空特征的成因缺乏定量化分析研究。鉴于此,在收集分析博斯腾湖COD_(Cr)长序列变化特征的基础上,通过统计分析和模型模拟等方法,系统探讨了博斯腾湖COD_(Cr)污染的主要影响因素及其作用机理。主要研究结论为:入湖负荷和湖泊水位对COD_(Cr)的影响存在共轭作用,主导作用取决于水位阈值;当水位低于1047.1 m,水位稀释作用占主导,当水位高于1047.1 m时,入湖负荷占主导;湖泊水动力条件主要受风生流控制,近年来风速呈上升趋势,增强了湖区内部的水循环,进而影响西部湖区COD_(Cr)浓度;湖泊藻类浓度与水位呈负相关,而与COD_(Cr)浓度呈正相关,COD_(Cr)与藻类浓度显著相关性的内在机制是两者均受水位影响。该研究为博斯腾湖COD_(Cr)污染治理提供了科学依据,同时提出未来研究的关注点是加强对底泥、水温和溶解氧的垂向相关数据的监测,以进一步分析底泥对水体COD_(Cr)的影响。 展开更多
关键词 博斯腾湖 COD_(Cr) 入湖负荷 湖泊藻类 水位 水动力模型
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基于模糊隶属度分布函数的博斯腾湖景观适宜水位确定
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作者 刘洋 李江 +5 位作者 陈诚 林育青 莫康乐 胡明涛 李沁园 陈求稳 《水资源保护》 EI CAS CSCD 北大核心 2024年第3期116-124,共9页
采用层次分析法识别博斯腾湖景观关键点,基于湖泊特征水位分析,构建了景观关键点水位和景观适宜度的模糊隶属度分布函数,计算了不同季节博斯腾湖景观适宜水位范围。结果表明:湖泊水质、年旅游业收益是识别博斯腾湖景观关键点的主要因素... 采用层次分析法识别博斯腾湖景观关键点,基于湖泊特征水位分析,构建了景观关键点水位和景观适宜度的模糊隶属度分布函数,计算了不同季节博斯腾湖景观适宜水位范围。结果表明:湖泊水质、年旅游业收益是识别博斯腾湖景观关键点的主要因素;博斯腾湖最佳景观水位为1046.70 m,低警戒水位为1045.00 m,高警戒水位为1047.90 m,低、高破坏边缘水位分别为1045.40 m和1047.40 m;不同季节博斯腾湖景观适宜水位存在差异,春季和秋季景观适宜水位范围为1045.90~1047.16 m,夏季为1046.00~1047.00 m,冬季为1045.85~1047.25 m。 展开更多
关键词 景观适宜水位 景观关键点 模糊隶属度分布函数 层次分析法 博斯腾湖
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内陆淡水湖博斯腾湖水质遥感反演及时空演变特征
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作者 吕娜 郭梦京 +2 位作者 赵馨 刘可乐 黄宇佳 《干旱区地理》 CSCD 北大核心 2024年第6期953-966,共14页
湖泊作为干旱区重要的水源载体,旱区湖泊的水质变化对维持区域生态平衡和水分循环发挥着重要作用。因此,以我国内陆淡水湖泊博斯腾湖为研究区,对2001—2020年Landsat系列遥感影像进行大气校正、辐射定标等预处理;利用改进的归一化指数... 湖泊作为干旱区重要的水源载体,旱区湖泊的水质变化对维持区域生态平衡和水分循环发挥着重要作用。因此,以我国内陆淡水湖泊博斯腾湖为研究区,对2001—2020年Landsat系列遥感影像进行大气校正、辐射定标等预处理;利用改进的归一化指数法提取水体分析其面积变化趋势,并结合实测矿化度浓度及叶绿素a浓度数据,利用经验方法对比分析波段及波段组合反射率与矿化度浓度以及叶绿素a浓度的相关性,并筛选出相关性最好的波段建立模型。以B5、B3/B4、B3+B4的波段组合构建矿化度浓度反演模型,以B2、B3、B2×B3的波段组合构建叶绿素a浓度反演模型。最后利用决定系数和均方根误差对遴选出的2个反演模型进行精度验证。结果表明:(1)湖区面积变化呈2001—2013年逐渐缩小、2013年后逐渐回升两阶段趋势。(2)博斯腾湖矿化度浓度空间分布具有湖中心浓度高,湖周边浓度低的特点;叶绿素a浓度空间分布与矿化度浓度分布相反。(3)长时间序列下的博斯腾湖区矿化度浓度与叶绿素a浓度在年尺度上均呈现先增加后减小的趋势。其中矿化度浓度最大值为2013年的1023.8 mg·L^(-1),叶绿素a浓度最大值为2015的5.04μg·L^(-1)。在过去的几十年里,中国在博斯腾湖的水质监控及其治理成果方面取得了显著进展,但在时空覆盖、指标列表、人与自然相互作用的结合、反演精度和模型泛化等方面还需进一步改进。 展开更多
关键词 叶绿素A 矿化度 遥感反演 博斯腾湖
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博斯腾湖流域景观破碎化时空特征及其成因
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作者 阿迪拉·亚尔买买提 李新国 刘彬 《西北林学院学报》 CSCD 北大核心 2024年第5期263-272,共10页
以博斯腾湖流域为研究区,运用景观格局指数、主成分分析法,定量分析研究区2000-2020年的景观破碎化的时空变化特征,并采用地理探测器模型探讨研究区景观破碎化的驱动机制。结果表明:1)2000-2020年,研究区边缘密度(ED)由2000年的5.787 m/... 以博斯腾湖流域为研究区,运用景观格局指数、主成分分析法,定量分析研究区2000-2020年的景观破碎化的时空变化特征,并采用地理探测器模型探讨研究区景观破碎化的驱动机制。结果表明:1)2000-2020年,研究区边缘密度(ED)由2000年的5.787 m/km^(2)增至2020年的6.859 m/km^(2),增加1.072 m/km^(2);蔓延度指数(CONTAG)由75.970%增加至79.596%,增加3.626%;分离度指数(DIVISION)由0.361增加到0.626;香农多样性指数(SHDI)由0.689减少到0.606。2)2000-2020年,景观破碎化程度较为严重的地区集中在焉耆县、博湖县、库尔勒市以及轮台县的西南部;和硕县东部以及尉犁县东南部破碎化程度相对较低。2000-2010年,高度等级面积增加较为明显,面积比增加5.30%;极低等级面积减小较为明显,面积比减小3.21%;2010-2020年,低度等级面积增加较为明显,面积比增加1.48%;极低等级面积减小较为明显,面积比减小2.37%。3)研究区景观破碎化受到自然、社会等因素影响,高程(X2)对景观破碎化的驱动力相对最大,因子平均贡献率为0.195;年降水量(X4)和年均气温(X5)对景观破碎化的驱动较强,因子平均贡献率分别为0.127和0.110;人口密度(X8)对景观破碎化的驱动力相对最小,因子平均贡献率为0.045。 展开更多
关键词 景观破碎化 景观格局指数 成因分析 地理探测器模型 博斯腾湖流域
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1955—2020年博斯腾湖水盐收支估算与水盐平衡分析
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作者 明广辉 程欢 +3 位作者 毕黎明 谭培影 季小兵 邓海军 《水资源与水工程学报》 CSCD 北大核心 2024年第2期21-31,共11页
为了探讨变化环境下开都河来水、人类水土开发和水利工程调节等对博斯腾湖水盐收支变化规律的影响,根据开都-孔雀河流域河流-湖泊-水利工程间的水力联系及水盐运移转化过程,构建了博斯腾湖水盐收支平衡模型,基于1955—2020年气象、水文... 为了探讨变化环境下开都河来水、人类水土开发和水利工程调节等对博斯腾湖水盐收支变化规律的影响,根据开都-孔雀河流域河流-湖泊-水利工程间的水力联系及水盐运移转化过程,构建了博斯腾湖水盐收支平衡模型,基于1955—2020年气象、水文、矿化度、开发利用的观测资料,分析了博斯腾湖逐年、分阶段和多年平均水盐收支变化规律。结果表明,受开都河来水和人类活动的影响,1955—2020年博斯腾湖水盐变化具有明显的4阶段特征。1987年以来水盐变化速率明显升高;焉耆盆地和孔雀河引水量较为稳定,开都河入湖水量占总入湖水量的81.89%,在1955—2020年博斯腾湖水位变化中起主导作用;1955—1987年农田排盐量占总入湖盐量的37.24%,其中1972—1986年农田排盐量接近总入湖盐量的50%,农田排盐量是湖水矿化度急剧升高的主要原因;1983年博斯腾湖西泵站运行后,湖水矿化度整体处于下降趋势,2020年降低到1.0 g/L以下。新时期在对开都-孔雀河流域严格遵守水资源三条红线控制的同时,加强扬水泵站、宝浪苏木分水闸及达吾提闸的联合运行,完全可以将湖水矿化度控制在1.0 g/L水平以下。研究结论可为博斯腾湖可持续利用和管理提供参考。 展开更多
关键词 水盐收支平衡 矿化度 扬水泵站 孔雀河 开都河 博斯腾湖
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1977—2021年博斯腾湖大湖区湖岸线动态变化
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作者 阿迪拉·亚尔买买提 李新国 《水资源与水工程学报》 CSCD 北大核心 2024年第2期99-106,共8页
湖泊岸线的动态变化可以表征湖泊的变化。以博斯腾湖大湖区为研究区,基于1977—2021年的Landsat遥感影像数据和实测水位资料,利用MNDWI法提取水体信息,运用岸线发育系数与岸线强度,分析研究区岸线动态变化,探讨影响研究区岸线动态变化... 湖泊岸线的动态变化可以表征湖泊的变化。以博斯腾湖大湖区为研究区,基于1977—2021年的Landsat遥感影像数据和实测水位资料,利用MNDWI法提取水体信息,运用岸线发育系数与岸线强度,分析研究区岸线动态变化,探讨影响研究区岸线动态变化的主要因素。研究结果表明:1977—2021年研究区岸线变化最明显的区域主要是研究区北岸。1977—1989年北岸岸线向南迁移的最大距离为0.93 km;1989—2003年北岸岸线向北迁移的最大距离为5.12 km;2003—2013年北岸岸线向南迁移的最大距离为5.46 km;2013—2021年北岸岸线向北迁移的最大距离为5.11 km。1977—1989年研究区岸线长度以1.55 km/a的速率逐渐缩短;1989—2002年岸线以16.34 km/a的速率持续增长;2002—2012年岸线以22.67 km/a的速率明显缩短;2012—2021年岸线以14.36 km/a的速率快速增长。年降水量、年均气温以及开都河径流量等自然要素是研究区岸线、水位和水面面积变化的主要自然因素。研究区岸线长度和曲折性受水位和水面面积的影响较为明显,1977—2021年研究区水位、水面面积和岸线长度的变化趋势基本一致。 展开更多
关键词 岸线变化特征 MNDWI指数 岸线发育系数 Landsat数据 博斯腾湖大湖区
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基于芦苇生长过程中水位和盐度约束条件的博斯腾湖生态水位
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作者 郑刚 何术锋 +3 位作者 乔如霞 李沁园 张思九 林育青 《新疆环境保护》 2024年第3期14-21,共8页
受气候变化和人类活动的双重影响,近年来博斯腾湖水位波动较大,对博斯腾湖芦苇生长及芦苇资源造成显著影响。基于博斯腾湖长序列水文水环境历史数据和遥感数据,分析水位—盐度—芦苇面积之间的关系;结合芦苇生长状况,量化了芦苇不同生... 受气候变化和人类活动的双重影响,近年来博斯腾湖水位波动较大,对博斯腾湖芦苇生长及芦苇资源造成显著影响。基于博斯腾湖长序列水文水环境历史数据和遥感数据,分析水位—盐度—芦苇面积之间的关系;结合芦苇生长状况,量化了芦苇不同生长阶段的适宜水位、盐度阈值区间。结果显示:芦苇萌芽期最适宜水深为0 m,盐度非约束条件;芦苇生长期和抽穗期适宜水深为0.3~0.6 m,适宜盐度为1.39~1.52 g/L。综合芦苇不同生长阶段水位及盐度阈值,提出了基于芦苇生长对水位和盐度条件需求的博斯腾湖生态水位:5—6月份为1 046.0~1 046.3 m,7—10月份为1 046.5~1 046.8 m。研究对于保障博斯腾湖芦苇生态功能及经济效益具有重要意义,可为干旱地区水资源高效利用提供科学参考。 展开更多
关键词 博斯腾湖 生态适宜水位 芦苇 盐度 不同生长阶段
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新疆博斯腾湖地区大气PM_(10)中多环芳烃的污染特征、来源及健康风险评价
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作者 凌再莉 宋世杰 黄韬 《地球与环境》 CAS CSCD 北大核心 2024年第1期29-40,共12页
为了解中国西部干旱区域博斯腾湖地区大气颗粒物中多环芳烃(PAHs)的污染水平和健康风险,本研究于2016年采暖期和2017年非采暖期,在该地区博湖县和周边的塔中采集了可吸入颗粒物(PM_(10))样品,使用气相色谱-质谱联用仪(GC-MS)测定PM_(10... 为了解中国西部干旱区域博斯腾湖地区大气颗粒物中多环芳烃(PAHs)的污染水平和健康风险,本研究于2016年采暖期和2017年非采暖期,在该地区博湖县和周边的塔中采集了可吸入颗粒物(PM_(10))样品,使用气相色谱-质谱联用仪(GC-MS)测定PM_(10)中美国环境保护署(USEPA)优先控制的16种多环芳烃(PAHs)的浓度,分析其污染特征、来源及其对人群的健康风险。结果表明,博湖县采暖期大气PM_(10)中PAHs浓度显著高于非采暖期,分别为47.63±29.00 ng/m^(3)和3.24±1.05 ng/m^(3);塔中地区在采暖期和非采暖期未表现出明显的季节差异,且污染水平较低,分别为2.13±0.90 ng/m^(3)和1.89±0.23 ng/m^(3)。研究区大气PM_(10)中PAHs以中高环为主,采暖期以荧蒽(Flua)、芘(Pyr)、苯并[b]荧蒽(BbF)和[艹屈](Chr)为主要污染单体,非采暖期以菲(Phe)、荧蒽(Flua)、茚并[1,2,3-cd]芘(IcdP)和苯并[g,h,i]苝(BghiP)为主。源解析结果表明,燃烧源对博湖县和塔中PAHs贡献最大,分别为82.54%和61.13%。轨迹分析表明新疆北部和塔里木盆地西部排放的PAHs可通过大气传输对博斯腾湖地区造成影响。健康风险评估结果表明,博湖县采暖期大气PM_(10)中PAHs对各类人群的终生致癌风险(ILCR)值均处于10^(-6)~10^(-4),对人体具有潜在致癌风险。 展开更多
关键词 博斯腾湖地区 PM_(10) 多环芳烃 来源解析 健康风险评价
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中国新疆博斯腾湖现代碳库效应研究
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作者 杜丁丁 张成君 李志文 《湖泊科学》 EI CAS CSCD 北大核心 2024年第4期1279-1288,共10页
碳库效应存在影响了14 C测年的准确性,制约了沉积物在湖泊研究中的应用。本文研究位于典型西风环流带的新疆博斯腾湖现代碳库效应,结合同位素地球化学、水化学等方法,探讨了博斯腾湖碳库效应的影响机制。研究结果表明,博斯腾湖最大现代... 碳库效应存在影响了14 C测年的准确性,制约了沉积物在湖泊研究中的应用。本文研究位于典型西风环流带的新疆博斯腾湖现代碳库效应,结合同位素地球化学、水化学等方法,探讨了博斯腾湖碳库效应的影响机制。研究结果表明,博斯腾湖最大现代碳库年龄为3535年,最小为现代碳,集中在670~945年。而过去碳库效应集中在1033~2200年。深水区表现为碳库年龄较小且稳定;在入湖口碳库效应最大,富水生植物浅水区碳库效应最小。与过去碳库年龄相比较,现代碳库效应整体表现更为年轻。研究发现,博斯腾湖口受流域外源“死”碳影响,深水区受湖水与大气CO_(2)交换率差异影响,富水生植物浅水区可能受水生植物光合作用影响。此外,核爆效应也对博斯腾湖现代碳库效应产生了影响,可能导致最高约1000年的年代误差。利用深水区放射性碳比活度(pMC)平均值与大气碳比活度差值(~18%),得出深水区沉积物存在约846年现代碳库效应,再经核爆效应校正后得出博斯腾湖存在最高约1800年碳库效应。 展开更多
关键词 博斯腾湖 现代碳库效应 变化规律 影响因素
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