南京师范大学虚拟地理环境教育部重点实验室

实验室简介南京师范大学虚拟地理环境教育部重点实验室在地图学与地理信息系统国家重点学科支撑下,经过多年的努力与发展,已成为我国地理学与地理信息科学科学研究、学术交流、高层次人才培养和地理信息产业     

第九届SuperMap杯全国高校GIS大赛激情开赛

3月16日,第九届"SuperMap杯全国高校GIS大赛"在京正式启动。据悉,本届大赛由中国地理学会与北京超图软件股份有限公司联合主办,旨在为高校学生提供更多的实践和展示机会,促进高校GIS教育与产业人才培养工作。     

国内高校应用气象学专业人才培养方案比较研究

选定北京大学、南京大学、南京信息工程大学等国内8所高校现行应用气象学专业本科人才培养方案为研究对象,从人才培养目标、人才培养的学制与所获学位、教学计划中的课程设置、实践教学和毕业论文的安排、模块教学5个方面,统计分析其异同点;从总体目标、培养规格、课程设置的统一,学制与学分制的优化,毕业论文撰写时间的调整,方向模块教学的设置4个方面进行了探讨;提出了关于广东海洋大学开设应用气象学专业的设想,优化课程体系,把创新创业教育融入应用气象学人才培养全过程;发挥海洋、水产学科优势,培养特色应用气象学人才;顺应时代潮流,培养创新创业型应用气象学人才,以培养创新创业人才为目标,制订应用气象学人才培养方案。     

构建高层次复合型会计人才培养模式初探

会计人才培养模式的研究 ,已成为高等院校会计教育改革的重大课题 ,对我国会计教育的现状及会计高等教育的改革方向进行了简要分析 ,进一步明确了会计人才培养目标的具体内涵 ,并提出了构建高层次复合型会计人才培养模式的总体思路及目前会计人才培养模式改革的有效途径。     

对我国GIS教育与人才培养的思考

从专业设置，教学培养计划，专业核心课程三个不同层面，对我国理学、工学两大学科领域内地理信息系统专业教育与人才培养作了对比与分析，旨在为我国跨世纪GIS教育与人才培养提供一些借鉴。     

构建高层次复合型会计人才培养模式初探

会计人才培养模式的研究，已成为高等院校会计教育改革的重大课题，对我国会计教育的现状及会计高等教育的改革方向进行了简要分析，进一步明确了会计人才培养目标的具体内涵，并提出了构建高层次复合型会计人才培养模式的总体思路及目前会计人才培养模式改革的有效途径。     

焦作地理信息产学研合作基地揭牌

正4月23日,焦作地理信息产业园与河南理工大学国土与测绘信息工程学院战略合作签约暨产学研合作基地揭牌仪式在焦作举行。此次战略合作签约暨产学研合作基地揭牌仪式标志着双方将围绕建设实习实践教育基地、联合人才培养、创建新技术创新联盟、开展高科技成果转化等开展深入合作。焦作地理信息产业园区将为河南理工大学师生施展才华提供广阔舞台,为科研项目落地提供丰厚土壤,为师生创新创业营造良好环境。河南理工大学将充分发挥人才、技术、业务优势,开     

不忘初心 逐梦前行

<正>《地理信息世界》创刊于1994年,刊载地理信息理论研究、技术应用和产业政策等方面的研究成果和发展动态。创刊20多年来,《地理信息世界》作为以推动测绘地理信息学术创新、科技创新、产业创新为宗旨的,具有权威性的国内外公开发行的中国科技核心期刊,广泛交流学术成果,积极活跃学术氛围,办刊水平日益提升,在推动测绘地理信息成果应用、繁荣地理信息科技发展以及新技术推广、人才培养等方面发挥了重要作用。2016年底,国家测绘地理信息局决定,《地理信息世界》由国家基础地理信息中心、中国地理信息产业协会和黑龙江测绘地理信     

湖南省地理信息产业发展战略思考

阐述了地理信息产业的内涵和特点,介绍了国内外发展现状与发展趋势,及地理信息产业发展在国民经济建设中的地位和作用。提出湖南省地理信息产业的主要问题、发展对策,以及发展地理信息产业的的思考。     

信息动态

《地理信息世界》创刊于1994年,刊载地理信息理论研究、技术应用和产业政策等方面的研究成果和发展动态.创刊20多年来,《地理信息世界》作为以推动测绘地理信息学术创新、科技创新、产业创新为宗旨的,具有权威性的国内外公开发行的中国科技核心期刊,广泛交流学术成果,积极活跃学术氛围,办刊水平日益提升,在推动测绘地理信息成果应用、繁荣地理信息科技发展以及新技术推广、人才培养等方面发挥了重要作用.     

Changes of Biogenic Elements in Phragmites australis and Suaeda salsa from Salt Marshes in Yellow River Delta,China

Little information is available on biogenic elements(carbon, nitrogen, phosphorus and sulfur) and the ecological stoichiometric characteristics of plants in coastal wetlands. To investigate the contents of carbon, nitrogen, phosphorus and sulfur of plants, and their ecological stoichiometric characteristics in the Yellow(Huanghe) River Delta, plant samples were collected from two typical salt marshes(Suaeda salsa and Phragmites australis wetlands) during the period of from August to October in 2007, and the ratios of C/N, C/P, N/P, C/N/P and C/N/P/S were calculated. Results showed that during the studying period, plant C, N and P were lower than the global average values, and plant N and P were lower than the China's average values. Leaf C and S in Suaeda salsa were significantly lower than those in Phragmites australis(P 0.05), and leaf N and P in Suaeda salsa and Phragmites australis showed no significant differences(P 0.05). Average C/N ratios were 23.75 in leaf, 73.36 in stem, 65.67 in root of Suaeda salsa, and 33.77 in leaf, 121.68 in stem, 97.13 in root of Phragmites australis. Average C/N ratios of Suaeda salsa and Phragmites australis were all great than 25, indicating the salt marsh in the Yellow River Delta is an N limitation system. Average C/P ratios were 276.78 in leaf, 709.28 in stem and 1031.32 in root of Suaeda salsa, and 536.94 in leaf, 768.13 in stem and 875.22 in root of Phragmites australis. The average N/P ratios of Suaeda salsa were 12.92 in leaf, 10.77 in stem and 10.91 in root, and the average N/P ratios of Phragmites australis were 16.40 in leaf, 7.40 in stem and 6.92 in root, indicating the Suaeda salsa wetlands were N limited and Phragmites australis wetlands were N limited in August and P limited in October in 2007. The average C/N, C/P and C/N/P ratios in Suaeda salsa and Pragmites australis were higher than the global average values, indicating the lower quality of organic matter provided by wetland plants in the Yellow River delta.     

基于随机森林模型的中国中老年人群HDL-C环境影响因素研究

高密度脂蛋白胆固醇（HDL-C）可以有效促进人体内胆固醇的代谢外排,其水平的高低与患心血管疾病的风险呈负相关关系,是心血管疾病的预防与保护因素。厘清我国中老年人群HDL-C水平的地理分异特征及环境影响因素,对我国心血管疾病防治工作的开展有重要意义。论文基于中国中老年人纵向追踪调查,利用全局空间自相关、冷热点分析等方法阐释中国中老年人群HDL-C水平的空间分异特征及变化趋势,同时对比引入随机森林回归模型及多元线性回归方法探讨HDL-C水平空间分布的环境影响因素及其指示作用。结果表明：中国中老年人群HDL-C水平表现为女性高于男性、农村高于城镇,具有明显的地域差异性,整体呈现出“北低南高,中间过渡”的分布格局,且北方出现了以内蒙古、河北、辽宁为代表的低值聚集区,南方出现了以广东、广西、云南为代表的高值聚集区;SO2、NO2、降水、气压、PM10和PM2.5是影响中老年人群HDL-C水平差异分布的主要环境因素,其中高浓度的空气污染物是造成HDL-C值较低的危险因素,充沛的降水和低压环境是防治HDL-C值较低的保护因素。因此,今后关于HDL-C血脂异常防控工作在全国各地应注重其空间分布规律,重...     

Geochemical features of aquatic environment in crater and barrier lakes in northeast of China

Ｉ．ＩＮＴＲＯＤＵＣＴＩＯＮＭｏｓｔｖｏｌｃａｎｏｅｓａｒｅｄｉｓｔｒｉｂｕｔｅｄｉｎｎｏｒｔｈｅａｓｔｏｆＣｈｉｎａ．Ｔｈｅｖｏｌｃａｎｉｃｅｒｕｐｔｉｏｎｓｃａｎｃｈａｎｇｅｔｈｅｇｅｎｅｒａｌｍｏｒｐｈｏｌｏｇｉｃｃｏｎｆｉｇｕｒａｔｉｏｎｏｆ...     

硫对地球表层生态系统中镉迁移转化影响的研究进展:以土壤-植物系统为例

硫作为植物体内蛋白质、多种酶和其他生理活性物质的重要组成成分,具有不可替代性,是作物生长必需营养元素。由于硫元素的化学特征及其特殊的生理功能,使得硫在地表生态系统的迁移转化过程中与重金属元素镉的生态环境效应产生一定的耦合作用,并直接或间接影响镉在土壤-植物系统中的迁移和累积。在一定土壤环境条件下,硫通过价态变化直接与重金属元素镉发生作用,影响镉的生物有效性; 另外,硫可通过影响植物根表铁锰胶膜的形成改变镉在土壤中的迁移性; 其次,借助植物体内有机硫化合物的合成间接影响镉在植物体内不同部位的迁移与积累。目前硫对土壤-植物系统中镉迁移积累影响的研究结果不尽一致,两种元素的相互作用存在多向性和复杂性,这可能与土壤环境条件、植物根际微域差异等因素有关,且相关综述性的工作较少。因此,本研究综合国内外相关研究,介绍了硫与镉在土壤-植物系统中的交互作用,并分析了硫影响下镉在土壤-植物系统中迁移累积的相关机制及成因,为硫素及其化合物应用于重金属镉污染农用地土壤的治理及其安全利用提供参考。      

山东曹县地区土壤地球化学特征

山东省曹县地区土壤地球化学调查是按浅层土壤样品1点/4 km~2,深层土壤样品1点/16 km~2。测试N,P,K,Cu,Zn,B,Mo,Mn,F,As,Hg,Pb,Cr,Cd等14种指标。在统计这些指标的表层、深层土壤地球化学特征参数的基础上,对其与世界、全省同类参数的差异进行了分析,并分析了区内表层、深层土壤元素含量的相关性,认为该区表层土壤元素含量的显著特征是高F而低P,Zn,Mo。大部分元素在表层土壤中的含量继承了土壤母质的成分特征,但N,P,F,Hg等受人为活动和污染源的作用在表层土壤中明显富集。     

BIOCHEMICAL CHANGES DURING DEVELOPMENT OF EGGS AND YOLK-SAC LARVAE OF HERRING AND PLAICE

Changes in quantities of water, sodium, potassium, lipid and protein were compared in developing eggs and yolk-sac larvae of herring dupes harengus L., a species with demersal eggs, and plaice Pleuroncctcs platessa L., a species with pelagic eggs. The principal difference between the two species was the occurrence in herring, but not in plaice of considerable increases in water content and in one or both of the above ions at three distinct stages: at fertilization,during the middle stage of egg development, and in the days immediately after hatching. Newly hatched larvae of the two species differed greatly in water content because of the difference in mass and water content of the yolk, not in the water content of the rest of the body. In herring, there were increases in sodium and potassium which coincided broadly with the increase in water content. These differences are related to the gradual acquisition of buoyancy by herring during this period, comparable with the buoyancy conferred on plaice eggs a     

塔里木盆地库车坳陷东部上三叠统—中侏罗统物源特征及其地质意义

根据砂岩岩石薄片、石英阴极发光和重矿物组合分析,结合沉积构造及地震解释成果,对塔里木盆地库车坳陷东部上三叠统—中侏罗统物源体系及其演化进行详细分析,确定了物源方向及母岩性质。结果表明:塔里木盆地库车坳陷东部上三叠统—中侏罗统物源主要来自北部南天山造山带物源区,以岩浆岩和变质岩母岩为主,兼有少量沉积岩物源的影响。其中,塔里奇克组砂岩中陆源碎屑岩岩屑含量较高,阴极发光条件下不发光石英含量较高,重矿物组合具有高锆石、白钛矿和磁铁矿含量以及低石榴子石含量的特征,母岩可能为上奥陶统—上三叠统早期沉积;阿合组及阳霞组砂岩中岩浆岩岩屑含量升高,重矿物组合以较高的石榴子石含量为特征,阴极发光条件下石英主要为蓝紫色及棕褐色发光,其母岩主要来自二叠系及其下伏地层;克孜勒努尔组及恰克马克组砂岩中变质岩岩屑含量明显升高,石榴子石含量极高,阴极发光条件下棕褐色发光石英含量增多,表明变质岩母岩的影响增强。晚三叠世—中侏罗世,研究区物源区母岩演化具有明显规律性,即晚三叠世受较多沉积岩母岩影响,早侏罗世岩浆岩母岩供给增多,中侏罗世以变质岩母岩为主。晚三叠世,库车坳陷东部南天山造山带大幅抬升,导致大量变质岩母岩卷入造山带遭受剥蚀;早—中侏罗世,南天山造山带中段构造活动具有东西分段的特点,吐格尔明30团剖面以东早侏罗世砂岩率先具有高石榴子石含量的特点,而西部地区中侏罗世砂岩才大量出现石榴子石,表明南天山造山带中段的虎拉山及额尔宾山在早侏罗世隆升-剥蚀强烈,而哈尔克山在中侏罗世才进入强烈抬升期。     

20世纪90年代中国东西部土地利用变化时空特征分析

在覆盖全国的1km栅格土地利用本底与动态成分数据时空信息平台支持下,应用土地利用动态度模型,分别计算了全国及东西部地区土地利用一级类型的单一和综合动态度,并分析了土地利用动态度的空间格局。通过分析东西部土地利用类型变化特征和土地利用类型转换特征,对20世纪90年代中国东西部土地利用变化过程的时空特征进行了全面分析,揭示了东西部地区土地利用变化的时空规律。并对主要土地利用类型变化的原因进行了分析。     

Estimations of net primary productivity and evapotranspiration based on HJ-1A/B data in Jinggangshan city, China

Net primary productivity(NPP) and evapotranspiration(ET) are two key variables in the carbon and water cycles of terrestrial ecosystems.In this study,to test a newly developed NPP algorithm designed for HJ-1 A/B data and to evaluate the usage of HJ-1 A/B data in the quantitative assessment of environments,NPP and ET in Jinggangshan city,Jiangxi province,are calculated using HJ-1 A/B data.The results illustrate the following:(1) The NPP and ET in Jinggangshan city in 2010 both show obvious seasonal variation,with the highest values in summer and the lowest values in winter,and relatively higher values were observed in autumn than in spring.(2) The spatial pattern indicates that the annual NPP is high in the southern area in Jinggangshan city and low in the northern area.Additionally,high NPP is distributed in forests located in areas with high elevation,and low NPP is found in croplands at low elevations.ET has no significant north-south difference,with high values in the southeast and northwest and low values in the southwest,and high ET is distributed in forests at low elevations in contrast to low ET in forests in high-elevation areas and in cropland and shrub grassland in low-elevation areas.(3) Compared to the MODIS product,the range of HJ-1 NPP is larger,and the spatial pattern is more coincident with the topography.The range of HJ-1 ET is smaller than that of the MODIS product,and ET is underestimated to some extent but can reflect the effect of topography.This study suggests that the algorithm can be used to estimate NPP and ET in a subtropical monsoon climate if remotely sensed images with high spatial resolution are available.     

Temporal and spatial variations in extreme temperatures in the Qilian Mountains-Hexi Corridor over the period 1960-2013

Based on daily maximum and minimum temperatures at 18 meteorological stations in the Qilian Mountains and Hexi Corridor between 1960 and 2013, temporal and spatial variations in extreme temperatures were analysed using linear trends, ten-point moving averages and the Mann-Kendall test. The results are as follows: The trends in the majority of the extreme temperature indices were statistically significant, and the changes in the extreme temperatures were more obvious than the changes in the extreme values. The trends were different for each season, and the changes in rates and intensities in summer and autumn were larger than those in spring and winter. Unlike the cold indices, the magnitudes and trends of the changes in the warm indices were larger and more significant in the Hexi Corridor than in the Qilian Mountains. Abrupt changes were detected in the majority of the extreme temperature indices, and the extreme cold indices usually occurred earlier than the changes in the extreme warm indices. The abrupt changes in the extreme temperatures in winter were the earliest among the four seasons, indicating that these temperature changes were the most sensitive to global climate change. The timing of the abrupt changes in certain indices was consistent throughout the study area, but the changes in the cold indices in the Hexi Corridor occurred approximately four years before those in the Qilian Mountains. Similarly, the changes in the warm indices in the western Hexi Corridor preceded those of the other regions.