《县市级变更调查软件》在国土部门应用解析

本软件是在菜单环境下工作,包括如下几大功能：１．系统维护２．建立电子台帐３．变更调查记录表４．变更后台帐５．打印输出６．台帐结转为用户设计了满意舒适的工作环境,对于一位不懂计算机的工作人员来讲,只用很短的时间,就可掌握软件使用的全过程。以一种十分便捷和廉价的方法,为国土工作者提供了一秒钟量算一个复杂图斑面积的强大能力。电子台帐的建立可进行查询、整理、归集和打印,并且很方便地进行当年变更调查内业工作,形成变更后台帐,并轻而易举地结转为下一年度的变更前台帐库,以满足国家局变更调查工作的全部要求。     

新疆玛纳斯湖沉积物氧同位素记录的古气候信息探讨──与青海湖和色林错比较

内陆封闭湖泊自生碳酸盐氧同位素组成与大气降水同位素组成、空气相对湿度和地面气温这三个参数相关。我国季风带的青海湖与色林错的δ~(18)O曲线非常相似,说明古气候变化受相同因素驱动。在10500～9500aB．P．的末次冰期向全新世的过渡期,这两个湖泊的δ~(18)O值大幅度下降,这是夏季风雨水的低δ~(18)O值的缘故。属于西风带的玛纳斯湖和季风带的青海湖的δ~(18)O曲线基本上是对称的。大约9500～4000aB．P,图形由对称转变为相似,据此推论当时夏季风的影响范围可能达到新疆北部。     

上新世湖相纹泥及其环境信息与时间标尺记录

纹泥反映了湖相沉积物中特有的沉积韵律,是气候的季节变化和年际变化的产物。山西榆社张村地区上新世晚期的湖心相沉积中发育了极为完好的纹泥剖面。纹泥深浅相间形成清晰的纹理,分别代表夏秋和冬春。一深一浅组成一对,代表一年。纹泥层的单层厚度平均为0．12～0．25mm／条,薄者＜0．1mm／条,厚者可达0．3mm／条。暗色纹泥层的厚度大于浅色纹泥层。暗色纹泥的有机质含量丰富,木本植物孢粉占优势,同时CaO的含量低;浅色纹泥恰好相反。湖相纹泥具有建立高分辨率时间标尺和环境演化序列的特殊优越条件。     

A multiproxy climate record from a raised bog in County Fermanagh,Northern Ireland: a critical examination of the link between bog surface wetness and solar variability

A proxy climate record from a raised bog in County Fermanagh, Northern Ireland, is presented. The record spans the interval between 2850 cal. yr BC and cal. yr AD 1000 and chronological control is achieved through the use of tephrochronology and ¹⁴C dating, including a wiggle‐match on one section of the record. Palaeoclimatic inferences are based on a combination of a testate amoebae‐derived water table reconstruction, peat humification and plant macrofossil analyses. This multiproxy approach enables proxy‐specific effects to be identified. Major wet shifts are registered in the proxies at ca. 1510 cal. yr BC, 750 cal. yr BC and cal. yr AD 470. Smaller magnitude shifts to wetter conditions are also recorded at ca. 380 cal. yr BC, 150 cal. yr BC, cal. yr AD 180, and cal. yr AD 690. It is hypothesised that the wet shifts are not merely local events as they appear to be linked to wider climate deteriorations in northwest Europe. Harmonic analysis of the proxies illustrates statistically significant periodicities of 580, 423–373, 307 and 265 years that may be related to wider Holocene climate cycles. This paper illustrates how the timing of climate changes registered in peat profiles records can be precisely constrained using tephrochronology to examine possible climatic responses to solar forcing. Relying on interpolated chronologies with considerable dating uncertainty must be avoided if the climatic responses to forcing mechanisms are to be fully understood. Copyright © 2007 John Wiley & Sons, Ltd.     

分布式社区口腔医疗信息管理系统设计

利用SQL Server和VB设计分布式社区口腔医疗信息管理系统,建立牙科电子病历,实现远程医疗信息共享和IC卡一卡通服务,改善口腔医疗服务水平.     

我国海洋底栖猛水蚤目两个新记录种

通过对2008 年5 月在江苏平岛潮间带采集的砂质沉积物进行离心提取, 经形态分类学方法 鉴定发现底栖猛水蚤目两个新记录种, 濑户叶足猛水蚤Phyllopodopsyllus setouchiensis Kitazima, 1981 和扎哈美猛水蚤 Ameira zahaae Karanovic & Cho, 2012, 分别隶属于矩头猛水蚤科 Tetragonicipitidae Lang, 1948 和美猛水蚤科 Ameiridae Boeck, 1865.其中, 濑户叶足猛水蚤目前仅在 砂质潮间带环境中发现。扎哈美猛水蚤与韩国海域发现的种形态基本一致。     

Last glacial terrestrial vegetation record of leaf wax n-alkanols in the northern South China Sea: Contrast to scenarios from long-chain n-alkanes

Long-chain n-alkanols and n-alkanes in core sediments from the northern South China Sea (SCS) were measured to make a comparison during terrestrial vegetation reconstruction from ~42 ka to ~7 ka. The results showed that terrestrial vegetation record from long-chain n-alkanes matched well with previous studies in nearby cores, showing that more C₄ plants developed during the Last Glacial Maximum (LGM) and C₃ plants dominated in the interglacial period. However, these scenarios were not revealed by terrestrial vegetation reconstruction using long-chain n-alkanols, which showed C₃ plant expansion during the LGM. The discrepancy during the interglacial period could be attributed to the aerobic degradation of functionalized long-chain n-alkanols in the oxygen-rich bottom water, resulting in poor preservation of terrestrial vegetation signals. On the other hand, the different advantages of functionalized n-alkanols and non-functional n-alkanes to record local and distal vegetation signals, respectively, may offer a potential explanation for the contradiction during the LGM when the SCS was characterized by low-oxygen deep water. Nevertheless, large variations on n-alkyl lipid compositions in C₃/C₄ plants could play a part in modulating sedimentary long-chain n-alkanols and n-alkanes toward different vegetation signals, thereby suggesting that caution must be taken in respect to the terrestrial vegetation reconstruction using long-chain n-alkanes and long-chain n-alkanols.     

南海深海鱼类一新记录种——鞭尾鱼

2016年11月至2020年7月在南海海域采集管眼鱼6尾,经形态特征鉴定为月鱼目、鞭尾鱼科、鞭尾鱼属(Stylephorus)、鞭尾鱼(Stylephorus chordates)。鞭尾鱼主要鉴别特征为：体长,侧扁。眼大,呈望远镜状,朝前或朝上。吻小,管状,口有特别大的伸缩能力。背鳍从颈背部延伸至尾鳍基部。尾鳍分明显的上叶和下叶,下叶2鳍条极度延长。鞭尾鱼在南海海域的发现是该科、该属、该种鱼类在中国海域的首次纪录。     

Short- and long-term response of phytoplankton to ENSO in Prydz Bay,Antarctica: Evidences from field measurements,remote sensing data and stratigraphic biomarker records

The study provides one of the first lines of evidence showing linkages between Antarctic phytoplankton abundance and composition in response to ENSO, based on historical reconstruction of sediment biomarkers. In addition to sediment biomarkers, field measured and remote sensing data of phytoplankton abundance were also recorded from Prydz Bay, Eastern Antarctica. Com-munity structure of field measured phytoplankton showed significant El Ni？o/La Ni？a-related succession during 1990 to 2002. In general, the number of algae species decreased during El Ni？o and La Ni？a years compared to normal years. Austral summer monthly variation of remotely sensed chlorophyll-a （Chl-a）, particulate organic carbon （POC）, and sea surface temperature （SST） indicated that ENSO impacted the timing of phytoplankton blooms during 2007 to 2011. Phytoplankton blooms （indicated by Chl-a and POC） preceded the increases in SST during El Ni？o years, and lagged behind the SST increases during La Ni？a years. Stratigraphic record of marine sedimentary lipid （brassicasterol, dinosterol and alkenones） biomarkers inferred that the proportions of different algae （diatoms, dinoflagellates and haptophytes） changed significantly between El Ni？o and La Ni？a events. The relative proportion of diatoms increased, with that of dinoflagellates being decreased during El Ni？o years, while it was reversed during La Ni？a years.     

Sediment records of environmental changes in the south end of the Zhejiang-Fujian coastal mud area during the past 100 years

Previous studies carried out in the East China Sea （ECS） mud area focused on long-term environmental changes in sedimentary records during the Holoeene, especially during the mid-Holocene high-stand water levels period. These results indicate that sensitive grain size groups can be used as a sedimentary proxy to reconstruct the evolution of the East Asian Winter Monsoon （EAWM）. The studies have been carried out mainly in the northern and middle portions of the Zhejiang-Fujian coastal mud, however, similar research in the southern portion and the comparison between sedimentary proxy and modern measured data of EAWM are lacking. In this paper, we focused on a sedimentary record of the past 100 years with an enhanced resolution of 1.8 years. Investigations of the southern end of the Zhejiang-Fujian coastal mud area were conducted on the basis of 21~Pb chronology, grain-size analysis and chemical element analysis. The correspondence between the mean grain size （Mz） of sediment sensitive grain size and the measured EAWM was confirmed for the first time. We found that during the recent 100 years, the variation of the mean grain size of the sensitive population in the southern portion of the Zhejiang-Fujian mud was mainly controlled by the EAWM intensity changes; and not directly related to changes in the sediment discharge from Datong station of the Changjiang River （DTSD）. Finally, recent changes in the content of heavy metals in study area reflect the impact of human activities on the environment.