四川盆地南部嘉陵江组烃源研究

四川盆地南部地区嘉陵江组中具有较大天然气储量的气井在天然气组分上与储量较小的微气井有明显差异,前者天然气以高成熟的甲烷为主.烃类碳同位素特征证明天然气来源于深层二叠系高熟-过熟的烃源岩.地球化学指标反映出嘉陵江组基本不具备生成大量烃类的条件.作者将向下断达二叠系或更深、向上断达嘉陵江组的断层称为嘉陵江组气藏的"烃源断层".烃源断层为二叠系或更深层烃源岩中的天然气向嘉陵江组储层中运移提供了通道,是嘉陵江组天然气富集的关键要素之一.     

浙江南部外海温度分布特征

利用2006年5月、9月、11月、2月在浙江南部外海26°00'～28°30'N,121°44'～125°44'E海域测得温度数据资料进行分析,结果表明:表层平均水温:春季23.40℃,夏季25.85℃,秋季23.41℃,冬季17.48℃;底层平均水温:春季17.26℃,夏季20.78℃,秋季22.27℃,冬季18.36℃。垂直分布上,春季在50～80m存在0.11℃/m的温跃层,夏季在30～70m处温跃层强盛,约为0.20℃/m,秋季0～10m处有逆温层,50～70m处存在0.19℃/m的温跃层,冬季均匀层增厚,温跃层消失。     

Impact of land surface degradation in northern China and southern Mongolia on regional climate

Clear evidence provided by the singular value decomposition (SVD) analysis to the normalized difference vegetation index (NDVI) and precipitation data identifies that there exists a sensitive region of vegetation-climate interaction located in the transitional zone over northern China and its surrounding areas, where the vegetation cover change has the most significant influence on summer precipitation over China.““ Comparison of reanalysis data with station data provides a good method to assess the impacts of land use change on surface temperature, and the most obvious contribution of land use change may be to lead to notable warming over northern China in the interdecadal time scale. Based on the new statistical results, a high-resolution regional integrated environmental model system (RIEMS) is employed to investigate the effects of land surface degradation over the transitional zone and its surrounding areas (northern China and southern Mongolia) on the regional climate. Land degradation results in the decreases in precipitation over northern and southern China, and the increase in between, and increased and decreased temperature over vegetation change areas and the adjacent area to the south, respectively. Not only would it change the surface climate, but also bring the significant influence on the atmospheric circulation. Both the surface climate and circulation changes generally agree to the observed interdecadal anomalies over the last five decades. These integrated statistical and simulated results imply that land surface degradation over the transitional zone in northern China and its surrounding areas could be one of the main causes responsible for the climate anomalies over China, especially the drought over northern China.     

南岭南部北江源地鱼类区系及东洋区北侧界的划分

在浈水上游产江源地亚历河采集到鱼类40种和亚种,分隶于5月13科31属,以骨鳔类为主,其中鲤形目种类占67．5％,鲤科占鲤形形目的70．49％,既有老第三纪原始类群的的裔类,又有南亚暖水性鱼类,东陂拟腹吸鳅,侧条光唇鱼,宽鳍Su等适应山溪急流生活的生态类群占明显优势,浈水源地的鱼类区秒东洋区的特征比较明显,根据Ba亚科占鲤科类31．58％,以及东洋区鱼类占全部种类的36．24％,而鲂鳊、鲴、鲢、雅罗鱼五亚科种类仅占26．33％等特征,认为将南岭作为全北区与东洋区的分界线更符合客观事实。     

Position of South China in configuration of Neoproterozoic supercontinent

ConfigurationandevolutionofNeoproterozoicsu-percontinentandthepositionofSouthChinawithinithavebeenveryimportanttargetsinearthsciencesconcerningmanyforefronttopicsofgeneralinterest.InthecommonreconstructionofthesupercontinentRodinia,SouthChinawaslocatedbetweenAustraliaandLaurentia,andthusliesinthecenterofthesupercontinentandsoutheastofAus-tralia[1].Accordingtothenewpaleomagneticandgeo-chronologicaldataforthe~800MaXiaofengdykeinYi-changaswellasexistingdata,Lietal.[2]suggestthatRodiniawouldp…     

青海省野生动物实验动物化研究进展

青海省地处青藏高原，平均海拔3000米以上，具有高寒缺氧，年平均气温低，干燥等特点．其幅原辽阔，野生动物资源丰富，由于所处的地理位置和严酷的自然条件而形成了许多特有的自然动物群，可开发的野生实验动物资源有免形目中高原鼠兔，柴达木灰尾免；啮齿目中的喜马拉雅旱獭，三趾跳鼠，中华酚鼠；食肉目中的藏英等，都是理想的实验动物化研究对家其中高原鼠兔和喜马拉雅旱獭作为新发掘的实验动物已引起国内外关注。我省科研工作者自八十年代就对野生高原鼠兔，喜玛拉雅旱獭进行饲养，驯化、繁殖以及生物学特性研究，近年来对藏英这一中国…     

青海东部黄河谷地经济带开发战略构想

在分析青海东部黄河谷地经济带优势资源基础上，探讨该经济开发的战略思路，从本区实际出发，提出了开发应遵循的原则，其开发战略，以水电为龙头，发展高耗能，高附加值的有色冶金、盐化工业，同时大力发展农业和旅游业，合本经济成为支援青南经济开发的基地，并为实现战略目标提出措施与对策。     

青海旅游资源的定量评价

本文在采用国内外有关旅游资源定量评价方法基础上,结合青海的实际,对省内23处风景旅游地进行了定量评价,为这些旅游地的开发规模,开发程序,吸引能力,开发潜力提供科学依据。     

青海省地貌区划的初步研究

本文依据地貌地域组合的共同性原则,并运用主导标志法,对青海地貌进行分区.初步形成了全省的地貌区划系统,即三个一级区和十二个二级区.     

青海省河南县天然林资源保护探析

文中对位于青海省河南县三江源缓冲地区的天然林资源现状进行了分析，并结合实际情况提出了保护该地区天然要资源的对策和建议。