鄱阳湖流域史前人类遗址时空分布及其环境响应（英文）

The temporal-spatial geographic distribution of archaeological sites and its feature between 10.0–2.8 ka BP(ka BP= thousands of years before 0 BP, where "0 BP" is defined as the year AD 1950) were determined, based on GIS spatial analysis in the Poyang Lake Basin. The relationship between geographic distribution of sites of different periods under subsistence existence of ancient civilizations, climate and environmental change was investigated. The results revealed numerous archaeological sites of the Neolithic Age(10.0–3.6 ka BP). The sites were mainly located in the northern part of the Poyang Lake Basin, a hilly and mountainous area with many river terraces suitable for the development of human civilization. The number of archaeological sites rapidly increased during the Shang and Zhou dynasties(3.6–2.8 ka BP) and spread widely on the floodplains of the middle and lower reaches of Ganjiang River and onto the west, south, and southeast beach areas of the Poyang Lake. Holocene records of climate change suggested that it was possible that climate fluctuations had a great impact on human evolution in the study area. Before 3.6 ka BP, westward and northward expansion of Neolithic cultures in the Poyang Lake watershed occurred under the background of climate amelioration(becoming warmer and wetter). The ancient people lived in the hilly areas with high elevation. The simple mode of a fishing and gathering economy was mostly suited to this area in the early Neolithic Age. The scope of human activities was expanded and cultural diversity developed in the late Neolithic Age. However, with population growth and increasing survival pressure in a dry-cold climatic stage after 3.6 ka BP, this simple living mode had to be abandoned, and various forms of economy, the majority being agriculture, were developed on flood plains of the lower reaches of numerous rivers around Poyang Lake. This promoted flourishing of the Bronze culture of South China.     

中国海洋的珊瑚-珊瑚礁: 南海中央区珊瑚-珊瑚礁生物多样性特征

珊瑚是地球上最古老的原住民,具有近6×108年的发育史,弱势群居、喜温和原地长成是珊瑚的基本特征。作者介绍了珊瑚-珊瑚礁的基本特征,综述了跨十年调查的研究区珍贵照片资料和相关认识,指出中国是全球主要的珊瑚-珊瑚礁国家,地位举足轻重;珊瑚-珊瑚礁作为地球生物多样性的代表,造岛、固礁、护鱼、防护岛岸流失,形成南海四大群岛280余座岛、礁、滩、沙,所构建庞大海洋生态系统是无与伦比的海洋生态资源和寸土寸金的南海海洋国土。提出划分南海珊瑚-珊瑚礁为中央区和周缘区2个分布区,阐述了南海中央区珊瑚-珊瑚礁的基本特征,系统汇集报道了间隔10年2个科考航次调查在浅水礁盘浮潜、至20 m水深浅潜-深潜和礁盘及开展岛、礁、滩、沙地质调查的发现,包括科学定名46种六放石珊瑚和6种八放软珊瑚等成果,同时,收集了西沙、中沙、东沙和南沙群岛海域的相关调查航次珊瑚照片;进一步阐述了单体环礁和复合环礁的特征及分布,并进行了初步对比,指出永乐环礁是南海唯一一个真正的切合达尔文模式的环礁,也是环礁发展到最高阶段的产物,构成现代海洋珊瑚-珊瑚礁形成演化研究最好的天然实验室。     

Threat from above! Assessing the risk from the Tonghua high-locality landslide in Sichuan,China

Landslides - In tectonically active steep mountain belts, such as those in west Sichuan in China, frequent landslide disasters can occur during the rainy season. High-locality landslides often...     

绿色金融如何影响中国城市环境污染？——以雾霾污染为例

文章将绿色金融纳入环境规制的分析框架,以2016－2019年中国289个地级以上城市雾霾污染为例,使用空间杜宾模型探讨绿色金融、环境规制、产业结构、技术水平对雾霾治理的影响,侧重分析了绿色金融与其他因素的交互作用。结果表明：绿色金融具有空间溢出效应,本地绿色金融可以降低周边地区雾霾污染;绿色金融能够与环境规制协同互补,以优化产业结构、提升技术水平的方式促成雾霾治理。绿色金融的结构效应弱于环境规制,在中部地区并不显著;绿色金融的技术效应强于环境规制,能够激励不同地区技术创新。文章启示,绿色金融与环境规制能够相互增益,应建立区域间绿色金融合作机制,增强绿色金融的普惠性,助力区域产业转型和污染治理。     

分量质子旋进磁力仪定向方法的研究

根据分量质子旋进磁力仪补偿线圈电流允许误差 ,补偿线圈轴定向应满足的关系式和给出的允许误差 ,研究并给出了实现分量质子旋进磁力仪各定向标准的实用方法。     

地下结构对工程场地地震动场的影响

本文以日本神户市地铁大开站为工程背景,应用大型通用有限元ANSYS软件,分别建立了自然条件下的工程场地土层和建有地下车站结构的土层的二维有限元分析模型。计算了基岩一致地震动输入模式下2个土层模型的动力反应。通过将2个土层模型的动力反应进行比较分析,讨论了地下结构对工程场地地震动场的影响。分析结果表明,日本神户地铁大开站的存在对其邻近区域土层的地震反应有影响,但影响有限。     

U-Pb dating of scheelite,wolframite and apatite from the Woxi Au-Sb-W deposit,western Hunan Province and their geological significanceSCIEI北大核心CSCD

沃溪矿床位于湘西雪峰隆起区的转折部位,是该区金锑钨矿床的典型代表。该矿床成矿元素及成矿期次较为复杂,各成矿阶段的形成时代长期存在争议。本次研究在对沃溪矿床详细野外调查及岩相学观察的基础上,对深部中段矿体中的白钨矿、磷灰石及浅部中段矿体中的黑钨矿开展了U-Pb同位素分析。依据本次所获年龄数据,结合观察到的矿脉交切关系、矿物共生组合等特征,本文认为沃溪矿床除了加里东期成矿作用之外,还存在燕山期成矿作用。其中,白钨矿形成相对较早,成矿年龄为149.0±12Ma、144.8±1.7Ma、139.8±6.1Ma;黑钨矿与白钨矿同时生成(或稍晚),成矿年龄为137.8±3.9Ma、134.8±5.1Ma;自然金、辉锑矿主要在白钨矿、黑钨矿形成以后通过沉淀而成,且自然金在晚阶段(125.8±5.6Ma、123.8±4.6Ma)石英-碳酸盐脉中仍有少量产出。综合已有年代学资料推测,沃溪矿床可能在经历了加里东期陆内造山成矿作用之后,还经受了燕山期伸展构造背景下深部流体不同程度的叠加改造作用。而该矿床发现的矿脉原地破裂后被后期矿物胶结等现象,则指示其矿脉的形成与液压致裂作用有关,这种作用导致矿脉反复裂开-愈合,有利于成矿元素(尤其是金)的活化迁移和再富集沉淀。     

Short-Term Periodicity in Solar Mean Magnetic Field during Activity Maximum and Minimum Periods

The short-term periodicity in the solar mean magnetic field (SMMF) observed at the Wilcox Solar Observatory during the last four activity cycles is investigated by using Lomb?CScargle periodograms. Our results show that the SMMF has main periods of about 27, 13.5, and 9 days in both the maximum and minimum years of each activity cycle. The SMMF has the most dominant period of about 27 days during the activity maxima. However, during the activity minimum years the 13.5-day periodicity is the most significant, except for the minimum of 1984??C?1986. These results indicate that the distribution of active regions in the activity maximum years is quite different from that in the minimum years.     

依兰-伊通断裂新构造活动规律分析

作为郯庐断裂带北段主干的依兰-伊通断裂, 其新构造活动性与活动规律仍然存在不同的认识.本次工作通过详细的野外调查, 发现该断裂内活断层广泛存在, 由东、西两支北东走向的主干活断层构成, 沿着古近纪地堑边界断层发育.这些活断层主要呈破碎型结构, 多为逆右行平移活动.通过对这些活断层一系列实测擦痕反演应力场, 显示它们多是在东西向挤压中活动的, 而现今应力场转变为北东东-南西西向区域性挤压.依据本次野外观察与¹⁴ C定年, 并结合前人定年结果与近代地震分布, 表明依兰-伊通西支活断层的最新活动时代为全新世与晚更新世相间, 而东支活断层的最新活动时代主要为早-中更新世.依兰-伊通断裂内活断层显示了明显的差异性活动, 表现为西支的活动强度明显大于东支, 西支的最新活动时代皆晚于东支, 沿走向上活动性强、弱相间与最新活动时代不断变化, 以及近代地震活动不均一分布.它们沿走向上的分段性、差异性活动主要是因为被一系列北西向断层切断所致.     

新疆阿舍勒-冲乎尔地区泥盆纪相动力学研究

阿舍勒-冲乎尔火山沉积盆地是一个以火山岩并伴有陆源和内源沉积物的堆积场所,即该区泥盆纪地层是以事件作用的产物为其主要成分特点。显然,对其古地理的恢复、相的划分采用传统的相序分析方法是不合适的。作者认为要阐明该区泥盆纪的古地理面貌,必须在区域地层研究基础上,综合分析各种相标志和沉积物的特点,寻求它们的物理成因和地质成因解。在这一过程中,相的动力学分析显得尤为重要。本文在上述学术思想指导下,把本区泥盆纪的相分为成因相和环境相两大类,并对其中的微相进行了详细的阐述,从而为把沉积学的原理和方法应用了火山岩的搬运机制和堆积环境研究中提供了先期研究实例,同时为研究和恢复该区以至整个新疆北部泥盆纪的古地理格局打下了坚实的基础。