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Geochronology of Yanshanian Magmatism and Metamorphism in the Hinterland of the Dabie Mountains and Their Geologic Implications

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Acta Geologica Sinica(English Edition) 1992年第2期66卷 155-163,222页

作者： chen tingyu Niu Baogui Liu Zhigang Fu Yunlian Ren Jishun institute of {3., chinese academy of Geological sciences, beijing institute of geology Chinese Academy of Geological Sciences Beijing

A strong tectono-magmatic thermal event has been revealed by field observations of granitic, migmatiticand metamorphic rocks in the hinterland of the Dabie Mountains. K-Ar, Ar-Ar and Rb-Sr determinationsshow that the event took place 13.-117 Ma ago (Yanshanian). Contemporaneously, a southwestwardthrust-type ductile shearing at multiple levels occurred in the lower crust or at even deeper levels, suggestingthat the Dabie Mountains region was still under the influence ot strong continent-continent overlappingtectonism of the Yangtze block under the Sino-Korean block at depth. Metamorphic rocks of amphibolitefacies, migmatites and deep structural deformations resulting from this tectonothermal event are now exposedto the surface. The present features of the Dabie Mountains thus have appeared only since ca. 100 Ma B.P. Theblock composed of the Dabie Group is not an uplift or shield which would have undergone a long-continuederosion.

关键词： Geochronology of Yanshanian Magmatism and Metamorphism in the Hinterland of the Dabie Mountains and Their Geologic Implications

SOME PROBLEMS ON THE TECTONICS OF SOUTH china

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chinese Science Bulletin 1986年第11期31卷 751-754页

作者：任纪舜陈廷愚刘志刚牛宝贵刘凤仁 institute of geology Chinese Academy of Geological Sciences Beijing institute of geology Chinese Academy of Geological Sciences Beijingrom the autumn of 1981 to the winter of 1984 some geological investigations were conducted in Hunan Jiangxi Fujian Guangxi and Guangdong in research on the tectonic problems of South China and some new knowledge was acquired.This paper is a preliminary report and will be complemented later as various analyses and studies are now in progress at laboratory.

From the autumn of 1981 to the winter of 1984, some geological investigations were conducted in Hunan, Jiangxi, Fujian, Guangxi and Guangdong in research on the tectonic problems of South china, and some new knowledge was *** paper is a preliminary report and will be complemented later as various analyses and studies are now in progress at laboratory.

关键词： Jiangxi Fujian Guangdong Hunan preliminary tectonic autumn winter hasbeen Taiwan

澜沧江——湄公河流域干旱趋势及其对生态系统碳固定的影响

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地理学报 2024年第3期79卷 747-764页

作者：陈世亮李霞钱钊晖王绍强王苗苗刘侦海李卉夏烨赵紫祺李亭谕朱彤彤陈璇蒋赟浩谷鹏中国地质大学(武汉)地理与信息工程学院区域生态过程与环境演变湖北省重点实验室武汉430074 自然资源部国土碳汇智能监测与空间调控工程技术创新中心武汉430074 生态环境部对外合作与交流中心北京100035 中国地质大学(武汉)生物地质与环境地质国家重点实验室武汉430074 中国科学院地理科学与资源研究所中国科学院生态系统网络观测与模拟重点实验室北京100101 福建省农业科学院数字农业研究所福州350000

全球变暖导致干旱事件频发,强度不断增大,对陆地生态系统碳收支产生了重大影响。本文评估了2000—2019年澜沧江—湄公河(澜湄)流域的干旱趋势,并通过标准化异常指数(SAI)、标准化降水蒸散指数(SPEI)、潜在蒸散(PET)、饱和水汽压差(VPD)... 详细信息

全球变暖导致干旱事件频发,强度不断增大,对陆地生态系统碳收支产生了重大影响。本文评估了2000—2019年澜沧江—湄公河(澜湄)流域的干旱趋势,并通过标准化异常指数(SAI)、标准化降水蒸散指数(SPEI)、潜在蒸散(PET)、饱和水汽压差(VPD)和土壤水分(Soil_w)评价了干旱对该流域净生态系统生产力(NEP)的影响。结果表明:①2000—2019年澜湄流域向暖干化发展,主要受降水减少的影响,近1/4的区域遭受了中度以上干旱,其中2009—2016年间干旱事件频发,干旱热点地区位于澜沧江上游和湄公河中下游地区;②尽管澜湄流域碳汇整体上随着气候变暖而增加,但干旱年份植被光合作用降低,生态系统呼吸增加,导致2005年、2010年和2019年湄公河流域生态系统碳源汇发生转变,其中2010年干旱使得GPP减少5.68%,生态系统呼吸增加3.15%,NEP呈现重度异常;③干旱对流域NEP普遍具有滞后效应,整体滞后时间为1~4个月,面积占比为57.82%;④不同水文气候要素对NEP的影响表现出显著的空间差异,其中澜湄流域NEP与VPD整体呈负相关,云南省、缅甸西部、柬埔寨和越南南部的NEP与SPEI呈正相关,而青藏高原NEP主要受到土壤干旱的影响。干旱对澜湄流域生态系统碳固定的影响存在显著的空间异质性,量化干旱对碳固定的影响可以为气候变暖背景下澜湄流域不同地区的生态管理提供参考。

关键词：干旱固碳速率净生态系统生产力澜湄流域标准化降水蒸散指数地理加权回归

Quaternary Climate and Environment in the Lop Nur,Xinjiang

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Acta Geologica Sinica(English Edition) 2000年第2期74卷 273-278页

作者： WANG Mill PU Qingyu LIU chenglin chen Yongzhi Geological Society of china 26 Baiwanzhuang Rd.Beijing 100037 institute of Mineral Deposits Chinese Academy of Geological Sciences26 Baiwanzhuang Rd.Beijing 100037

Since the middle Early Pleistocene (1.20 Ma B.P.), the desert steppe climate and environment have predominated in the Lop Nur area, Xinjiang, characterized by warm humid epochs interrupted by dry cold intervals. The grain-size and magnetic susceptibility curves record 3. climatic oscillations, each with a ca. 40 ka cycle, in the area since 1.2 Ma B.P., which reflects the controlling effects exerted by the astronomic factor on the environment. The Quaternary sedimentary environment in the Lop Nur gradually changed from a fresh lake through a brackish lake to a saline lake, showing a spiral evolution, and finally it evolved into a playa.

关键词： Lop Nur Quaternary palaeoclimate sedimentary environment sporopollen

Geological Map of the People＇s Republic of china （1：2 500 000）

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Episodes 2006年第2期29卷 119-122页

作者： DING, Xiaozhong chen, Keqiang HUANG, Chongke YE, Tianzhu institute of geology chinese {3. of Geological sciences 26 Baiwanzhuang Dajie Beijing 100037 CHINA institute of geology chinese {3. of Geological sciences Beijing 100037 CHINA china Geological Survey beijing 100011 china

Introduction The Geological Map of the People＇s Republic of china in chinese and English versions was published by SinoMaps Press in 2004, at the scale of 1：2 500 000. It includes eight sheets. The chief compiler is Huang Chongke, and the associate chief compilers are Ye Tianzhu, chen Keqiang, Wu Kuanlian, Ji Xiaoyan, Gao Zhenjia, Qian Dadu, Tian Yuying, He Yongxiang, Zhang Qinghe, Cao Banggong, Li Long, Shao Heming, Wang Yongqin, Yang Minggui, Zhang Zhongwei, Yao Dongsheng and Zheng Jiankang. More than 100 geologists, cartographers and computer mapping experts took part in the compilation of the map.

关键词：地质图中国比例主要特征

A review of geoanalytical databases

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维普期刊数据库

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Acta Geochimica 2019年第5期38卷 718-733页

作者： Yutong He Yang Bai Di Tian Li Yao Runlong Fan Pengfei chen College of Instrumentation and Electrical Engineering Jilin UniversityNo.93& West Democracy StreetChangchunJilinChina College of Earth sciences Jilin UniversityNo.938West Democracy StreetChangchunJilinChina institute of geology Chinese Academy of Geological SciencesNo.26Baiwanzhuang Street.Beijing 100037China The 41st Research institute CETC QingdaoChina

Geoanalytical data provide fundamental information according to which the Earth's resources can be known and exploited to support human life and *** amounts of manpower and material and financial resources have been invested to acquire a wealth of geoanalytical data over the past 40 ***,these data are usually managed by individual researchers and are preserved in an ad hoc manner without metadata that provide the necessary context for interpretation and data integration *** this scenario,fewer data,except for published data,can be reutilized by geological *** geoanalytical databases have been constructed to collect existing data and to facilitate their *** databases are useful tools for preserving,managing,and sharing data for geological research,and provide various data repositories to support geological *** these databases are dispersed and diverse,it is difficult for researchers to make full use of *** contribution provides an introduction on available geoanalytical *** database content can be made accessible to researchers,the ways in which this can be done,and the functionalities that can be used are illustrated in ***,constraints that have limited the reutilization of geoanalytical data and creation of more advanced geoanalytical databases are discussed.

关键词： Database Geochemistry geology Geoanalysis Information system

Introduction of the beijing SHRIMP Center (National Science and Technology Infrastructure)

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china geology 2018年第3期1卷 455-456页

作者： chen WANG chinese Acad Geol Sci Inst Geol Beijing SHRIMP Ctr 26 Baiwanzhuang Rd Beijing 100037 Peoples R China

The beijing SHRIMP Center (BSC) is one of the National Science and Technology Infrastructures,jointly recognized by the Ministry of Science and Technology and the Ministry of Finance of *** was established in December of 2001 and is incorporated into the institute of geology,{3. Geological Survey in *** major objectives of the BSC are to undertake research in geochronology and cosmochronology,the formation and early history of the solar system and the Earth and tectonic evolution of orogenic *** BSC also develops Earth sciences related instruments and related new dating techniques and methods.

关键词： Introduction beijing SHRIMP Center National Science