信息化背景下开放式测绘实训教学研究与探索

实验教学是培养学生成为高素质人才必不可少的环节。本文针对当前测量实验教学过程存在的教师主导、学生学习兴趣不高、实验教学效果不理想等问题,积极探索建立以学生能力培养为核心的开放实验教学观念,在开放式测量实验教学过程中,基于CBE理念优化层次化开放实验内容体系,实施基于教学资源平台、实验管理平台和大数据分析的开放实验教学模式和教学诊改,并经过实践证明“互联网+教育”背景下开放式实验教学有利于兼顾学生全面与个性发展,有利于提高学生的整体素质。     

基本农田保护监测技术路线与方法探索

2023年中央一号文件提出“加强耕地保护和用途管控,探索建立耕地种植用途管控机制,明确利用优先序,加强动态监测,有序开展试点”的要求。该文根据文件的要求,基于高分辨率遥感影像,利用地理国情监测、国土变更调查、季度遥感影像变化监测等数据,设计了基本农田保护监测技术路线和方法,改变了以往农田保护管理工作技术难度大、工作量大、效率低的状态,不仅提升了基本农田保护监管工作的效率和精准度,而且满足了耕地保护和用途管控对空间信息的需求。基本农田保护监测成果数据的应用为客观评价农田保护管理的成效提供了技术支撑和科学依据。     

大旅游产业及其发展的影响和效益——以甘肃省为例

大旅游的产业特性决定了其经济、社会和生态等方面影响的广泛性和效应的综合性。本文论述了大旅游产业的内涵、特征和产业体系。以甘肃省为例,从发展大旅游产业的角度,通过理论和实证两方面,对大旅游产业促进欠发达地区优势资源开发和资源替代、产业替代的作用及其经济、社会和生态效益进行了评估;提出了大旅游产业是欠发达地区新的经济增长点,扩大就业的有效途径和重要渠道,城市化和可持续发展的新型驱动力等结论。     

Geochemistry and chronology of Se＇ ertengshan greenstone, Inner Mongolia

This paper deals with the meta-mafic volcanic rocks of the Gongyiming iron deposit at Baotou, Inner Mongolia. The major and trace elements and REE data indicate that the meta-mafic volcanic rocks occurred in the environment similar to a modern continental rift. Sm-Nd and Rb-Sr isotopic studies indicated that the meta-basic rocks were formed during the Early Neoarchean from 2800 Ma to 2900 Ma and reworked during the Late Neoarchean (2500 Ma) by metamorphism. Because of the separation of the North China Craton from the Siberia Craton during the Middle Proterozoic (1600 Ma), the Rb-Sr systematics of the rocks has been changed. The Se‘ ertengshan greenstone seems to occur during the Middle Archean. A stable continental crust may have existed during the Paleoarchean.     

Geochemistry and chronology of Se’ertengshan greenstone, Inner Mongolia

1Introduction TheSe’ertengshanregionissituatedonthenorth ernmarginoftheNorthChinaContinentalPlatform.In thelongpastdifferentresearchershaddifferentopin ionsonthemetamorphicseriesinthisregion.Regional geologicalsurvey(1∶200000onscale)(Compiling GroupofStratigraphicTablesfortheInnerMongolia AutonomousRegion,1978)hasdividedthemetamor phicseriesintheregionstudiedintotheWulashan Group,theWutaiGroup,theErdaowaGroupandthe SanhemingGroup.AccordingtotheGeologicalRe searchTeamofInnerM…     

撞击事件对古环境的影响——来自ODP1144站A孔样品的证据

本文通过对ODP1144站A孔BM界线附近样品中微玻璃陨石的挑选和研究,确定在中更新世曾发生过地外物体撞击地球的灾变事件。样品中浮游有孔虫壳体碳氧同位素的对比研究表明,在微玻璃陨石事件发生的后期,曾发生了浮游有孔虫壳体碳氧同位素组成的变化,表现为^δ13 C值的降低和^δ18 O值的增加。文中还探讨了其形成的原因。     

KREEP Rocks

KREEP rocks with high contents of K, REE and P were first recognized in Apollo-12 samples, and it was confirmed later that there were KREEP rock fragments in all of the Apollo samples, particularly in Apollo-12 and -14 samples. The KREEP rocks distributed on the lunar surface are the very important objects of study on the evolution of the moon, as well as to evaluate the utilization prospect of REE in KREEP rocks. Based on previous studies and lunar exploration data, the authors analyzed the chemical and mineral characteristics of KREEP rocks, the abundance of Th on the lunar surface materials, the correlation between Th and REE of KREEP rocks in abundance, studied the distribution regions of KREEP rocks on the lunar surface, and further evaluated the utilization prospect of REE in KREEP rocks.     

西藏措勤盆地下二叠统—下三叠统碳酸盐岩牙形石生物地层划分

措勤盆地下二叠统昂杰组之上广泛发育碳酸盐岩沉积,前人先后对这套碳酸盐岩进行了解体,建立了多个地层单元。本次报道剖面为盆地中的二叠系-三叠系的连续整合沉积剖面,通过牙形石研究在这套碳酸盐岩中识别出了下二叠统-下三叠统的5个牙形石带,即：Mesogondolella siciliensis-Sweetognathodus subsymmetricus带、Mesogondolella idahoensis带、Jingondolella aserrata带、Clarkina meishanensis带、Neospathodus dieneri带,并将下拉组时代修订为下二叠统空谷期-中二叠统末。     

西藏尼木地区双壳类化石的发现及其对相关地层的厘定

正1研究目的(Objective)尼木地区在大地构造位置上位于冈底斯岩浆弧南缘中部,是新特提斯洋岩石圈长期俯冲导致的中生代岩浆作用的产物,而且在印度—欧亚大陆碰撞造山过程中又叠加了强烈的新生代岩浆作用,呈近东西向展布。南侧紧临雅鲁藏布江结合带,在岩浆弧中残留一套与新特提斯洋俯冲有关的中生代桑日群火山-沉积地层及前寒武纪念青唐古拉群。