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资源环境核算:从国际经验到国内实践 总被引:2,自引:0,他引:2
自然资源资产核算历程表明,自然资源资产负债表同资源环境核算一脉相承.自然资源资产负债表不仅具有资源资产核算的共性,还具备区别于资产负债表及环境经济核算的个性;科学定位自然资源资产负债表的功能,不仅要正确理解我国生态文明体制改革赋予自然资源资产负债表的政策旨愿,还需认识到它在实施自然资源资产确权、调查、监测、用途管制、自然资源资产离任审计与生态环境损害责任追究等自然资源资产管理改革环节中的关键性作用. 相似文献
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“绿水青山就是金山银山”.党的十八大以来,以习近平同志为核心的党中央,遵循发展规律,顺应人民期待,彰显执政担当,接连推出一系列生态文明建设的顶层设计与战略部署.从党的十八大把生态文明建设纳入“五位一体”总体布局、提出“建设美丽中国”,到党的十九大强调统筹山水林田湖草系统治理,设立国有自然资源资产管理机构,生态文明建设的... 相似文献
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正近年来,为促进生态文明建设,实现我国"五位一体"的总体布局,党中央交给审计机关一项生态文明建设新任务——领导干部实行自然资源资产离任审计。这项工作针对地方各级党委领导干部任职期间,根据各地主体功能区定位,履行自然资源资产管理和生态环境保护责任情况进行审计评价,重点涉及土地资源、水资源、森林资源以及矿山生态环境治理、大气污染防治等领域,发现问题将对领导干部终身追责,并纳入领导干部离任审计结果报告,作为干部考 相似文献
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为更好地满足国民经济社会发展和生态文明建设、国防建设以及自然资源管理对地理信息更新服务日益提高的需要,多年来,国家基础测绘不断提升数据的丰富性、现势性以及可靠性,建立完善的适用于我国国情的基础地理信息更新技术与业务体系,管理体制与运行机制,实现了一年更新一次.本文主要针对国家基础测绘1∶50000地形数据更新的技术路线及流程、生产方法进行了总结和思考,并提出了今后如何开展的思路及建议,以期为1∶50000地形数据更新下一步的工作开展提供借鉴. 相似文献
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《International Journal of Digital Earth》2013,6(1):80-87
Abstract Cultures throughout the world are associating with the rivers. People depend upon the rivers and their tributaries for food, water, transport, and many other aspects of their daily lives. Unfortunately, human beings have not calculated the accurate lengths for the great rivers even today. The lengths of the rivers are very different in popular textbooks, magazines, atlases and encyclopedias, etc. To accurately determine the lengths of the principal rivers of the world, the combination of satellite image analysis and field investigations to the source regions is proposed in this paper. The lengths of the Nile, Amazon, Yangtze, Mississippi, Yellow, Ob, Yenisey, Amur, Congo and Mekong, with lengths over or close to 5000 km, were calculated using the proposed method. The results may represent the most reliable and accurate lengths of the principal rivers of the world that are currently achievable. 相似文献
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软科学这一术语是70年代在国外提出的.然而30多年以来,它在国外不仅未得到普遍的承认,而且对软科学的定义也还未能达成大体上一致的共识.而在改革开放后的中国,出于决策科学化和民主化的需要,经过一些领导人的提倡和支持,特别是通过1986年召开的软科学座谈会及1994年召开的全国软科学工作会议,软科学事业得到了蓬勃的发展.据初步统计,截止1998年底全国共有软科学研究机构1224个,研究人员32655人,初步形成了一支较为强大的研究队伍,并取得了数百项覆盖多个领域的研究成果,为支持各级各类的决策发挥了一定的作用. 相似文献
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Tobias Nilsson Benedikt Soja Kyriakos Balidakis Maria Karbon Robert Heinkelmann Zhiguo Deng Harald Schuh 《Journal of Geodesy》2017,91(7):857-866
The very long baseline interferometry (VLBI) Intensive sessions are typically 1-h and single-baseline VLBI sessions, specifically designed to yield low-latency estimates of UT1-UTC. In this work, we investigate what accuracy is obtained from these sessions and how it can be improved. In particular, we study the modeling of the troposphere in the data analysis. The impact of including external information on the zenith wet delays (ZWD) and tropospheric gradients from GPS or numerical weather prediction models is studied. Additionally, we test estimating tropospheric gradients in the data analysis, which is normally not done. To evaluate the results, we compared the UT1-UTC values from the Intensives to those from simultaneous 24-h VLBI session. Furthermore, we calculated length of day (LOD) estimates using the UT1-UTC values from consecutive Intensives and compared these to the LOD estimated by GPS. We find that there is not much benefit in using external ZWD; however, including external information on the gradients improves the agreement with the reference data. If gradients are estimated in the data analysis, and appropriate constraints are applied, the WRMS difference w.r.t. UT1-UTC from 24-h sessions is reduced by 5% and the WRMS difference w.r.t. the LOD from GPS by up to 12%. The best agreement between Intensives and the reference time series is obtained when using both external gradients from GPS and additionally estimating gradients in the data analysis. 相似文献
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In this letter, we are trying to resolve the electromagnetic problem for the movements of the superconducting particles of the protoplanetary cloud in the magnetic field of Saturn. The force of levitation (Meissner-Ochsenfeld phenomenon) is introduced to the field of planetary science for the first time. It is shown from our theoretical analysis that rings of Saturn might have a superconducting origin, and rings might levitate within magnetic equator plane of the planet. 相似文献
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根据残差二次型次小与最小之差进行整周模糊度确认的关键是差值的分布,只有得到了合理的差值分布才可确定合理的界值.文中基于原有的两种方法及这两种方法的不足,从理论上导出了满足条件的差值分布,并作了一定的说明. 相似文献