邹平县农村建设用地减少与城镇建设用地增加挂钩调研报告

<国务院办公厅关于转发<国土资源部关于做好土地利用总体规划修编前期工作的意见>的通知>中指出:"按照城镇建设用地增加与农村建设用地减少相挂钩的要求,提出土地利用调整和推进建设用地整理的措施".农村建设用地减少与城镇建设用地增加挂钩政策为缓解建设用地压力提供了一个新的有效途径,为摸清邹平县挂钩的具体数量及存在问题,2007年3月-2007年6月,邹平县国土资源局对16个镇办农村建设用地减少情况进行了全面调研,并重点对经济发展较快的长山镇、韩店镇、明集镇农村建设用地减少情况进行了调研.     

Characteristics, Formation Periods, and Controlling Factors of Tectonic Fractures in Carbonate Geothermal Reservoirs: A Case Study of the Jixianian System in the Xiong’an New Area, China

As typical carbonate geothermal reservoirs with low porosity in northern China, the Jixianian System in the Xiong’an New Area is the main target for geothermal fluid exploration. The Jixianian System comprises the Gaoyuzhuang, Yangzhuang, Wumishan, Hongshuizhuang, and Tieling formations. The characteristics, formation periods, and controlling factors of reservoir tectonic fractures have been determined based on analyses of outcrops, cores, thin sections, and image logs. The results show that unfilled fractures account for over 87% and most tectonic fractures are high-angle shear fractures with angles concentrated at 40° to 70° and the fracture porosity increases linearly with an increased fracture aperture. Within the same tectonic setting and stress field, the lithology and layer thickness are the dominant factors governing the development of tectonic fractures, which are the most developed in dolomites and thin layers. Tectonic fractures were most likely formed in regions near faults or areas with larger stress gradients. The tectonic fractures in the carbonate geothermal reservoirs are roughly divided into four sets: NNW–SSE and NNE–SSW oriented ‘X’-conjugated shear fractures formed from the Paleozoic to the pre-Yanshanian Movement; NE–SW-oriented shear fractures, formed in episode B of the Yanshanian Movement, occurred at the Early Cretaceous; nearly E–W-oriented tensional fractures formed in the late Yanshanian Movement at the Late Cretaceous to Paleogene, and NEE–SW-oriented shear fractures formed during the Himalayan movement.     

绿色勘查在土地质量地球化学调查中的探索与实践

土地质量调查作为地球化学勘查的一种技术手段，具有覆盖面积广、样品类型多等特点。在传统土地质量调查基础上开展绿色勘查具有重要的意义。依据土地质量地球化学调查方法技术体系，提出了土地质量地球化学绿色勘查工作思路，依托胶东典型丘陵区“山东省莱阳北部地区土地质量地球化学调查与评价”项目，系统总结了土地质量地球化学调查中生态环境敏感区识别、点位布设及优化、样品采集及回填、样品加工、采样工具优化等方面的绿色勘查经验和做法，开展了绿色勘查示范，为推广绿色勘查在地球化学勘查工作方面提供了借鉴依据。