Integrated Structure and Mineralization Study Using Aero-Magnetic, Aero-Spectrometric and Remote Sensing Data at Esh El-Mallaha Area, Eastern Desert, Egypt

The main scope of this research is to detect geologic structure trends affecting the study area, determine uranium anomalous areas and define alteration zones. Airborne magnetic data were used to detect the geologic structure trends affecting the study area through applying edge detectors such as total horizontal derivative, analytic signal and tilt derivative. The radio-spectrometry data and Landsat image data were used in determining the uranium anomalous areas and alteration zones. The integration between geology, magnetic and Landsat image was applied through constructing lineaments density map for the three data sets resulting in the leading of NW-SE trend all over the area. This integration makes clear that the basement (Red Sea hills), Esh El-mallaha range and G. Zeit are limiting two large basins (West Mallaha and Zeit). In addition, the main areas of uranium enrichment (Duwi formation at Esh El-Mallaha range) are found to be well related to alteration zones.

喀斯特山区土地流转与现代农业规模经营——基于六盘水“3155”工程的实践样本

农村土地流转是解决喀斯特山区耕地资源碎片化、生产经营分散化、经济低效弱质化、农户生计贫困化的一个关键性问题。六盘水农业特色产业发展"3155"工程在政府主导与市场主体交互作用中,通过创造性实践探索并形成了以资源变资产、资金变股金、农民变股东的"三变"农业发展模式。"三变"发展不仅在加快土地资源流转,壮大农村集体经济,转化农民职业身份,化解农村"空壳村"等问题提供成功案例,而且为西部山区农业现代化与土地适度规模经营提供了一个看得见、摸得着的实践样本。