Distribution of the Crustal Magnetic Field in Sichuan-Yunnan Region, Southwest China

Based on the new and higher degree geomagnetic model NGDC-720-V3, we have investigated the spatial distribution, the altitude decay characteristics of the crustal magnetic anomaly, the contributions from different wavelength bands to the anomaly, and the relationship among the anomaly, the geological structure, and the geophysical field in Sichuan-Yunnan region of China. It is noted that the most outstanding feature in this area is the strong positive magnetic anomaly in Sichuan Basin, a geologically stable block. Contrasting with this feature, a strong negative anomaly can be seen nearby in Longmen Mountain block, an active block. This contradiction implies a possible relationship between the magnetic field and the geological activity. Completely different feature in magnetic field distribution is seen in the central Yunnan block, another active region, where positive and negative anomalies distribute alternatively, showing a complex magnetic anomaly map. Some fault belts, such as the Longmen Mountain fault, Lijiang-Xiaojinhe fault, and the Red River fault, are the transitional zones of strong and weak or negative and positive anomalies. The corresponding relationship between the magnetic anomaly and the geophysical fields was confirmed

High-Quality Development of China's Coal Industry

As China develops toward a high-quality stage and the carbon peak and carbon neutral targets are proposed, a new green and low-carbon development pattern is urgently required. Coal is the primary energy of China and it provides a solid guarantee for the stable operation of the economy; however, the coal industry in China is unbalanced and insufficient in terms of efficiency, technology, market, safety, environment, and other aspects and it can no longer satisfy the new requirements for high-quality energy development and active response to climate change. In this article, we analyze the three imbalances and six insufficiencies that coal industry development faces, and define high-quality development of the coal industry considering the new requirements of energy development.Subsequently, we establish a three-level evaluation index system from three aspects of power, quality, and efficiency reforms. The system is also comprised of five dimensions—innovation-driven, intelligence and high efficiency, diversification and economy, safety and health, green and low carbon—and 23 indexes. Moreover, we evaluate the development level of the coal industry in China using the comprehensive evaluation method of GRA-TOPSIS. The development of an innovation-driven green and intelligent development system, a collaborative and integrated green and low-carbon development system, a market system with orderly competition, a comprehensive open system with win-win cooperation, and a high-quality talent team system has become the key task for the highquality development of the coal industry. Furthermore, we propose suggestions from the aspects of top-level institutional arrangement, carbon reduction in coal industry, and coal production and demand balance