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。     

Thermodynamics under the extended uncertainty principle background: Q−ϕ criticality analysis

The study of thermodynamics in the background of the “extended uncertainty principle (EUP)” comes into interest in recent eras. In this article, we consider a charged black hole (BH) in higher dimensional space–time and present the thermodynamic parameters, based on a semiclassical framework, initially. Then we extend the same within the EUP background. We also analyze the $Q-\varphi$ criticality and find the critical points (${\varphi }_c,Q_c$ and $T_c$) when $Q-\varphi$ criticality appears. We study the effects of EUP on phase transition for higher dimensions ($d=5$) by plotting the $Q-\varphi$ diagrams. Further, we investigate the stability (thermal and global) of the BHs by employing the specific heat and the Gibbs free energy without and within EUP correction and compare the results with the Schwarzschild BHs in higher dimensions.     

大兴安岭林区无人机可见光影像散发枯立木识别算法

枯立木识别对森林资源管理,生物多样性保护,以及森林碳储量变化评估具有重要价值.无人机高分辨率影像为枯立木调查提供了较为便捷的方式.现有枯立木识别算法多依靠拥有红边、近红外波段的多光谱影像来实现.相比于多光谱相机,消费级无人机通常搭载的是用于获取可见光(RGB)影像的普通数码相机,较少的波段信息为基于RGB影像的枯立木自...