Subjects: Statistics >> Social Statistics submitted time 2024-05-18 Cooperative journals: 《中国科学院院刊》
Abstract: This study analyzes in detail the effectiveness and existing problems of the current policy implementation of the main functional zone in the “multi planning and integration” national land spatial planning system, and proposes an overall idea of systematizing, differentiating, coordinating, and incentivizing the policy system of the main functional zone in the new era of national land spatial governance. From the perspectives of strengthening the top-level design of policy systems, classifying and improving policy tools for the main functional zone, strengthening comprehensive policy coordination, and improving policy implementation evaluation mechanisms, the policy recommendations are proposed for improving and implementing the strategic system of the main functional areas.
Subjects: Statistics >> Social Statistics submitted time 2024-03-27 Cooperative journals: 《中国科学院院刊》
Abstract: In the past 20 years, the hydrological regime of Poyang Lake changed significantly. The lake water level has been continuously decreasing, resulting in severe droughts. In particular, an extreme drought occurred in 2022, when the lake area shrank to less than 300 km2. The 2022 extreme drought in Poyang Lake had great impacts on economy, society and ecological environment, which aroused great attentions and wide concerns. Based on long-term data series of meteorological and hydrological data and the existing research outcomes and with the aid of hydrological modeling, this study analyzed the impacts and contributing factors of the 2022 drought in Poyang Lake. Suggestions are also offered on the potential synergistic regulation of hydraulic engineering to cope with such droughts in the future to secure water safety in the middle Yangtze River.
Subjects: Statistics >> Social Statistics submitted time 2024-03-27 Cooperative journals: 《中国科学院院刊》
Abstract: Ecological protection and green development in the Yangtze River basin are critical to the ecological construction of a Beautiful China. This study analyzes the current situation and main problems of the water ecology in the Yangtze River basin, and introduces the development of the Yangtze River Simulator, and the design for the ecological operation of the Three Gorges Reservoir, the main river, and the lakes connected to the river. Through the simulation of the main stream water ecology and lake water ecology by the Yangtze River Simulator, the optimization plan for the ecological regulation of the Three Gorges Reservoir was obtained, and specific suggestions for the ecological regulation of the Three Gorges Reservoir and the development of river simulator in future are put forward.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2017-03-22 Cooperative journals: 《中国科学院院刊》
Abstract:我国湖泊数量大、分布广、类型多,被认为是世界上湖泊生态类型最为丰富的国家之一。多样化的湖泊环境孕育了丰富的微生物多样性和资源,但迄今人们对其结构和功能尚知之甚少。通过大规模的湖泊微生物组分析和比较基因组研究,可揭示我国湖泊微生物多样性的分布规律、形成机理和维持机制,阐明典型湖泊微生物功能基因的组成,探索极端环境条件下湖泊微生物的适应机制,发现新的微生物功能和代谢途径,并通过比较不同环境条件下驱动地球元素循环的微生物功能基因组、环境转录组成和蛋白组,揭示微生物驱动湖泊生态系统中关键元素循环的过程、机制及其环境调控机理。这些研究结果的获得,将不仅有助于深入了解湖泊生态系统结构与功能,促进地球科学与生物学间的交叉与融合,推动学科持续发展,而且将为我国湖泊微生物资源的保护与可持续利用及湖泊生态环境的治理与保护提供科技支撑。