Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Lakes (including artificial reservoirs) are important surface water resources, and they are also an important part of the earth surface system consisting of “mountains, waters, forests, fields, lakes, grassland and desert”. Based on the lake survey data and long-term monitoring data collected by the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences as well as other institutions, this paper systematically analyzed the overall status and long-term trends of the ecological and environmental changes of natural and artificial lakes in China, focused on the ecological and environmental status and changes of typical lakes in the five major lake zones in China and highlighted the protection effects and challenges facing the ecological environment of lakes in China. In the meantime, countermeasures and suggestions for policy-makers and are proposed to promote the protection and restoration of the ecology and environment of lakes in China, and to ensure the water safety and sustainable development of lakes and river basins.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Lake is an important component of inland water resource of China, and key ecological component of Mountain-River#2;Forest-Farmland Lake-Grassland life community. Lake is also a perfect research unit for ecological theory owing to its relative clearly isolate ecosystem. Field observatory, controlled experiment, and numerical simulation are common research methods for limnology theory development and ecological restoration technology innovation. In shallow lakes, the lake ecosystem is very sensitive to the change of environmental condition. For example, changes of physical condition, such as wind-wave, could strongly influence the sediment-water interaction, light condition of water, and the growth of phytoplankton, and finally change the whole ecosystem structure and ecological service. In China, field experiment facilities for limnology research are deficient. Most of the field experiments were undertook in small enclosures or small ponds. It is an urgent need of large-scale controlled field experiment system in limnology research. With the financial support of corner-stone research infrastructure project for the field station network of Chinese Academy of Sciences, Taihu Laboratory for Lake Ecosystem Research (TLLER) has accomplished a large-scale physical and ecological experimental infrastructure system, Shallow Lake Physical-Ecological Modeling Platform (LAMP) next to Lake Taihu, the third largest freshwater lake of China. The platform includes physical lake model, large ecological experimental field on lake, and 3-D numerical model of Lake Taihu (DYTHE). LAMP platform significantly enhances the research ability of controlled physical and ecological experiment about limnology theory and technology development.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Clean water and sanitation (SDG 6) is one of the 17 Sustainable Development Goals (SDGs) of the United Nations, but so far, the world is not on the right track to achieve SDG 6 targets. In order to change this situation and lead the world to achieve the goal of sustainable water resources management, the United Nations initiated the SDG 6 global acceleration framework including financing, data and information, capacity development, innovation, and governance. From the perspective of data and information that serving SDG 6 target monitoring and evaluation, this study analyzes the current global data progress, the role of Big Earth Data, technology, and the integrated application in SDG 6 target monitoring and evaluation. The study summarizes two problems in the global SDG 6 monitoring and evaluation: 1) There is still a lack of sustainably provided high-precision indicator monitoring data set. 2) Lack of operational system integrating data acquisition, indicator calculation and target evaluation. On this basis, the study proposes to establish standardized statistical forms and technical guidelines, to build a system platform for the monitoring and evaluation of all the SDG 6 targets and indicators.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Research on spatial pattern and green development of the Yangtze River Economic Belt is of a great significance to promoting ecological civilization construction and regional coordinated development in China. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences (CAS), has long been focusing on the research of sustainable development in Yangtze River Basin and Southeast Coastal Regions. Since the 1980s, a large number of studies have been conducted on the construction of the Yangtze River Industrial Belt, human activities and its eco-environmental impacts in Yangtze River Basin, shipping and port layout of Yangtze River Golden Waterway, evaluation and utilization of shoreline resources, and governance of space function partition and regional coordinated development. Meanwhile, policy-making and planning consultation as a social service has been afford for different levels of local governments alongside the Yangtze River Economic Belt. These works provide a scientific reference for the Yangtze River Economic Belt development issues in different periods, such as industrial transformation, transportation and shipping construction, ecological and environmental protection, regional division and cooperation, etc.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： As an emerging and special strategic resource, waterfront resources play an important economic, social, and ecological environment function, which is the key to the effective implementation of the strategy of the Yangtze River Economic Belt. Due to the lack of systematic research and efficient management of waterfront resources, unreasonable development has led to the destruction of waterfront ecological functions. We firstly elaborate the strategic position and role of waterfront resources, and secondly review the tracking research work of the Yangtze River waterfront resources since the 1990s. Then based on the results of the survey and evaluation of the waterfront resources of the Yangtze River Economic Belt carried out from 2017 to 2019, the existing problems of shoreline protection and utilization are analyzed, and countermeasures to promote the scientific use of the waterfront are proposed.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The Yangtze River Economic Belt is a major regional development strategy of China, to form the backbone axis of the national “one body and two wings” development and opening-up pattern. This paper systematically analyzed ecological background and status of the Yangtze River Economic Belt, such as ecosystem service value of Yangtze River, ecological location, ecological types, ecological geographic pattern, natural conditions and natural ecological disasters. Then the major ecological and environmental issues were summarized, including serious water and air pollution, dramatic degradation of main tributaries of the Yangtze River and lakes, the increasing cumulative ecological and environmental impacts of major projects, and the unharmonious relationship between rivers and lakes. Finally, four protection strategies were proposed to ensure successful implementation of the well-coordinated environmental conservation and avoiding excessive development in the Yangtze River Economic Belt, including: implementing water quality goals management by stressing water eco-environmental protection of the Yangtze River with the top priority; forming a land and space development pattern dominated by intensive, concentrated spatial development and natural and open ecological space; continuing to implement the green ecological protection project of the Yangtze River Economic Belt; and breaking the division of departments and localities, and implementing comprehensive watershed management.
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-11 Cooperative journals: 《干旱区地理》
Abstract：利用泰尔指数、σ系数、莫兰指数和空间回归模型等方法，对2012—2017年中国大陆346个市域单元收入房价比的时空演变规律进行分析，并探究其影响因素。结果表明：2012—2017年，中国市域单元收入房价比排名整体表现为东部>中部>东北>西部，其相对差异和绝对差异均随时间呈现增大趋势，居民住房支付能力稳步增强。2012—2017年，中国市域单元收入房价比的空间集聚性显著增强，空间分布不均衡性有逐渐增强的趋势。经济水平、城镇化水平、房地产投资水平、城市规模是影响中国市域住房支付能力的主要影响因素，其中，经济水平和城镇化水平对居民住房支付能力具有较大的正向影响，而房地产投资水平和城市规模为负向影响；2012—2017年我国东北和东中西部则不同程度上受不同影响因素的影响。
Subjects: Geosciences >> Geography submitted time 2019-01-11 Cooperative journals: 《干旱区地理》
Abstract：在鄱阳湖西南缘，风成砂质堆积的下风向，有厚层黄棕壤发育，OSL年代显示，为末次冰期风沙和风尘堆积。在厚田—打鼓岭断面，对沙山到黄棕壤的沉积物粒度并结合地貌学进行分析，发现：沿现代冬季风方向（NE 30°）自东北向西南，地表沉积相为沙—沙黄土—粘黄土逐渐过渡，粒度组成和粒度参数表现出从北而南的系统性变化，显示搬运动力和物源均单一且稳定；粒度参数与物源地的距离，服从对数函数分异模式，在约20km范围之内，变化最剧烈，之后渐趋平稳，20 km是碎屑分选的特征距离。研究结果给出了鄱阳湖西南存在风沙—风尘堆积体系的证据，并揭示了近源风成堆积沉积指标的变化规律，可为粉尘堆积的物源示踪提供相关理论参考。
Subjects: Geosciences >> Geography submitted time 2019-01-11 Cooperative journals: 《干旱区地理》
Abstract：在鄱阳湖西南缘，风成砂质堆积的下风向，有厚层黄棕壤发育，OSL年代显示，为末次冰期风沙和风尘堆积。在厚田—打鼓岭断面，对沙山到黄棕壤的沉积物粒度并结合地貌学进行分析，发现：沿现代冬季风方向（NE 30°）自东北向西南，地表沉积相为沙—沙黄土—粘黄土逐渐过渡，粒度组成和粒度参数表现出从北而南的系统性变化，显示搬运动力和物源均单一且稳定；粒度参数与物源地的距离，服从对数函数分异模式，在约20km范围之内，变化最剧烈，之后渐趋平稳，20 km是碎屑分选的特征距离。研究结果给出了鄱阳湖西南存在风沙—风尘堆积体系的证据，并揭示了近源风成堆积沉积指标的变化规律，可为粉尘堆积的物源示踪提供相关理论参考。
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