Interaction Mechanism between Formation Process of Bank Collapse Disaster Chain and Territorial Space Utilization of Large Reservoirs

Number of reservoirs in China ranks the first in the world. Due to the complex geology, and superimposing rainfall and reservoir water fluctuation, the bank collapse chain is prone to disasters. The Yangtze River Reservoir is key geological disaster prevention area. Studying the process of reservoir disaster is significant because of the limited territorial space utilization. Scientific and technological issues, i.e., the mechanism of bank collapse disaster chain of large reservoirs, the interaction mechanism of bank collapse disaster chain and territorial space utilization, the early identification, monitoring technology and ecological prevention and control technology system of disaster chain, and the territorial space geological safety and control technology system are focused. We consider the material transformation, energy transfer and information transmission in disaster chain;adopt the survey, Space-Air-Ground integrated monitoring, theoretical analysis, numerical simulation and the multidisciplinary research methods;reveal the chain source development, evolution process of secondary and derivative disasters;explore the interaction mechanism of disaster chain and territorial space utilization;construct the system of early identification, monitoring, early warning, control and ecological preven-tion to achieve Emission Peak and Carbon Neutrality;provide theoretical and technical support for the territorial space geological safety, regulation and utilization of large reservoirs.

Optimization of territorial space layout in China

The evolution of territorial space is intrinsically linked to economic growth, societal welfare, and ecological preservation. In the context of escalating spatial conflicts and stringent resource limitations, resource efficiency has emerged as a fundamental pillar for the scientific optimization of territorial space layout. Drawing upon resource efficiency metrics from cities nationwide, this study constructs scenarios for territorial space development and conservation, assesses developmental capacity under varying preferences, and subsequently delineates strategic blueprints using an integrated “point-axis-area” approach. The findings reveal the following:(1) Resource efficiency in China has witnessed a consistent uptick, yet remains modest overall, with marked regional disparities.(2) Throughout the investigation period, developmental capacity has seen progressive enhancement, with a pronounced capacity in scenarios favoring development, radiating axially from urban conglomerates.(3) The layout of pivotal points and developmental axes has transitioned from a “tri-pillar” to a diamond configuration, with the coastal corridor, Harbin-Beijing-Guangzhou corridor, and the corridor along the Yangtze River standing out.(4) Strategic points progressively converge along key axes, whereas dominant regions exhibit clear differentiation on either side of the Hu Huanyong Line. By integrating elements of the territorial spatial structure,this paper proposes blueprints for “five horizontal and three vertical zones with eight cores and three areas,” “four horizontal and three vertical zones with six cores and three areas,”and “three horizontal and four vertical zones with five cores and three areas,” corresponding to scenarios of prioritizing development, status quo maintenance, and prioritizing conservation, respectively. The outcomes of this research offer a technical foundation and theoretical guidance for the pursuit of high-quality territorial space development and a vision of picturesque landscapes.

Protection of Ecological Environment in Territorial Spatial Planning

According to the fundamental foundation of China's economic and social development,it is necessary to consider the state of the land and resources.This has caused great concern about the sustainable development of land and resources.The economy has been developing steadily,bringing China into a new stage.At this stage,we should plan the land and resources more reasonably,so as to achieve the goal of ensuring economic development and long-term social stability.Therefore,the management of land and resources needs to be improved.Using scientific planning methods,the original technology is improved to reasonably protect and develop China's land and resources,thus contributing to the sustainable development of China and even the world.

基于适宜性评价的国土空间分区及其生态效应研究——以鄂州市为例

Exploring the spatial zoning of urban territories and their ecological effects under different decision preferences is an important approach to promote the sustainable utilization of regional resources.This paper constructs an index system for evaluating the suitability of territorial space development from the perspectives of urban development,agricultural production,and ecological conservation.It predicts and simulates the trade-offs between territorial space development and protection in Ezhou under different decision preferences using the Analytic Hierarchy Process(AHP) and Ordered Weighted Averaging(OWA) method.The modified equivalent factor method is used to analyze the ecosystem service values of different functional areas.The results indicate the following:(1) the preferences of decision-makers considerably influence the level of territorial space suitability.Higher(lower)levels of concern for risk result in more optimistic(pessimistic) evaluators,and this affects the priority given to ecological protection(development and utilization).(2) Under the ecological priority scenario,the status quo scenario and development priority scenario,there are significant differences in regional suitability levels.The ecological priority scenario gives high importance to ecological protection,resulting in the absolute protection of the Liangzi lake area,with 42.59% of Liangzihu district considered unsuitable for development.In contrast,the development orientation scenario designates Echeng district,an economic and political center,as highly suitable for development,with over 60% of the area available for development.(3) The total value of ecosystem services in Ezhou city was 213.355 billion yuan in 2018.Ecosystem service values were mainly provided by the water area in the permanently unsuitable development zone,leading to a mismatch between the supply and demand of ecosystem services under different scenarios.