Formally, national sovereignty can be identified as hard and soft;social-structurally,it consists of politi- cal sovereignty, economic sovereignty and cultural sovereignty. With the globalization of world economy,na- ...Formally, national sovereignty can be identified as hard and soft;social-structurally,it consists of politi- cal sovereignty, economic sovereignty and cultural sovereignty. With the globalization of world economy,na- tional sovereignty is changing.Our country is now confronted by three major challenges: the independence of economic sovereignty,the integrity of political sovereignty and the equality of cultural sovereignty. This research probes how to maximize national benefits under globalization.展开更多
In the context of economic globalization and economic crisis, China＇ s oil security issues are not merely related to energy access and consumption, but also involve many aspects of the political and economic factors ...In the context of economic globalization and economic crisis, China＇ s oil security issues are not merely related to energy access and consumption, but also involve many aspects of the political and economic factors which are becoming increasingly complex. In view of this, we should not only need to attach great importance to energy security, making full use of ＂two markets and two resources＂ to take a variety of channels to ensure oil supply diversification, but also should develop oil security strategy from a strategic level, and actively participate in international oil trading system. Furthermore, we should support China＇ s oil enterprises from the political, financial and other aspects, so as to ensure adequate, stable and affordable supply ofoil to meet China＇ s economic construction requirement.展开更多
Under the new situation of advocating the development of circular economy and low-carbon economy in the world, the agriculture is facing all the challenges to ensure food safety, dealing with climate change, promote e...Under the new situation of advocating the development of circular economy and low-carbon economy in the world, the agriculture is facing all the challenges to ensure food safety, dealing with climate change, promote energy conservation and pollution reduction, protect resources and environment, and increase the income of farmers. Moreover, developing circular agriculture is in the direction that the international challenges can be dealt with and the development of agriculture in China can be accelerated. This paper has reported current situation of agricultural circular economy, keep energy conservation and pollution reduction, and analyzed the basic thought of developing agricultural circular economy.展开更多
The ecological and environmental effects caused by land use change have attracted global attention.Huaihai Economic Zone, as the core of the Huaihe River ecological economic belt, has experienced a reciprocal evolutio...The ecological and environmental effects caused by land use change have attracted global attention.Huaihai Economic Zone, as the core of the Huaihe River ecological economic belt, has experienced a reciprocal evolution of land use, ecological security and regional economic development. Based on multi-stage land use data extracted by Google Earth Engine(GEE), the spatio-temporal differentiation characteristics of ecosystem service value(ESV) evolution in Huaihai Economic Zone from 1998 to 2018 were analyzed with the help of ESV assessment and a minimum accumulated resistance model(MCR), and the regional ecological security pattern(ESP) was optimized. The results show that ESV intensity has obvious spatial differentiation, which is higher in northeastern China and lower in southwestern China. The median ESV area accounted for the largest proportion, while the high and low ESV areas accounted for a small proportion. The characteristics of EVS temporal and spatial differentiation show decreasing and increasing grades. From the perspective of development period, the ESV grade changes show a positive trend. In the optimization of the ecological security pattern, 26 important ecological sources, 22main landscape ecological corridors, and 65 ecological strategic nodes were optimized and identified, and the middle-level ecological security zone accounted for the largest proportion. The main reasons for the changes in the ESV and ESP are closely related to the changes in local natural resources and the changes and adjustments in government protection policies. These research results can provide a reference for inter-provincial territorial space protection and the formulation of a sustainable development strategy.展开更多
文摘Formally, national sovereignty can be identified as hard and soft;social-structurally,it consists of politi- cal sovereignty, economic sovereignty and cultural sovereignty. With the globalization of world economy,na- tional sovereignty is changing.Our country is now confronted by three major challenges: the independence of economic sovereignty,the integrity of political sovereignty and the equality of cultural sovereignty. This research probes how to maximize national benefits under globalization.
文摘In the context of economic globalization and economic crisis, China＇ s oil security issues are not merely related to energy access and consumption, but also involve many aspects of the political and economic factors which are becoming increasingly complex. In view of this, we should not only need to attach great importance to energy security, making full use of ＂two markets and two resources＂ to take a variety of channels to ensure oil supply diversification, but also should develop oil security strategy from a strategic level, and actively participate in international oil trading system. Furthermore, we should support China＇ s oil enterprises from the political, financial and other aspects, so as to ensure adequate, stable and affordable supply ofoil to meet China＇ s economic construction requirement.
文摘Under the new situation of advocating the development of circular economy and low-carbon economy in the world, the agriculture is facing all the challenges to ensure food safety, dealing with climate change, promote energy conservation and pollution reduction, protect resources and environment, and increase the income of farmers. Moreover, developing circular agriculture is in the direction that the international challenges can be dealt with and the development of agriculture in China can be accelerated. This paper has reported current situation of agricultural circular economy, keep energy conservation and pollution reduction, and analyzed the basic thought of developing agricultural circular economy.
基金The National Natural Science Foundation of China (41971175)。
文摘The ecological and environmental effects caused by land use change have attracted global attention.Huaihai Economic Zone, as the core of the Huaihe River ecological economic belt, has experienced a reciprocal evolution of land use, ecological security and regional economic development. Based on multi-stage land use data extracted by Google Earth Engine(GEE), the spatio-temporal differentiation characteristics of ecosystem service value(ESV) evolution in Huaihai Economic Zone from 1998 to 2018 were analyzed with the help of ESV assessment and a minimum accumulated resistance model(MCR), and the regional ecological security pattern(ESP) was optimized. The results show that ESV intensity has obvious spatial differentiation, which is higher in northeastern China and lower in southwestern China. The median ESV area accounted for the largest proportion, while the high and low ESV areas accounted for a small proportion. The characteristics of EVS temporal and spatial differentiation show decreasing and increasing grades. From the perspective of development period, the ESV grade changes show a positive trend. In the optimization of the ecological security pattern, 26 important ecological sources, 22main landscape ecological corridors, and 65 ecological strategic nodes were optimized and identified, and the middle-level ecological security zone accounted for the largest proportion. The main reasons for the changes in the ESV and ESP are closely related to the changes in local natural resources and the changes and adjustments in government protection policies. These research results can provide a reference for inter-provincial territorial space protection and the formulation of a sustainable development strategy.
