scholarly journals Ecological Security Classification of Regionally Sustainable Utilization of Land Resources Based on SVM

2018 ◽  
Author(s):  
Jing Zhao ◽  
Zhen Jin
Keyword(s):  
Sustainable Utilization ◽  
Ecological Security ◽  
Land Resources

Evaluation on Ecological Security of Land Resources

2013 ◽  
Vol 664 ◽  
pp. 129-132
Author(s):  
Sai Ming Yang
Keyword(s):  
Mathematical Models ◽  
Index System ◽  
Research Topic ◽  
Social Aspects ◽  
Sustainable Utilization ◽  
Ecological Security ◽  
Security Assessment ◽  
Land Resources ◽  
Ahp Method ◽  
Security Values

Ecological security is the basis of sustainable development.Ecological security assessment of land resources is a forefront research topic of sustainable utilization of land resources. A index system of twenty indicators on ecological security of land resources,including natural, economic and social aspects, is established. Using AHP method to determine the index weights and mathematical models to calculate ecological security values of land resources, Ecological security values of land resources are devided into five grades.

Research about the Change of Land Resources Ecological Security Based on P-S-R in Chongqing City

2013 ◽  
Vol 726-731 ◽  
pp. 4797-4800
Author(s):  
Ai Qing Guo ◽  
Jing Wang ◽  
Ling Qin
Keyword(s):  
Index System ◽  
Ecological Condition ◽  
Land Resource ◽  
Sustainable Utilization ◽  
Ecological Security ◽  
Land Resources ◽  
Chongqing City ◽  
Ecological Problems ◽  
Security Index

In recent years, the land resource ecological problems become more and more serious. And the study on ecological security of land resources becomes the frontier problems on Sustainable Utilization of land resources. Based on P-S-R model, this paper built the land resource ecological security index system. And it studyed the land resource ecological security status of Chongqing city from 2001 to 2010.The results showed that land resources ecological security situation of Chongqing city has been improved in recent ten years, but the security situation is still not optimistic. It needs further take effective measures and improve the land resources ecological condition.

scholarly journals Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5613
Author(s):  
Xiao Li ◽  
Xiong Zhang ◽  
Hao Ren
Keyword(s):  
Contact Angle ◽  
Hydrostatic Pressure ◽  
Air Permeability ◽  
Coating Material ◽  
Raw Material ◽  
Sustainable Utilization ◽  
Land Resources ◽  
Nano Structure ◽  
Material Content ◽  
Pressure Resistance

Land desertification, a severe global ecological and environmental problem, brings challenges to the sustainable utilization of land resources in the world. The purpose of this research is to use hydrophobic theory to prepare impervious and breathable sand, and to solve the problems of sandy soil that seeps easily and makes it difficult for vegetation to survive in desertified areas. The influences of coating material content, first-level and second-level rough structure on the impermeability and air permeability of impervious and breathable sand were studied. The research showed that, with the increase in coating material content, the impervious performance of the sample increased firstly and then decreased, and the air permeability rose continuously. The hydrostatic pressure resistance of the sample can reach an extreme value of 53 mm. The first-level rough structure of micron structure can greatly improve the hydrophobic performance, thus improving the impervious performance. The addition of micron calcium carbonate would improve the hydrostatic pressure resistance height of the sample to 190 mm. The sample would reach a superhydrophobic state in the condition of a first-level rough structure of a nano structure built by nano silica, and the contact angle was up to 152.0°, so that the hydrostatic pressure resistance height can rise to 205 mm. The best performance would be achieved under the condition of relatively less raw material with a second-level rough structure of micro–nano. At this point, the contact angle of the sample reached 152.8° and the hydrostatic pressure resistance height was up to 205 mm. At the same time, the air permeability index of the above four kinds of impervious and breathable sand met all planting requirements. The sample prepared can satisfy the demands of different degrees of impermeability and air permeability, and can be widely used in desertification control.

Study on the Land Use Structure in Xuzhou City for it's Sustainable Development

2013 ◽  
Vol 409-410 ◽  
pp. 52-55
Author(s):  
Xiao Hong Rong ◽  
Chun Xia Li ◽  
Xiao Yan Zhang
Keyword(s):  
Land Use ◽  
Sustainable Development ◽  
Equilibrium State ◽  
Sustainable Utilization ◽  
Entropy Theory ◽  
Land Resources ◽  
Equilibrium Degree ◽  
Land Use Structure ◽  
Xuzhou City ◽  
Regional Land

Based on the relation between regional land use structure and sustainable utilization for land resources, we analyze the land use structure in Xuzhou City by entropy theory and GM(1,1) model in this paper. The results shows that Xuzhou information entropy is increasing year by year, the land use structure in Xuzhou city develops gradually from order to a relatively disorder state, the equilibrium degree is increasing and dominance degree is decreasing year by year. That shows that the land use structure in Xuzhou City is evolving to equilibrium state. So the shortage of land resources in Xuzhou city will become more and more prominent, and adjust strategy of regional development urgent needed.

Land resources and sustainable utilization in China

2009 ◽  
Author(s):  
Wenwu Zhao ◽  
Haiyan Xu ◽  
Guanghui Jiang ◽  
Yinhui Zhang
Keyword(s):  
Sustainable Utilization ◽  
Land Resources

scholarly journals INTERNATIONAL INSTITUTIONAL SUPPORT FOR ECONOMIC AND ECOLOGICAL SECURITY

2020 ◽  
Keyword(s):  
Energy Resource ◽  
Institutional Support ◽  
Economic Security ◽  
Structural Basis ◽  
Ecological Security ◽  
Global Level ◽  
Health And Physical Education ◽  
Research Problems ◽  
Institutional Unit

This article focuses on the study of organizational and institutional support of ecological and economic security at the global level as one of relevant modern research problems. It emphasizes the need for a harmonious combination of economic and environmental tools to ensure harmonious development and considers the concepts of institute, institutional unit, and institutional support. At the global level, the article analyzes approaches to the classification of institutional units of ecological economy and considers the main reasons for the complexity of the classification of international organizations. The classification of institutional units according to general and specific features at the international level is offered. According to general features, the classification provides for the division by time into permanent and periodic. According to the sphere of activity, a division into political-institutional units (integration, security, coordination), economic institutional units (energy, resource, transport and communication, agro-industrial, financial, trade, recreation, and services), social institutional units (social development, cultural and educational, health, and physical education) is envisaged. According to the organizational form, the division into governmental and non-governmental institutional units is proposed. According to the methods and principles of activity, the division into lawful, illegal, and hybrid institutional units is proposed. The expediency of allocating a classification group – hybrid organizations is substantiated. By specific features, the classification provides for the division by territorial distribution (global, regional, and group), based on membership (open, semi-open, and closed), on a structural basis (UN systems and non-UN systems). As a result of study, a system of classification of institutional units for ecological economy at the global level was proposed. The main problems of institutional support of greening at the global level are also highlighted.

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