Coal power generation is the second largest water use industry in China; its fast expansion puts pressures on water resources; water use quota management is supposed to be a vital means in saving water for coalpower generation industry. This paper, based on benchmark energy efficiency level of nationwide coal power plants, uses multiple regression model to evaluate water use intensity and factors of unit power generation in coal power plants, and estimates the expected water saving quantity in accordance with the latest edition of Coal Power Water Use Quota. The suggested general water use quota has little push on motive of saving water upgrading for coal power plants. Total saving water may be 122 millions cubic meters in 2020 given all plants comply with the suggested quota, but could be up to 823 millions cubic meters if three northern China regions satisfy the quota where water resources are rare, while other regions reach a premium quota. Viewing from technical perspective, water saving quantity proportions of circular cooling, direct cooling and air cooling are 58.6%, 18.7% and 22.8% under differentiated scenarios. Water saving quantity in eastern and northern China is over 200 millions cubic meters, around one forth nationwide, 108 million cubic meters in northwestern China, and 53 million cubic meters in northeastern China, the least.
Scientific measurement of urbanization level is of significance to industrialization, urbanization and harmonious development of economy and society. This paper uses 16 indicators to establish a synthetic measurement index system to evaluate Yulins urbanization level. It applies entropy to measure the synthetic development level of Yulins urbanization, and the development level of its subsystems of population, economy, society and space from 1990-2009. The results show a rising urbanization level, with variance in contribution of its subsystems. Economy subsystem has the highest score and increment, followed by space subsystem. The development of society and population subsystems is slow. The improvement of society subsystem is the key to Yulins urbanization and the slow development of population subsystem will influence the development of economy subsystem in the future.
This paper uses logit model to study the factors of enterprises ’will to protect environment, and presents suggestions in intensifying enterprises’will and effectively reduce pollution. Enterprises’will to protect environment is influenced by themselves, their handling pollution and investment, government and society. The factors which include enterprise managing teams education level, enterprise category, size, investment on environmental protection equipment, local government’s training on enterprise’s environment staff, enterprise’s tax, local community’s knowledge on the pollution degree, and local community’s action against pollution are positive to enterprise’s will, while the factors which include enterprise’s annual profit, local environment administration’s monitoring on enterprise’s discharge, and execution of pollution charge regulation are negative.
As coal resources are depleted, the environmental protection shall be enhanced during mine construction and mining, especially to construct the mine parks. This paper, based on a case study of Kailuan national mine park, discusses the development modes during mine parks construction. Under the direction of the scientific concept of development, mine parks construction can not only keep a sustainable development for mining enterprises, but also improve the mine environment and urban environment and stimulate the economic growth. It is a new approach to economic transformation for resources-based cities.
Oil-gas assets calculation is one of three puzzles in oil-gas accounting. This paper, based on a foreign study achievement and a domestic practice, analyzes the present status of oil-gas assets depreciation and minus calculation methods, and presents some suggestions to improve the calculation methods regarding assets depreciation and minus referred by in the newly-issued “Enterprise Accountant Act 27—Oil-gas Extraction”.