Bidirectional flowing of urban-rural elements is a key to supporting urban-rural integrated development，which is based on the free bidirectional flowing of the productivity elements.Howeve，China's current urban-rural elements only show a directional flowing from rural to urban, obstacles exist from urban to rural.To further study the obstacles of productivity elements to countryside，this paper，based on a case study on County S's Project J，finds out the major obstacles.There are components unfitting modern agriculture and rural tourism in China's current rural land regime， policies and operation，resulting in obstacles in obtaining agricultural land use and rural construction land use.This paper presents the following suggestions.China should implement shareholding reform on agricultural land use based on land right determination， managing agricultural land in a whole from pieces，a path to scaled agricultural land circulation. China should reform township division to break the administrative obstacles in land circulation.China should reform rural collective operating construction land use by optimizing land-to-market mechanism，which can use rural scattering and idling land as a whole and provide spatial holding places for productivity elements to countryside.China should optimize the geographical layout of collective rural construction land use, fulfilling its functions in concentrating industries, guaranteeing social services and promoting cultural development to combine the major urban downtowns with regional towns.It serves as a path for productivity elements to countryside.

America's shale gas revolution alters its energy development, and also impacts the global energy pattern. This paper, based on its development and impacts of shale gas revolution, uses a quantitative model to reveal if it brings an impact on the natural gas markets of North America, Europe and Japan. On the basis of monthly data of 1988 June to 2018 May, BP breakpoint test model which structural mutation is adapted on the traditional unit root is used to analyze its characters of America's shale gas developing stages combined with related policies. Impulse response and variance is employed to study their correlation of the three big global gas markets before and after shale gas revolution. Sequence segmentation and industrial status of natural gas suggests the process and mechanism of America's shale gas revolution on global natural gas market. It is concluded that America's shale gas revolution raises its influence of American-European natural gas price on Asian market or even the global market.

General geological (ore) survey is a geological work for public interests financed by governmental capital in China, which can be determined by its objectives, capital source, achievements ownership and operating mechanism, of that achievements ownership is the key factor to determine its public interests for overseas general geological (ore) survey. Currently, China's overseas general geological (ore) survey is a nation-level cooperation sponsored by Chinese geological survey, exchanging geological and mineral resources achievements, which may provide general information for Chinese companies on overseas targeting areas, risk exploration, mineral development. China-Shanghai Cooperative Organization Geological Research Center, in Xian Geological Survey Center, China Geological Survey, is cooperating with middle Asia on geological survey with some achievements, marking its public interests of overseas general geological (ore) survey on Chinese companies.

This paper uses Nolte-Smith net double logarithmic pressure-time curve, combined with in-situ operating curve changes, to establish 8 types of hydraulic-fracturing sanding curve, which are employed to study the fracturing curves in 230 beds in 120 wells in Zhengzhuang well field and the deep coal reservoir fracturing effect, aiming at offering references for fracturing design, adjusting operating parameters. Type NS-III-3 (interlayered end-desanding and halt-sanding-return-discharging process) and NS-IV-3 (object layer sub-layer pressure discharging process) are the premium fracturing curves of deep low-permeable coal reservoir in Zhengzhuang well field. Fracturing net pressure works on the original coal fissures, with fissures opened to connect coal sub-layers; then franc sand and fracturing liquid move to the interfaces of coal reservoir sub-layers along its original fissures. Medium-low permeable “sweet spot” areas exist in the deep coal reservoir, which may be considered as a supplement. 

Based on the informatization construction of the information center, China aero geophysical survey and remote sensing center for land and resources, this paper determines the information management flowchart of mineral resources projects, establishes projects hierarchy and threeleveled management model, which can trace projects, subjects when changes happen and project history and improve the query and statistical function. The management system, which is based on J2EE and SSH2 development framework techniques, can be combined with application and data consolidation, and completes information gathering, processing and inputting. It has been recommended to be used in the research center. This system also enhances the supervision on project execution process and project funds use that offers references for developing the similar projects management system.

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 teams 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”.