Advanced Materials Research Vols. 726-731

Abstract: With the broadening and deepening of economic development, the urban growth of many small cities begins to present sprawl in China in the new century. Replacing the original act of urban planning, the Town and Country Planning Act became effective in 2008. This paper compares the contents of the two acts, and especially analyses the stipulations about urban land scale and spatial construction activities from the perspective of the revised legislation. Based on the introduction of the master plan of Lianjiang Town in Fujian Province, the paper holds that China can take advantage of the legal effect of the new act to make the master planning of small cities more cautious and rational, as well as to promote the popularity of smart growth concept in small cities.

Abstract: The purpose of this paper is to test the relationship between population density and energy consumption in China. To test the relationships above, Data was collected for sixteen cities in Yangtze River Delta from 1999 to 2009 in China. Econometric modeling of panel data analysis was used to examine the hypotheses. FE estimates and RE estimates were obtained. Hausman estimate have been used to select appropriate results. U shape between energy consumption and population density exists when controlling other variables. It means that cities have optimal population density for minimum energy consumption. The paper shows that population density have U shape influences on urban energy consumption.

Abstract: In order to compare the Landscape ecological and hydraulic values an eco-hydraulic model was built by cross-evaluating ecological landscape index and SWMM (Storm Water Management Model) based on a virtual model of the watershed management. A case study was adapted on the small reservoirs located in Mueul, Gumi city, Gyeongbuk-do, Korea. 27 small reservoirs located in Mueul area were categorized in 3 types such as single distribution (SD), equal distribution (ED), unequal distribution (UD), by the hydrogeomorphic features flowing into the main stream. At the results of simulating on the 3 types of model, unequal distribution (UD) model was realized as the highest effective reduction model of rainfall outflow. And as the reservoirs served as the landscape unit, the relationships between the ecological landscape index and virtual watershed models on small reservoirs in Mueul area were simulated. As a result, as the rainfall runoff reducing effects of small reservoirs, the more increasing the proportion of water volume to catchment area the more effective. Ecological soundness of large-scale reservoirs are higher than smaller one, but if we place several small reservoirs with same total storage volume in the same region, we can concluded that distributing several small reservoirs would be more effective on ecological soundness than single large-scale reservoirs. By utilizing distributed watershed system in urban planning, water circulation system and the species diversity and ecological soundness of watershed ecosystems would be improved.

Abstract: For studying the influence of human activity on the change of land use type and ecological environment in coastal region, the coastal zone of Yancheng was selected to analyze the change of land use and spatial landscape pattern in the past 17 years by using geographic information system (GIS). The Markov model was applied to predict land use variation in the following 10 years. The results showed that: The land use structure in the coastal areas of Yancheng has undergone great changes from 1991 to 2008. It is demonstrated that the percentage of farmland area ascended from 36.42%. to 50.17%., and the artificial wetland area ascended from 9.96% to 20.22%,while the percentage of natural wetland area declined from 46.41% to 23.01%. Construction land increased five times (85.29km²) . Nature wetland, farmland and artificial wetland were the main land use types of research area with obvious reciprocal transformation. Nature wetland was mainly transferred to farmland and artificial wetland, and farmland was mainly transferred to artificial wetland and construction land in 1991-2008. The three types of time-space distribution extended to the coastal zone gradually. And the land exploitation activities became increasingly intensive. A series of landscape patterns changed because of severe human disturbance, such as obvious fragmentation, the dominance decrease, and the diversity and evenness increase, the degree of space across of the nature wetland and the artificial wetland increase. As a result of landscape fragmentation,ecological function in a landscape was declined. The simulated result by CA-Markov model indicated that cultivated land and artificial land continued to rise, the annual average increase rate of construction land was twice the earlier period and the reducing speed of natural wetland was 56.67% of the earlier stage. Between 1997 and 2018, the three types of land use (cultivated land, natural land and artificial wetland) have all extended to the coastal zone.

Abstract: The supply of construction land index is difficult in coal villages migration, especially the construction land index in urban and rural, lacking of construction land index becomes the bottleneck of village migration. In order to ruduce the pressure of the contradiction between supply and demand of land used for construction purposes. This paper combines with the actual situation of coal villages, taking Huainan as an example, starting from the connotation and significance of the policy of linking the increase in land used for urban construction with the decrease in land used for rural construction, based on the analysis of the current situation of the city construction land use, making predictions on the potentiality of village land readjustment in coal mining areas, the potentiality of the rural residential areas hook readjustment and the potentiality of linking the increase in land used for urban construction with the decrease in land used for rural construction, the results show that the overall hook potentiality is larger.

Abstract: Lower reaches of Liaohe River Plain is one of the areas where has a long history of planting in China, thus the enhancement of the capacity of soil carbon sequestration in cropland of this area has an important influence on global green house gases mitigation.Based on the 2nd National Soil Inventory data and the latest results from cropland productivity evaluation,the statistical model of soil carbon sequestration potential established by Qin et al. ^[, the soil organic carbon (SOC) sequestration potential was estimated and the differences of carbon sequestration ability between dry land and paddy field were compared according to the SOC spatio-temporal changes in cropland of Lower reaches of Liaohe River Plain over the last 30 years.The results show that the organic carbon density (SOCP) is 4.95 kg m^-2 when the cropland soil organic carbon is saturated. The organic carbon storage in soil surface is 127.33 Tg in this area with an increase of 57.52 Tg. The organic carbon sequestration ability in paddy field is bigger than dry land in Lower reaches of Liaohe River Plain.

Abstract: This paper expounds the necessity of realizing optimal allocation of land resources in the process of urban construction, taking Hubei province as an example to analyze the current land-use problems, put forward to develop the planning function, adjusting the structure of land use, land control, strengthen the dynamic monitoring and management countermeasure of construction, discusses how to promote ecological environment through the construction of pollution emission reduction, resource conservation, strengthen the greening and so on means.

Abstract: Land-use planning is one of the most important planning in the process of national economy development. Traditional land-use planning rarely considers the impact of the geological environment. This paper takes a case study of Qingyang City and evaluates the geological environment on the basis of mining geo-environment background and field survey on geo-environment problems to form different regions which can guide the compilation of land-use planning. And then, this paper establishes the planning advice assemblage for different region.

Abstract: Adding elevators to old buildings bring not only technical issues as well as economic and social problems, especially the conflicts among different stakeholders. This paper, selecting some representative districts and buildings in Guangzhou, focuses on the public opinions on this issue. Methodologies combining quantitative and qualitative analysis including in-depth interview and questionnaire inquires are approached with the residents concerned, SPSS software, and the results are used for cross section analysis and comparative analysis against the in-depth interview results. At last, a relative accurate reflection of the opinions and views of the residents regarding add elevators to old buildings are presented, and some relevant policy advices are put forward accordingly.

Abstract: Coordinated development of regional economy and ecological environment is one of the core issues of sustainable development practices. In this paper, the numerical parametric statistical method and geospatial analysis tools were used to analyze the spatial-temporal characteristics of coupling relationship between regional economy and ecological environment, the results show that:(1) The EKC of the regional economy and ecological environment is N-shaped, there exists co-integration relationship, but no granger causality between them. (2) The analysis of temporal characteristics shows that the index of economic curve increased relatively stable, since new century, it increases rapidly. The changes of the ecological environments index are relatively stable after it reaches a relative high level in 2005. (3) The spatial differences between regional economy and ecological environment show that all cities of Wanjiang City Belt have significant spatial variation characteristics. To be specific, the condition of regional economy and ecological environment in Hefei, Maanshan and Wuhu, etc. is better than Chizhou, Anqing and Xuancheng etc.