Papers by Author: Sheng Gao Cheng

Abstract: The ideas and research methods about the relative carrying capacity of resources were used by the author in this paper. The relative carrying capacity of natural, economic resources and synthetic resources capacity of Xiangxi have been calculated, the evolution have been described and from 2001 to 2012, compared with the whole country and Hunan respectively. The research results indicated that Xiangxi relative economic resources capacity and relatively comprehensive resource capacity is always in overload condition from 2001 to 2004, Carrying capacity of natural resources as a reference area in Hunan, from 2005 to 2012 the carrying capacity of natural resources in a surplus state, and the amount of surplus rising. Land resources relative to the contribution of integrated resource carrying capacity is far greater than the contribution of economic resources.

Abstract: In order to optimize the best condition of extracting diosgenin in natural fermentation section of natural fermentation acid hydrolysis to explore the influence of fermentation temperature, fermentation time and adding yeast when extracting diosgenin. First set up comparing four fermentation time (t) and five fermentation temperature (T), using reversed-phase high performance liquid chromatography (RP-HPLC) to measure the content of diosgenin, it draws the conclusion that the optimum fermentation time is 48h and the best fermentation temperature is 30°C by natural fermentation; Second compare the yield of adding yeast with the best condition, the results shows that the extraction efficiency with yeast is higher than that of natural fermentation, but the value added is not very large, and it has already achieved good results under the optimal conditions of natural fermentation, so in order to save money, it is not recommended to add yeast.

Abstract: At present China has entered into the rapid development of urbanization, facing the transition from extensive city to conservation-minded city. We need to actively explore the road of urbanization with Chinese characteristics, so as to save resources, improve the quality of urban environment, and create a more suitable living environment. In view of this, this thesis analyze the habitability of Enshi City mainly from the perspective of natural environment, cultural environment, living conditions, public facilities, resources, and put forward their own understanding of livable city and some suggestions of Enshi habitable environmental improvement.

Abstract: Tailings pond is an important part of mine security operation, meanwhile its also a potential and serious hazard source. Determining the environmental impact region of tailings pond scientifically and veritably is of great significance to improve tailings ponds environmental monitoring and emergency management capability Using Chengui Town in Daye, Hubei as study area and WorldView-2 RS image as source data, the paper built the tailings ponds interpretation marks and extracted 76 tailings ponds information. With the watershed analysis method, the paper further used Daye DEM data to simulate water contour information, extract hierarchical river network and catchment watershed, then marked off the tailings ponds environmental impact area, which covered acreage was 59.96 square kilometers and accounted for about 37 percent of Chengui Towns land area. The paper concluded that the tailings ponds brought immense threat to the watersheds eco-environment and the residents safety. The study will provide a reference for relevant departments to strengthen environmental regulation and risk assessment of tailings ponds.

Abstract: This thesis summarizes the main problems of the developing countryside in southern China. The rural infrastructure backwardness causes its overall look backward, losing its local cultural characteristics. It uses landscape planning to realize the optimization of basic rural construction and the beauty of the environment. It focuses on developing the core landscape -- village cultural square and village ecological corridor, using square and corridor segmentation and reasonable layout of village land to optimize the rural landscape.

Abstract: Considering phosphate mine as an object, the text using Analytical Hierarchy Process established a model of cascade evaluation index system. And through the successful experiences of the cleaning production of advanced enterprises of phosphate mine at home and broad, this text determined the recommended value of evaluation index; And in this paper, using fuzzy mathematics method and the success experiences of experts, we put forward a quantitative evaluation method and established a cleaning production evaluation system of phosphate mine.