Ming And Qing Dynasties In Yulin Area Of ​​land Development And Eco-efficiency Study

Historical development of land bears close relationship with current society. Nowadays, many local land use patterns are formed in the long historical choice. Discussing the land development and ecological environmental impact caused by it from the historical geography angle has a very important academic and practical significance. There are comparatively more researches about historical period glebe developing activities and ecological change, but most of them concentrated on a large scale and a big angle, and since a focal point of view, the ecological factors to explore the land development out of ecological factors of various activities affect, which led to the ecological environment of change, in turn restricts the development of the relationship between land less. Therefore, based on historical period of the land development activities as the basic point of Ming and Qing dynasties, through the yulin area many Chinese local Chronicles material consulting, interpretation and analysis, attempts to restore yulin region this historical period of land development activities and ecological environment, and strive to explore the change of relationship between the ecological factors in this plays an important roleThe whole thesis can be classified into two questions:one is the land of development activity profiles, influence, characteristics and contributing factors of the Ming and Qing dynasties, the center for yulin district land development activities and ecological environment recovery. Another is the ecological factors in environmental changes and land development relationship can play an important role in the ecological factors, with its center for the change. Full text can be divided into four parts, content roughly as follows:The introduction mainly explains the overall and macro understanding of this topic, and mainly introduces the research topic selection basis, the space time, reviews the definition, related research and research thought, method and significance.The first chapter of mainly introduced the basic situation of the yulin area, and explained the ecological environment characteristics, the basic function of ecological system analysis, this paper discusses with the characteristics of various ecological factors plays in environmental changes in the basic function and follow the general rule. Summarized in the ecological environment change, because the ecological environment integrity, makes all kinds of ecological factor as the environment has certain change; At the same time, and because the ecological factors follows the minimum factor, patience laws, etc, and once this change law of ecological picture than destroyed the ecological factor, the patient's law, can cause ecological factor function changes, which led to the ecological environment changes. This has caused the formation of ecological environmental vulnerability.The second chapter to the fourth chapter mainly discusses the Ming and qing dynasties of yulin area of land development, attempts to this period of the area of land development situation of the ecological environment of the recovery and change the ecological factors in the analysis, understand the role of the relationship between them. And through the various historical interpretation of the approaching to various land development summarized the main ecological factors caused the change of ecological factors, and then break ecological picture with patience, minimum factor plays the whole area, change law of ecological environment. On the basis of this period, respectively, the area of land reclamation activity, grassland resources and military architecture development activity carried on the ecological factor analysis.The fifth chapter basically deals with development activities of the ecological benefit obtained. Mainly from the environmental quality and social and economic benefit, analyzed from two aspects, draw the conclusion is:during the Ming and qing dynasties yulin region large-scale land development activity caused the regional environment quality declines, makes the vulnerability to strengthen ecological environment, made the conditions worsen. Its development activities in the short term also make the area made quite the social and economic benefits, the increase of population, commercial prosperity. But as the deterioration of the environment, all kinds of ecological factor changes, eventually restricted the development of social economy. Although this including many because of natural factors, but just because of human activity intensifies the environmental vulnerability. Therefore, from the hand, human activities are crucial to the region ecological environment deterioration, and the main factors of ecological factors restricting because the region, the social and economic development is big also restricted.