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The Analysis Researeh Concerned On The Han River Basin Arthropogenic Interferen

Posted on:2009-11-08Degree:MasterType:Thesis
Country:ChinaCandidate:Z H CengFull Text:PDF
GTID:2120360245957648Subject:Physical geography
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Anthropogenic interference, which is attributed to production, lifestyle and other social activities imposing variously on the natural environment and ecological system with a way, is another major interference to the distinction of natural disturbance. In some views, Human being's disturbance has far exceeded the natural disturbance to the ecosystem. In the watershed areas, as the impact of human activities, the trend of land utilization changes, and the direction of the succession of landscape pattern, is closely associated with the frequency of human disturbance. Using a large amount of data to seek evidence, we explore the relations between frequency of anthropogenic interference and the land utilization & land coverage in watershed areas, and changes in the landscape. Through the intensity of land changing and the rate of land utilization, we quantify of the change in speed and the composite index of landscape pattern, in order to explain that human interference has a different frequency interference effects on different features of the landscape. We can satisfy the human needs through an appropriate degree of human intervention, meanwhile to minimize the damage to the ecosystem. The factors leading to the effect are below: the restrictions of natural and geographical conditions, the level of economic development, social and cultural progress.The model used in the article, the author's theory and view of the study are in the below.(1)We use the theoretical models of land utilization & land coverage changes in the relevant to analysis of the study area .Then we can find out the changes in land utilization and generated intensity index. Finally show the distribution of land utilization changes in graph.(2)We use the analysis method of landscape and combine the early data of the study area, to evaluate the landscape patterns and changes in status of the study area of the counties and the city. Then we use composite index of landscape pattern to generate graph of the study area.(3) We explore the result of human interference through the changes of basin landscape pattern. Then we analyze its trends. Latter we generate the graph of the frequency of anthropogenic interference with space distribution. The conclusions: Viewing the dimension of time, the intensity index of land utilization and the composite index of landscape pattern, bring a correlation with human interference between the frequency and significant. Even there is a growing complexity of diversity. While of space, the type of landscape play an important role: in the plain areas, land utilization is intensity because of favorable conditions of terrain for planning. However, in different economic conditions, there are differences in the various parts of the region. Compared with the plain areas, the frequency of interference in mountain areas are not low. There the land utilization are less intensity and the pattern of landscape changed little. Mountain and hilly areas, changes of landscape pattern mainly focus on land utilization which is imposed on by the frequency of anthropogenic interference. The intensity and frequency of such change is exacerbating the pace because of human activity.The results showed that landscape is the main factor: the intensity index of land utilization from the mountains, plains to hilly areas show an increasing trend. The composite index of landscape pattern is basically showed the highest in hilly region, lowest in plain areas, the middle in mountainous regions. The frequency of anthropogenic interference also shows the increasing trend is from the plain areas to hilly areas, then to the mountain area. Although the topography is a dominant factor, the economic factors of the modules cause the internal differences. It also determines the direction of the development.
Keywords/Search Tags:anthropogenic interferen, the Han River basin, land use and land cover, landscape pattern, correlation analysis
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