Study On Landscape Security Pattern Of The Greater Qingcheng Ecotourism District In Sichuan Province

In order to study landscape pattern in the Greater Qingcheng ecotourism District of Dujiangyan City in Sichuan province, the theory and methods of landscape ecology and 3S technology was used. The configuration of patches of landscape element, landscape heterogeneity and diversity, spatial patterns and dynamic change were described to analyze the effects of tourism exploration on landscape structure, on the basis of above study, the landscape security pattern (LSP) theory and minimum cumulative resistance (MCR) model were applied to analyze the distribution and level of classification on LSP and establish perfect projects of landscape security pattern. The main results showed as follows:1. Forest land, farm land and contraction land were three main components, forest land was the matrix landscape. The three main components covered 93.59 % of the total area and 86.24 % of the total perimeter, respectively, which proved that the area, perimeter and patches number of different landscape elements distributed unevenly. The trend of perimeter and area distribution was similar, while the correlation among the number of patches, area and perimeter were not significant.2. The patch characteristics showed that human activity was one of the main factors for landscape fragmentation and separation, and the result of theirs showed that forest land with the least fragmentation, separation and good connectedness, traffic land with the highest fragmentation and separation, and bad connectedness, moreover, contraction land and garden also hold higher fragmentation.3. The rapid development of tourism and realty were the main reason for landscape pattern change. The analysis of spatial pattern dynamic of landscape types from 1990 to 2003 showed that the landscape pattern basically kept steady, and forest land was also the matrix landscape, other landscape type included in research district. The fragmentation degree fluctuated from increase to decrease. Heterogeneity grade was dropped and landscape integrity shape became complicated. The changes of eight landscape types were mostly centralized in the spots and neighborhood where with better tour activity and perfect service reception and facilities, which focused on contraction land of tourism...