The Evaluation Of Glacier Landscape In Sichuan Province Based On GIS

In the history of Earth-forming evolvement in 40 billion years, interior and exterior geological actions have produced a lot of geological relics with scientific and aesthetic values.As a kind of geological resources, geological vestige can be explored by people and develop social, economic and environmental profits. To well preserve geology vestige is the objective requirement of social civilization and progress. The evaluation on geological vestige is the premise and base of preservation and exploitation.This thesis starts from the glacier landscape, probes into the quantitative analysis on geological vestige and build an evaluation system for the glacier landscape of geological vestige. Under the frame of the evaluation system, choosing certain areas as research target, this thesis gives the ranks of evaluation results, provides strategic decision and support for building glacier garden. The construction of index system strengthens the natural quality of glacier landscape, preserve management and exploiting conditions and uses space data. The chosen index has representativeness, comprehensiveness and operativeness. This thesis chose three item layers, 19 first-class evaluation factors and 22 second evaluation index.In the selecting of evaluation methods, this thesis adopts the Analytical Hierarchy Process and Fuzzy Comprehensive Evaluation and fulfills the quatitative analysis on the basis of determining the nature. First figures out the weight of each target using the Analytical Hierarchy Process, through the expert's rating determined that various targets the membership function, then uses the fuzzy comprehensive judgment to carry on the quantitative evaluation to the geological vestige resources, determines the glacier landscape rank in principle according to the biggest degree of membership; Next using the method of weighting direct calculation various glaciers landscape's synthesis score, gives the measure results according to a minute value. The thesis adopts the way of contrast for the evaluation results and the final ranking and chose the results which are most close to the objective reality. Thus it makes the evaluation results because more of science nature but have generalization. This article divids the eight glacier landscape of Sichuan province into three ranks.By combining the practical research field, using GIS method and making the space display of space distribution, classified ranking of glacier landscape, it makes the whole evaluation more direct and clear.