GIS-based Analysis On Vegetation-Environmental Factors Correlation

Mount Qomolangma National Nature Reserve is located in China's Tibet Autonomous Region at the junction of the Kingdom of Nepal, is the world's highest nature reserve to protect the alpine plateau unique natural eco-oriented, the main target for the protection of high Himalayan mountain landscape Mount Qomolangma Nature Reserve is an ecosystem whose system is relatively weak, the protection of vegetation on the protection of the ecological environment of the system plays a very important role, using GIS technology on Mount Qomolangma Nature Reserve vegetation characteristics and spatial pattern of the relationship with the relevant factors, to guide the production, conservation and human survival And development is of great significance, but also the field of GIS technology applications widening, the DEM application of GIS and the deep-level mining.Based on this study the relationship between vegetation and the environment on this hot, in a wide range of summary results of previous studies and research on the basis of experience, the use of remote sensing technology and geographic information systems technology, the vegetation of Mount Qomolangma Nature Reserve, a multivariate analysis to explore different vegetation Type and temperature, rainfall, elevation, slope and aspect of the five environmental factors; vegetation contribute to an overall understanding of the structure and functional characteristics, the master of Mount Qomolangma Nature Reserve in the general distribution of vegetation characteristics, to reveal vegetation and the environment And the impact on mutual relations.The main topics on the use of GIS technology vegetation of Mount Qomolangma National Nature Reserve of the relationship between environmental factors and to conduct research and statistical analysis, so as to achieve the scientific management of nature reserves, conservation and sustainable use purposes. To Mount Qomolangma Nature Reserve vegetation data, DEM, the average annual temperature data, annual precipitation data as the main research data, reflecting the spatial distribution of vegetation patterns, vegetation cover, vegetation in various environmental factors in the distribution of vegetation types and the most Excellent range of environmental, quantitative description of elevation, precipitation, temperature, slope and aspect of the distribution of various vegetation types, different vegetation types to find the optimal development interval, for various vegetation types to make rational use and protection measures.Research shows that (1) to an altitude of vegetation coverage classified as altitude increases, the vegetation coverage increased after the first decrease in temperature, precipitation classification of vegetation coverage as temperature, rainfall increases, vegetation coverage to increase After a slight decline. (2) above sea level that affect the distribution of vegetation in protected areas most important environmental factors. With the increase in altitude, the water in the hot environment of change, hot-water formation of the composite gradient, hot water and vegetation distribution factor is the impact of the main factors that affect water through the elevation of factors affecting the distribution of vegetation, the elevation gradient Is to determine the distribution of vegetation of Mount Qomolangma Nature Reserve, the leading ecological gradient. The entire study area complex landform, due to the impact of topography, vegetation was sporadic with the vertical distribution of other vegetation plate smashed. Gradient changes easing, the gradient of differentiation were not evident. As differences between the parties do not light up, the distribution of vegetation aspect of differentiation as altitude, rainfall, temperature effects. Slope, aspect of the distribution of vegetation is of secondary importance, the main factor is light, heat, water and other conditions play a role. Finally, the main factor in elevation, in combination with other environmental factors, that the altitude range should focus on the protection and utilization of the vegetation types, combined with practical measures to give protection and utilization.(3) statistical analysis of quantitative results not only to describe all kinds of vegetation distribution of the gradient, and given the ultimate precision of the results - the most appropriate vegetation for each of the elevation, precipitation, temperature, slope interval, to achieve from this Qualitative to quantitative analysis provided a basis and clearly reflects the vegetation of Mount Qomolangma Nature Reserve and the distribution of environmental factors, combined with the actual proposed vegetation protection and utilization measures.