Dissertation > Astronomy,Earth Sciences > Surveying and Mapping > General issues > Mapping database and information system

GIS-based Analysis on Vegetation-Environmental Factors Correlation

Author HuLei
Tutor WangXuBen
School Chengdu University of Technology
Course Signal and Information Processing
Keywords Vegetation distribution Environmental factors Vegetation protection GIS Qomolangma Nature Reserve
CLC P208
Type Master's thesis
Year 2008
Downloads 253
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Everest National Nature Reserve is located in China's Tibet Autonomous Region, southwest corner of the junction of the Kingdom of Nepal, is the world's highest nature reserve, mainly to protect the plateau unique alpine natural ecosystems. Everest Nature Reserve is a relatively fragile ecosystem system to protect the vegetation plays a very important role in the protection of the ecological environment of the system, the use of GIS technology research QNNP vegetation spatial pattern characteristics and related factors, guide the production, nature conservation and human survival and development has great significance, but also the widening of GIS technology applications, GIS and DEM application of deep-level mining. This study is based on the research focus of the relationship between the vegetation and the environment, based on widely summarizes the results of previous studies and research experience, the use of geographic information system technology, multivariate analysis of Everest Nature Reserve vegetation explore different vegetation types and temperature precipitation, elevation, slope and aspect relationship of five environmental factors; contribute to a comprehensive understanding of the structure and function of the vegetation characteristics, to grasp the general characteristics of the Qomolangma Nature Reserve vegetation distribution, help to reveal the relationship of the vegetation and the environment and impact. The main subject of the use of GIS technology to carry out research and statistical analysis of the relationship between Everest National Nature Reserve vegetation distribution and environmental factors, in order to achieve the scientific management of nature reserves, protection and sustainable use of the purpose. Everest Nature Reserve vegetation data, DEM, mean annual temperature data, annual precipitation data for primary research data, the spatial distribution pattern reflects the vegetation, vegetation coverage, and most of the vegetation types of vegetation in the distribution of environmental factors excellent development environment intervals quantitative description of the distribution of various vegetation types, elevation, precipitation, temperature, slope and aspect, to identify the optimal development of vegetation types interval, rational use and protection measures for each vegetation type on Everest Nature Reserve vegetation protection and building a more effective conduct of important guiding significance. The study showed that: (1) in protected areas, as the altitude increases, the vegetation coverage increased to reduce; show similar variation with the increase of temperature, precipitation. (2) above sea level is the main environmental factors that influence the distribution of vegetation types of protected areas. As the altitude increases, the formation of hydrothermal factor the composite gradient, thus affecting the vegetation distribution. The study area is influenced by topography, vegetation type was a mosaic state. Region slope change mitigation, obvious differentiation slope. (3) paper quantitatively describes the various vegetation gradient distribution of state, divided into different vegetation types most suitable for the development of altitude, precipitation, temperature, slope interval, clearly reflects the relationship of the Qomolangma Nature Reserve vegetation and environmental factors vegetation protection and utilization measures.

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