Analyzing Of Potential Vegetation Under Different Climate Scenarios In Period Of2070-2099, China

Terrestrial ecosystem is a bracing system for the terrestrial life-system, while vegetationand climate are the elementary conditions for the survival of human beings. Vegetation, lyingbetween soil and atmosphere, is sensitive to the unusual climate and soil. Studies on potentialvegetation could reflect the actual connection between local climate and vegetation, andpromoting our understanding of terrestrial ecosystem and climate system. Studying onpotential vegetation in one place would reflect the local climate pattern, predicting thedevelopment trend of local vegetation and the top-vegetation in locally natural conditions. Inaddition, the sensitive and non-sensitive zone to climate change could be separated bycomparing the potential vegetation in the same region under different patterns of climatechange, the distinguish of sensitive and non-sensitive zones would provide relevantreferences for the regionally ecological restoration and further studying on potentialvegetation.In this paper, the Comprehensive Sequential Classification System (CSCS), withintellectual property rights on the model vegetation and climate were used. Themeteorological data(spatial revolution is30″) from IPCC4publication from2070-2099inChina was selected to simulate the spatial distribution of potential vegetation. By comparingthe distribution maps under scenarios A1B, A2and B1, some initial conclusions are listed asfollows.(1)The Chinese potential vegetation, simulated based on GIS technology, using theCSCS under the scenario A1B, A2and B1, showed significant zonal rules. The simulatedChinese potential vegetation revealed the obvious latitudinal trends from south to north, thelongitudinally zonal rule from east to west for the humility, and the water and heat withvertical distribution rule.(2)From2070to2099, there were40types of Chinese potential vegetation under thescenario A1B in china,41types in scenario A2, and39types in scenario B1. Various werepresented for the proportion, and types of Chinese potential vegetation under differentscenarios of climate change. By comparative analyzing, it can be proved that Chinese climateconditions are not suitable for development of tropical extrarid desert(ⅦA).(3)The sensitivity zone accounted64.10%of China’s total land area, where the potentialvegetation were sensitive to site climate change. The potential vegetation in these places wasmore prone to succession in order to adapt the climate change.(4)The proportion of non-sensitive zone was35.90%. In these regions, the potentialvegetation would hardly succession with the climate change.