Analysis The Effect Of Changes In Atmospheric CO₂ Concentration Absorbed By Vegetation Using Remote Sensing Data

Vegetation is the main component of terrestrial ecosystems, with "indicator" role in global change research. Vegetation can slow the absorption of atmospheric CO2 concentration increases, so in contributing to global climate change and human activities have become increasingly frequent in the background, absorbed by vegetation changes in atmospheric CO2 concentration has important practical significance. However, in previous studies, mainly for analysis of vegetation and atmospheric CO2 concentration variation carried out using remote sensing data types less.This paper on a global scale choosing six typical area, contains the forests, grasslands and arable land, three main land types.We collected using atmospheric CO2 GOSAT satellite data sets, a variety of MODIS vegetation, rainfall meteorological data sets, a relative data set based on the characteristics of time and space, correlation analysis of time and space, lag effect analysis and the annual rate of change and so on.In those views,we analysed forest, grassland and farmland three major vegetation types of carbon absorption and atmospheric CO2 concentration changes, space pattern, the relationship between the response mechanism, to reveal the vegetation distribution and potential of carbon sequestration in detail.We used the temporal and spatial correlation analysis showed the vegetation of the study area to absorb atmospheric CO2 concentration and spatial and temporal variation.By comparing the different vegetation parameters, we pointed out the best description of regional vegetation vegetation parameters on the absorption of atmospheric CO2 concentration had important reference value on selected vegetation parameters, which would follow the relevant studies. At the same time through seasonal changes in vegetation and the absorption of atmospheric CO2 concentration analysis, we found the vegetation to absorb atmospheric CO2 concentration with a lag time, this lag time is due to regional atmospheric transport caused by the longer lag period, indicating that the region atmospheric transmission is slow, native vegetation to absorb a greater impact on changes in atmospheric CO2 concentration.Finally, based on the rate of change of atmospheric CO2 absorbed by vegetation and changes in the concentration, we analyzed the impact on the most significant period of the vegetation absorption impacting atmospheric CO2 concentration. Acorroding analysing in this paper, we expect to get global land-atmosphere carbon cycle in a better known understanding.