The Research On The Vegetation Coverage Dynamic Change Of Guangdong Province Based On RS And GIS

Vegetation coverage is one of the important indexes to reflect the evaluation of ecological environment and the measure of vegetation,dynamic change and trend of vegetation coverage is an important data analysis and prediction of spatiotemporal change of vegetation in the area,has important practical significance to reflect the change of ecological environment.In this paper based on the theory of remote sensing and vegetation index,the Landsat satellite remote sensing image as information source,Guangdong Province as the research object,the geographic information system(GIS),remote sensing(RS)and the related statistical analysis method etc.,combine the government announced the vegetation coverage data,normalized difference vegetation index(NDVI)estimation of vegetation coverage,the quantitative analysis on factors influencing regularity and Guangdong Province and the area of vegetation coverage dynamic changes,and summarized the trend in a period of time,put forward reasonable proposals of Guangdong Province,city greening afforestation and ecological construction and accordingly.The main conclusions are as follows:1.The government announced the virtue of vegetation coverage is basically the same remote sensing vegetation coverage calculation,no significant difference.2.In Guangdong province has obvious difference in the time series of vegetation coverage.Beginning around the city,the vegetation coverage increased from 1990,1995 or 2000 in most of the vegetation coverage is the highest,tended to be stable after 2000 change.3.The vegetation coverage in Guangdong province regional economic difference is obvious.Vegetation in the Pearl River Delta region coverage in the lowest,and there is a tendency of slow decline.Is higher than the eastern area and vegetation coverage,and in 20 years,no significant fluctuations,the overall vegetation coverage was more than 55%.Western Guangdong area of vegetation coverage changes,the change rule and economic development.4.1990-2010 in Guangdong Province 21 prefecture level city,Shaoguan City,Heyuan City,Yunfu City,Zhuhai City,high vegetation coverage,vegetation coverage,the lowest Foshan.5.For the Guangdong province vegetation distribution status,put forward some suggestions:strengthen the pace of ecological environment construction,expand the carbon sequestration afforestation area and scope.The establishment of the ecological environment protection in coastal areas,and strive to improve the quality of forest in Western and eastern Guangdong area.To establish the reasonable organization and coordination mechanism and the investment mechanism,strengthening relevant legislation and public legal education.To strengthen the construction of the ecological environment of the regional cooperation and technical exchanges.Further improve the compensation mechanism of ecological benefit,reasonable co-ordination of the relationship between ecological construction and economic construction.