The Landscape Dynamic Analyzing Of The Sun Yat-sen's Mausoleum Scenic Area Based On RS And GIS

This research mainly uses the SPOT-5 image data in 2003 and Quickbird image data in 2006 as the Information source.Combined with other study information,the remote sensing and the geographic information system are adopted as the main technical method.Use geometric correction,ortho-rectification,image fusion,texture extraction,image classification,visual interpretation to Extract vector diagram.Then,use the software to analysis the landscape composition,the landscape shape,the landscape diversity,the landscape fragmentation.This research statistic sixteen landscape index.This research use markov ' s prediction models to analysis and predict two years data and the corresponding countermeasure is put forward.The main contents and results of this research are summarized as follows:1)Landscape pattern analysis:This analysis shows the area of broadleaf forest,nursery land, bamboo forest and other land are increasing,the area of coniferous forest,needle broad-leaved mixed forest,farmland and shrub are decreasing,the water area doesn't change on the whole. The increasing of forestland demonstrates the good maintaining of ecological environment.2)Shape analysis:Several types of landscape shape become more complex,fractal dimension is low,it is necessary to improve fractal dimensions of landscape units and reduce disturbance from human activities.The elongation indices are increasing which demonstrates the landscape shape is shrinking,in the mean time,edge effect is bating.3)Diversity analysis:Diversity index and evenness index are in the trends of declining, dominance index is going up,the diversity analysis shows the broad-leaved forest as dominant group in the Sun Yat-sen's Mausoleum scenic area is getting more distinct.4)The degree of fragmentation analysis:As a whole,the fragmentation degree of study area is increasing.The fragmentation degree of forest is increasing while the fragmentation degree of needle forest,needle broad-leaved mixed forest,nursery land,farmland,bamboo forest and other land is decreasing.5)Dynamic analysis:●The contribution to the increasing of broad-leaved forest area from needle forest,needle broad-leaved mixed forest,shrub and other land,however,the needle forest mainly transforms to other land,bamboo forest,needle broad-leaved mixed forest and broad-leaved forest.By the reasons of road construction,expansion of beauty spot,the disforestation around HuangMa reservoir,other land increases.●The transforming from needle forest towards needle broad-leaved mixed forest, eventually completes the transformation.The main driving force for the changing of the Sun Yat-sen's Mausoleum scenic area's vegetation is Natural Succession.●The area of broad-leaved forest will be increasing consistently,it is predictable the area will dominate over 50%of the whole forest area,but the trend is getting slower and slower, meanwhile the declining of needle forest tends slowly.