| The spatiotemporal distribution patterns and developing trends of land use and landscape pattern have a significant impact on urban sustainable development and ecological civilization construction.Meanwhile,via different changes of graphic features and phylogenetic structure,Geo-Informatic Tupu can uncover the characters of spatial structure and spatiotemporal dynamic change rules.With the help of mathematical methods and based on the combination of theories of land-use change,landscape ecology and geo-informatic Tupu,land-use spatiotemporal change Tupu,landscape pattern spatiotemporal change Tupu and landscape diversity spatiotemporal change Tupu were obtained.Land use and landscape pattern in Zhengzhou from 2000 to 2015 was deeply studied and their distribution and evolution laws had been concluded.In the analysis of land use structure,except farmland and waters,the remaining five class had increased in different degree.Farmland and construction land had been always the most advantage types and had a totally different trend.In the change of land use type area,construction land accelerated increasing continuously,indicating that Zhengzhou had a fast development.On the transfer of land type,the input and output of farmland,urban green land,and construction land stand out in each period.The direction change of LUCC made it clear that Zhengzhou would have a big development in the north-west in the future and the main expansion spread towards east-west axial gradually in the whole period.Combined with many landscape metrics,Landscape pattern Tupu’s characteristics were researched.Type level analysis on the global scale showed patch fragmentation of Agricultural land and construction land was aggravating,and the advantage of the agricultural land was significantly weakened.In the landscape level analysis on a global scale,patch shape tended to be more complex and irregular as well as landscape type components distributed more uniformly as a whole in the study area.In the landscape type analysis on the gradient scale,all land types within a certain time and space presented significantly gradual variation.Landscape level analysis on the gradient scale showed that connectivity in the transitional zone of old town and the urban fringe was best,and the worst was located in the urban fringe.Meanwhile,in this place,landscape diversity was the best and polymerization was the worst.Based on the analysis of land use and landscape pattern above and with the help of spatial autocorrelation models,special analysis of Landscape diversity pattern Tupu’s characteristics were discussed: the analysis of the spatiotemporal variations of landscape diversity showed that,east area of Zhengzhou developed fast and had a high value in the landscape diversity,and the stability of urban ecosystem in the whole was increasing.In the spatial autocorrelation analysis,the relationship between landscape units was very significant and the east area of Zhengzhou had a high significance.Generally,It indicated that differences of development level between adjacent areas in Zhengzhou city was small and The eastern economic development had a strongly positive impact on the surroundings。... |
