| With the acceleration of urbanization,the "urban green center" affects the development of urban form.Longquanshan Urban Forest Park is the key urban green center" in the process of urban development in Chengdu,which will become an indispensable central link in the development of urban construction in Chengdu.Therefore,taking Longquanshan City Forest Park as the research object,the dynamic change of its landscape pattern and its driving force are studied,and on this basis,the present situation and development problems of Longquanshan City Forest Park are obtained,and the suggestions for subsequent conservation development are of great significance.Taking Longquanshan City Forest Park as the research object,this paper selected remote sensing images of the region in 2008,2013 and 2018,applied GIS technology,quantitatively analyzed the current situation and changing trend of the landscape pattern in the region with landscape pattern index and landscape pattern map,and further explored the main driving factors based on the analysis of its driving force composition.On the basis of the above,the existing problems of landscape pattern in this region are put forward,and relevant suggestions are put forward.The results show that:(1)In the landscape pattern of Longquanshan Urban Forest Park in 2018,the dominant landscape type is farmland,followed by forest land.However,the fragmentation degree of the whole landscape is relatively high,and the landscape structure is relatively complex.At present,a pattern of intensive elements has been formed.(2)According to the comparison of landscape pattern maps and related landscape pattern indices in 2008,2013 and 2018,it is concluded that the overall landscape pattern change of Longquanshan Urban Forest Park suffered from degree of fragmentation,and the dominance of dominant landscape farmland is declining,but it still occupies a relatively dominant position.At the same time,the more abundant land use,the higher the degree of fragmentation in the region.(3)To analyze the dynamic changes of landscape pattern,the related driving forces are divided into two aspects:the driving force of natural factors and the driving force of social factors.In the study of driving factors by principal component analysis,it is concluded that population factor and economic factor are the main factors affecting the dependent variable,while precipitation and temperature factor are the main factors affecting the dependent variable.(4)According to the current situation and dynamic changes of the landscape pattern in the study area,and the related research of driving factors,it is concluded that the landscape pattern problems in this area are as follows:there is an urgent need to adjust and change the position between the dominant landscape resources in the landscape structure;the overall landscape fragmentation degree is higher,among which the fragmentation degree of forest landscape and farmland landscape is still increasing;the forest ecosystem is fragile and can not be completed.Fully play its ecological function.In view of these problems,and Longquanshan City Forest Park development status,related policies to promote the transformation of dominant landscape types,strengthen ecological protection,enhance the stability of forest ecosystem,and emphasize the importance of corridor system. |
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