Spatiotemporal Dynamics And Public Perception Evaluation Of Bamboo And Tea Landscapes In West Lake Scenic Area

Regional plant landscape is not only an important part of the regional characteristics of urban landscape,but also the witness and participant of urban development and change.It is the concentrated embodiment of urban cultural characteristics and spiritual outlook.Paying attention to the evolution process of regional plant landscape is conducive to giving full play to its advantages,highlighting its characteristics and inheriting its culture,thus promoting the sustainable development of the city.In this study,remote sensing data were used to calculate the spatial pattern of bamboo and tea garden landscape in the West Lake Scenic Area,Hangzhou at some key years.Field work and literature analysis were also applied to describe the historical dynamics of bamboo and tea garden landscape.The changes in spatial distribution,functional composition,ecological changes and cultural services of bamboo and tea garden landscape were analyzed.And the internal causes and basic laws of the changes were discussed.Finally,combined with the questionnaire survey to obtain the emotional cognition of tourists to the two kinds of landscape,the corresponding optimization strategy is put forward.The specific research results are as follows:(1)From 2007 to 2017,the bamboo forest area of West Lake scenic area decreased as a whole,and the spatial fragmentation and complexity also decreased simultaneously,showing the heterogeneity of spatial distribution;Compared with ornamental bamboo forests,productive bamboo forests are decreasing at a faster rate and their proportion in bamboo forests is also decreasing.Bamboo’s biodiversity has also declined over the past decade,negatively affecting local ecosystem services.For the future development of bamboo forest landscape in West Lake scenic area,it is necessary to weigh its landscape advantages and ecological impact,and conduct differentiated planning and management based on spatial and functional characteristics.(2)From 2007 to 2017,The tea garden area and landscape fragmentation degree in West Lake Scenic Area increased,and the patch shape tended to be complex.The species diversity of tea garden ecosystem decreased in the last 10 years,especially the number of plants in shrub layer and tree layer decreased to almost zero.The cultural service function of West Lake Tea Garden has been improving,which is reflected in the increase in the number of related activities,the expansion of influence and the rich and innovative forms of activities.(3)Questionnaire survey was conducted on the public cognition status.The results showed that the respondents’ overall cognition level of bamboo and tea landscape in West Lake scenic area was lower than expected,and the cognition of tea garden landscape in West Lake was slightly better than bamboo forest.The value perception of bamboo and tea is more inclined to landscape style and theme culture,but not sensitive enough to the ecological significance of the two.At the same time,they showed certain enthusiasm and willingness to participate in the cultural activities related to bamboo and tea in West Lake.(4)The land use transfer matrix of West Lake Scenic Area from 2007 to 2017 was analyzed and calculated.The results showed that the bamboo forest land changed greatly during the 10 years,mainly shifting to woodland,tea garden and building land.The change of tea plantation land was relatively small,mainly to woodland and building land.(5)Taking the above research conclusions into full consideration,the optimization strategies of the bamboo and tea garden landscape in The West Lake scenic spot are proposed respectively: The bamboo forest should focus on the improvement of ecological environment,adopt regional differentiated management,optimize the configuration of the bamboo forest landscape,and strengthen the maintenance and management in the later period.Tea garden is mainly to improve cultural services.Through the following five aspects to optimize: the integration of advantageous resources,strengthen ecological science,improve scenic facilities,create brand effect,and improve the planting mode.