| Historically,Lijiang is the important trade center of "Yunnan-tibet tea horse road",the region which distributed a number of cultural relics and landscapes,which is a representative region of the cultural heritage areas,the floating population and urban sprawl increased rapidly when the rise of tourism in Lijiang,the cultural heritage and the ecological diversity is facing the unprecedented pressure.Basis on this,structure cultural heritage corridor of "Yunnan tea horse ancient road" has the dual significance about theory and practice to protect regional cultural diversity and ecological diversity and realize sustainable development.This study analysis the landscape pattern evolution in the study are based on the theory of landscape ecology,using RS and GIS techniques,by the method of the landscape pattern index in nearly two decades,and discuss the mechanism of landscape pattern evolution.Taking the Landscape patches in 2016 as the basement.Selecting 57 cultural heritage "source" of research area as the node,using the MCR model to build the minimum cost path,draw the road of heritage corridor.Combined with landscape patches to construct the "heritage-ecology" complex corridor.The research contents and conclusions are as follows:(1)Since the implementation of urban planning of Lijiang city(2010-2030),the landscape pattern has undergone structural changes,and the urban construction land has gradually become an advantageous landscape type.Through landscape pattern index to show the characterization the mechanism of landscape pattern evolution,the results is that: the characterization of landscape fragmentation of the landscape pattern index is the inverted "U" shape which is first rise,then reduce.tends to a single core within the scope of the study area landscape type,the farmland to construction land landscape is one-way conversion trend;The change of landscape pattern in the study area is the result of the combination of natural,economic and humanistic factors,among which the development of tourism in economic factor and the policy in human factor has significant influence.(2)New construction land has obvious regional preference,and many are tourism real estate projects.Taking the "Dayan ancient town" as the center to make a radius of 5 km heritage radiative zone,also in "Shuhe town," "Baisha town" as the center,make 3 km heritage radiative zone,the radiative area formed the radiation interveined zone,new construction land of Old Town District always distribute in radiation interveined zone,and it has a tendency to spread to the north.(3)Explored the relationship of spatial distribution between the heritage "source" and the ancient road,build the cost route of the heritage corridor.Selecting 57 material culture heritage "source",explored the spatial relations between "source" and ancient road by spatial analysis techniques,set the scope of the heritage corridor to 5-8 km,which can cover most of the heritage "source".Take the landscape classification map in 2016 as the basement,use GIS spatial analysis module to obtain comprehensive resistance,finally,get the suitability map of heritage corridor by cost path and classify the suitability to different grades,build the minimum cost path corridor.Corridor involved "one district and three county",the total length is 1134.70 kilometers,the space distribution of heritage corridor is the mesh structure that from core to sprawled around: the Gucheng district as the core area of heritage corridor construction,net radiation can be roughly divided into seven branch.(4)Based on the landscape classification map of lijiang city in 2016,analysed the landscape composition of the heritage corridor,propose the idea of building 6 "Heritage-ecological protection zone" according to the characteristics of the heritage corridor spatial distribution.Forestland is the advantage landscape of corridor,accounting for 73.09% in the whole area of landscape,the second is farmland landscape(15.58%),the third is construction land(7.68%),The fourth is rivers and snowy(total 1.53%).take the forestland as the migration channel of animals and plants and scenery zone;The farmland is used as an agricultural ecological protection zone,build agricultural-ecological protection zone combine with surrounding villages.On the basis of the natural landscape and spatial distribution characteristics of heritage corridor in the study area,build 6 "heritage-ecological protection zone",which are "Jage Dragon snow mountain protection zone"," Three parallel rivers protection zone ","Lugu lake protection zone ","Lashi wetland park protection zone","Laojun mountain protection zone" and "Chenghai pastoral protection zone",through the construction of protection zone to achieve the function of protecting biodiversity and cultural diversity by building "heritage-ecological corridor"Through study the landscape pattern evolution of heritage area,as well as explored its evolution mechanism,proposes the idea of "heritage-ecological compound corridor",provide new perspectives for the theory of protecting the linear cultural heritage,and provide technological theory to protect the regional culture diversity and ecological diversity.Through the study of typical areas,we hope to provide some inspirations for the follow-up study,and provide some reference for the government to formulate policies. |
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