Study On Mountain Greenway Composition Characteristics In Central Districts Of Chongqing And Guiyang

Green Way is an important concept in the urban and rural landscape ecological planning, and one of the hotspots of landscape ecology.From the origin point of view of the Green Way, the main city boulevards and ecological corridor, ecological role and composite functions, plays an important role in urban construction.Southwest China mountain city mountain within the city limits large area, affecting the control of the shape and expansion of the city.The zonal distribution of mountains, the formation of the city’s ecological barrier, with the correlation properties of the Green Way, known as the Mountains greenways.The city of chongqing ZhongLiang mountains,TongLuo mountains, guiyang BaiHua mountains, QianLing and NanYue mountains which contain five mountains ribbon mountains as the research object selected.Through the interpretation of satellite images and field survey, the survey analyzes the status quo of the five mountains greenways landscape to explore the spatial distribution and morphological characteristics of the Mountains greenway land type composition of the compound of the features and functions, Green Way woodland composition, landscape vision the contents of the edge of the greenway under the influence of human activities, environmental gradient. In order to deepen the understanding of the characteristics of mountain city range greenways,provide a theoretical basis for their conservation and management.The results show that:(1)Mountains green way in the city of occupies a large area, ZhongLiang mountains and TongLuo mountains in chongqing city18.7%within covers an area, BaiHua mountains, QianLing veins and le in guiyang city covers an area of mountains rate of34.88%.Woodland within the city limits are also mountains green lane concentrated, Chongqing two greenways woodland accounted for39%of the entire city, Guiyang three greenways woodland accounted for66.4percent of urban woodlands. Strip mountains of the parallel layout of the city naturally separated into different administrative areas, the formation of two mountain folder a city of Chongqing city, the spatial pattern of Guiyang City Mountain City.(2) The width of five mountains in between2500m-4300m, with the protection of biodiversity ecological corridor function.Aspect Ratio:ZhongLiang Mountains (16.86)> the TongLuo mountains (14.47)> the QianLing Mountains (11.54)> The BaiHua Mountains (6.82)> NanYue Mountains (6.56), with a typical linear characteristics. The boundary density:NanYue Mountains (15.53)>the QianLing Mountains (12.58)> BaiHua Mountains (9.91)> the TongLuo Mountains (8.27)> the ZhongLiang Mountains (6.62), the greenway plaque boundary segmentation. The shape index for the gong Mountains (2.98) the QianLing Mountains (2.74)> the ZhongLiang Mountains (2.68)> the NanYue Mountains (2.36)> the BaiHua Mountains (1.71), the twists and turns of the mountain range greenways form a similar level.(3) Mountains greenway land type woodland, farmland, building land, land transportation and other land (rivers, lakes, etc.) the five categories, the first four kind of type focus on the object.The study shows that the regional mountains greenway scale type of greenway land on the mountain ranges type layout to show consistent patterns of change.①Chongqing city:forest land (65.14%)> farmland (11.86%)> building land (10.61%)> traffic sites (7.73%)> other land (4.66%);(2) Guiyang:woodland (59.81%)> farmland (15.81%)> building land (11.62%)> traffic sites (8.60%)> other sites (4.16%).With a single greenway as the research object, woodland is the most important types of land. The lowest of mountain woodland is BaiHua mountains39.45%, other four greenways’ woodland scale to all in the above60%.Proportion of the mountains of BaiHia and other greenways compared to building land (20.61%) and transportation land (12.28%) also higher. Mountains greenway land type compared, with the exception of mountain building land in the beam (12.01%), higher than the farmland, greenways of the other four mountains way are farmland second only to the woodland area.Mountains greenways has two important features of ecological and recreation, and also has the aesthetic, social, cultural, economic and other functions. The complex features of land use types associated.(4) Woodland is an important part of mountains greenway play a key role to play an ecological role of the greenways. Woodland vegetation types and the types of interference, respectively, from the regional greenways and single Mountains Green Way in both directions, summarized the characteristics of the layout features and landscape pattern.Chongqing city and the mountains of guiyang city type green forest vegetation types change way basically the same.①Chongqing city:coniferous forest (60.63%)> conifer forest (28.05%)> evergreen and deciduous mixed forest (5.87%)> shrubs (2.27%)>deciduous broad-leaved forest (1.47%)> bamboo (1.01%)>evergreen broad-leaved forest (0.7%);(2) Guiyang:coniferous forest (48.14%)> conifer forest (24.07%)>evergreen and deciduous forest (10.15%)> shrubs (7.54%)>deciduous broad-leaved forest (6.13%),>evergreen broad-leaved forest (3.97%).Five mountains greenway are coniferous forest (Pinus massoniana mainly warm coniferous forest) for the main vegetation types. The mountains in the beam and the gong mountain vegetation types to maintain consistent patterns of distribution.The three mountain ranges guiyang type green ways except coniferous forest, other type distribution is different.Mountains flowers of the shrub, deciduous broad-leaved forest and evergreen broad-leaved forest, three kinds of vegetation type of area is higher than the other four mountains greenway.Whether urban or single greenway as space units, the interference of mountains greenway’s woodland types, has the same law:Natural forests>Semi-natural forest>Plantations. And the natural forests’distribution ratio between69%-88%. Natural forests distribution concentrated, and the landscape is also the highest integrity.(5) The close relationship of the Mountains Green Road and cities to make the greenway landscape visual two-way nature of the Green Road overlooking the city, look up the mountain in the city. Greenways as linear landscape with a certain degree of continuity.(6) Mountains greenway and city type two kinds of landscape diversity of forming special landscape and ecosystem effect of green ecological takes the edge of the road. Mountains greenway and its marginal environmental gradients, showed a different three-dimensional landscape characteristics under the influence of human activities,also affect the landscape vision of the greenway.