Analysis Of Landscape Spatial Pattern Of Hefei And Their Applications

Landscape pattern of Hefei is analyzed using quantitative analysis of landscape ecology. According to the principles of landscape classification and characteristics of region, landscape of Hefei is divided into five types, including construction landscape, water landscape, road landscape, vegetation landscape, and agricultural landscape. Major source of information is 2004 Hefei district map in land use. The spatial data and attribute date of Hefei's different landscapes are picked up using image and data processing functions of ArcView 3.2. Selecting different landscape indices, heterogeneity index of spatial pattern is calculating by landscape index calculation software Fragstats3.3.Overall landscape feature of Hefei is analyzed by patch area, the average area of patch, number of patches and patch perimeter. The total number of landscape is 1906. The structure landscape has the largest number, 1083, 56.8% of the total and the largest area, accounting for 46.6% of the total area. Features of landscape types are analyzed through fractal dimension, patch shape index, patch density, inner edge index. The green landscape has the biggest shape index 1.763, but architectural landscape has the minimum 1.254. The largest fractal dimension is water landscape 1.354. The smallest is architectural landscape 1.196. The green landscape has the largest patch density 7.434. The agricultural landscape has the smallest patch density 3.050. The largest inner edge is water landscape 18.832 and the smallest is road landscape 2.364. Landscape heterogeneity of Hefei city and structure of vegetation landscape are analyzed through landscape indices including diversity, dominance, fragmentation, and evenness index. Landscape types of diversity index were architectural landscape 5.514, green landscape 5.164, agricultural landscape 3.597, road landscape 3.486 and water landscape 2.103. Landscape types of dominance were as follows: structure landscape 2.503, road landscape 1.452, water landscape 1.159, green landscape 1.118 and agriculture landscape 0.695. Landscape types of uniformity of size: road landscape 0.861, structure landscape 0.731, green landscape 0.724, water landscape 0.611, agricultural landscape 0.539. Landscape types of landscape fragmentation size are: agricultural landscape 16.034, road landscape 11.025, water landscape 4.013, structure landscape 3.468 and green landscape 1.991. The spread of all types of landscapes, respectively, structure landscape 3.482, agricultural 4.597, water landscape 5.122, road landscape 5.275, green landscape 5.743. By using connectedness index and the network, corridor network of is analyzed. The connectivity index was 0.473491 and central index was 0.209614. The construction landscape is in the main body of Hefei landscape. Its diversity index is the largest and its patch fractal dimension is relatively large. The evenness index of green landscape is the largest. The green landscape has strong influence on the entire landscape. The construction landscape has the largest dominance and the most dominant role on the landscape. The agricultural landscape is distributed around the urban landscape.Through the index analysis of landscape spatial pattern and the discussion of landscape spatial pattern characteristics, to analysis the existing problems of the landscape spatial pattern of Hefei. According to the landscape ecological spatial pattern optimization principle that the policies and measures of urban landscape ecological optimization was proposed. Hefei should construct around Caohu to optimize the urban functions. It will gradually form from the center alone to the high concentration multi-center. It will form from single ring age to the modern era lakeside evolution of the urban cities pattern. Overall structure of Hefei should reflect the landscape background, a green belt through cities, board scattered, finger development of star structural characteristics. Hefei should protect the natural landscape, emphasizing the natural landscape, appropriate to reduce urban density. Hefei should reasonable proposal uniform patches and configuration green corridor. The basis of urban landscape ecological construction and land use were provided for the optimization of Hefei city.