Forest Landscape Corridor Effect And Construction Plaque Coupling Body Construction Research

Corridor width of the corridor structure is the main influencing factors. Based on the research of the width of the corridor, to explore the width of the different corridor effect, indirect reflects the plaques edge effect of strength, for forest landscape plaque formation of coupling body provided the foundation.Base on the landscape ecology and forestry system engineering, topographic map1-1,2006forest form map and land use database of Changed as data sources. Use the spatial data processing, mathematical statistics to classification, gradation and statistics the corridor of West of Dongting lake area. Analysis the effect and corridor related of the corridor width on the corridor width effect analysis of shrub and herb layer samples in different grade corridor of roads and rivers with the ecological dominance index, species diversity and species similarity three indexes. Using the analytic hierarchy process (APH) and normalization method change each index corridor width effect into corridor integrated effect value, to select corridor system for building the forest landscape plaques coupling body. Based on ARCGIS'space data processing functions, select the tools and network analysis (corridor width effect value as weights) build forest landscape plaques coupling body. Use of trees on level of edge effect as indicators to validation closed area is the forest landscape plaque formation coupling body. The main research conclusion as follows:(1)The corridor classify in study area. Taoyuan'corridors have three types: highway, rural roads and ditches. Based on the highway engineering technical standard classify the different types of corridor. Highway and rural roads belong to road corridor is divided into level4:level1corridor width to1-4m; Level2corridor width is4-7m;3the width of the corridor of7to10m; Level4corridor is more than10m. Ditch river corridor is divided into8belong to:level1corridor width to1-3m,3m above the river corridor, each meter divided into level. (2) Corridor width effect analysis conclusion is as follows:â‘ Road corridor for shrub and herb analysis conclusion species are as corridor on the level of the decreased; A, level2corridor ecological advantage degree numerical lesser and close, species distribution uniformity, the dominant species not important; Level3corridor ecological dominance index increased dramatically. The species diversity of corridor with corridor level and decreases, with the increase of the width of the corridor, species diversity has decreasing trend.â‘¡River corridor for shrub and herb analysis conclusion species are better than the same width of the road corridor more species. The corridor of the width of the species as corridor species increased, have slightly downward trend. In the first and fifth river corridor of ecological advantage for presenting the bush for two rising curve, ecological advantages as corridor width increases with the increase of the herb ecological advantages curve wavy, average close, not increase or decrease the trend; Shrubs and herb data the species diversity of ecological advantages than smooth curve degree, although overall drop but the size is very small.(3) Corridor width effect analysis methods and results. Analytic hierarchy process (APH) index for the bottom ecological advantage bush degrees (A1), shrubs species diversity (A2), herb ecological dominance index (A3), herb species diversity (A4), species similarity (A5).The weight value of the results:0.517,0.190,0.190,0.030,0.073.After the normalized get corridor width effect results, level1to level3corridor0.3710.1900.567. River corridor width effect value is:level1to level80.190,0.225,0.458,0.584,0.481,0.502,0.549,0.751.(4) Putting forward the concept of forest landscape plaques coupling body and the analysis. Plaques coupling body is composed of two or more have heterogeneity plaques form, based on the ecological flow heterogeneity plaques interface coupling of role in the formation of a complex ecological system, the system between patches have heterogeneity, relative to the more ecological system just, plaques coupling body maintain sustainable forms. If the plaques by heterogeneous coupling body forest landscape plaques form, the forest landscape plaques for coupling body. In this paper the forest to swim as an example, in the research area surrounded by corridor for three a closed area, via examining regional1,2of the internal plaques than border plaques of edge effect is strong and have more apparent gap, formed the forest landscape plaques coupling body. On this basis, based on the research of the accuracy and richness, USES the forest landscape similarity index and the shape of patch fragmentation index selection of the optimum coupling body forest landscape plaques, get the forest landscape plaques coupling body for the best1forest landscape plaques coupling body.