| At the landscape scale forest management pursuit dynamic optimization of forest ecological economic system, it is the key to configure reasonably forest patches, and adjust the forest spatial structure,delevop forest composition interaction maximum efficiency, which requires the reveal edge effect of forest landscape patch, seek coupling mechanism, as the landscape forest business management service.This paper have the West Dongting Lake area as the research object, its divisions for the Chinese fir plantation, pine forest, hardwood forest, bamboo forest, shrub forest5kinds of different tree species, and divided into young forest, middle forest and mature forest, analysis edge effects of forest landscape adjacent patches, analysis coupling degree of adjacent patches on the basis of the core area and marginal zone productivity and species diversity, reveale its coupling mechanism, analysis recurrence relations the corridor width and edge effect of corridor on both sides patch, extraction forest landscape patch couplings, analysis forest landscape patch coupling characteristics. The research methods include landscape pattern analysis, spatial data processing method, statistical classification, regression analysis and grey relational analysis. The main research contents and conclusions are as follows:(1)Forest landscape patch division, on the basis of plaque with high homogeneity, adjacent patches with high heterogeneity, propose multi-scale forest landscape patch division basis as follows:â‘ forest landscape classification results;â‘¡environment dominant factor selection, classification results;â‘¢the environment-based coupling degree of forest landscape types. small scale plaque classification correspond to less classification level, large scale correspond to more classification level, for multi-scale forest landscape patch division, with the spatial analysis function of ArcGIS software, put forward from small scale to large scale forestry data integration method based on adjacent relation.(2)Forest landscape patch characteristics analysis. based on the classification of landscape elements, the dominant tree species and age groups for landscape classification,the study area should be divided into:Chinese fir, pine landscape, economic forest landscape, broad-leaved shrub landscape, cypress bamboo landscape. West Dongting Lake Forest landscape has the following characteristics:â‘ from plaque area analysis, broad leaved landscape is the most in study regional, followed by economic forest, pine and fir;â‘¡from the volume, broad-leaved plaque number is the most, pine and fir;â‘¢from the shape, LSI index of economic forest landscape patch has a maximum value, followed by pine and fir type;â‘£from distribution pattern, landscape structure complex, each type of landscape area distribution didn't balance, have trend of fragmentation.(3) The edge effect characteristics of forest landscape patch analysis. using productivity and species diversity analysis the edge effect of forest landscape adjacent patches of core and periphery area, productivity use the sample mean DBH, mean tree height, volume and species density index, species diversity use species richness and species diversity index in the shrub and herb layer, edge effect of West Dongting Lake Forest landscape patch exist regularities as follows:â‘ it have increasing tendency that the average diameter, average tree height and volume of adjacent patches of marginal zone is more than in the core area, and young and middle forest trend more obviously than mature forest, but different species exist difference between adjacent patches of edge effect;â‘¡plants under trees in the shrub and herb exist regularities as follows:fir forest core zone (or pine core area)> broad-leaved forest core area> marginal zone, the shrub layer of species richness> herb layer, the marginal zone of the species richness, species diversity changes in amplitude than the adjacent two core area, from the age group, species richness and species the diversity in shrub and herb layer has:young forest> middle forest> mature;â‘¢species richness and species diversity in shrub and herb layer has:shrub layer> herb Layer, marginal zone> core area, young>middle> mature forest.(4) Forest landscape patch edge effect evaluation. edge effect evaluation of forest landscape patch based AHP, weights for mean diameter, tree height, volume, density, species richness of shrub layer, species richness of herb layer, species diversity of shrub layer, species diversity of herb layer is0.163:0.0427:0.471:0.072:0.153:0.053:0.029:0.0163, calculation intensity of edge effect according to the weight, the results showed that:â‘ different plaque on the forest landscape patches mostly have positive effect;â‘¡intensity of edge effect has a mature> middle forest law, young forest edge effect is not obvious from the age group analysis;â‘¢from the forest landscape analysis, forest landscape patches the intensity of edge effect of Chinese fir and broad width> pine fir pine Chinese fir and pine for the law, both coniferous forest, the degree of similarity, confirm " same-sex repulsion" principle, and the young forest pine fir negative effect.(5)The influence factor of forest landscape patch edge effect analysis. analysis the correlation degree of forest landscape patch edge effect and ecological factors using the grey correlation, the results showed that:the productivity and species diversity and the sample area number (core area or marginal zone) has a stronger connection, volume and mean DBH of fir-wide edge forest degree respectively0.573:0671, fir pine, pine, bamboo and other community-lata, shrubs and other community related degree is in0.6above, fir forest, bamboo forest and the elevation of the correlation degree is bigger, more than0.7, and pine and age associated greatly.(6)The forest landscape patch coupling degree model. forest landscape patch coupling degree model from the physics capacity coupling coefficient model, calculation of the forest landscape patch coupling degree:â‘ young forest of coupling degree has the minimum value, which belongs to the low level of coupling, middle and mature forest had no significant difference, which belongs to the medium level coupling;â‘¡width, fir pine and fir-lata-pine forest, mature forest to reach a higher level coupling;â‘¡the FIR-width of all age groups and fir pine corresponding age group coupling degree value comparison, fir-wide coupling values greater than fir pine, pine and broad-leaved coupling degree value is greater than the pine and fir, fir forest and pine forests are coniferous forest, coniferous and broad-leaved forest dissimilarity degree, coupling degree, coniferous forests and pine forest dissimilarity degree, coupling degree is relatively small.(7)Forest landscape patch coupling of extraction and feature analysis. Put forward forest landscape patch couplings concept, plaque couplings is based on the heterogeneity of plaque interface ecological flow coupling to form a whole, as a complex ecological system. system between plaque with heterogeneity, presents the edge effect, compared to larger ecosystems, plaque couplings to maintain sustainable morphology, with some heterogeneity, if plaque couplings by the heterogeneity of forest landscape, forest landscape patch coupling body for. Summary of forest landscape patch coupling body features:ecosystem complexity, system stability, nonlinear, coupling effect of scale, regional, easy expression.
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