tailieunhanh - Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia. | JOURNAL OF FOREST SCIENCE 57 2011 7 312-320 Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia T. Kusta1 Z. Keren2 M. Jezek1 ỵ Department of Forest Protection and Game Management Faculty of Forestry and Wood Sciences Czech University of Life Sciences Prague Prague Czech Republic 2 Department of Landscape Ecology Faculty of Environmental Sciences Czech University of Life Sciences Prague Prague Czech Republic ABSTRACT The article summarizes changes detected in landscape structures and interrelated changes in landscape management surrounding a model section of the D1 motorway 11th-29th km . Biotopes gradual development was determined based on historical aerial photographs from 1949 1974 1988 and 2007. Issues evaluated include especially direct occupation of biotopes and agricultural lands due to constructing industrial areas in the motorway s vicinity changes in area dimensions of agricultural and forest land construction of residential complexes and complementary infrastructure. Also investigated was how these transformations and other negative factors of the linear construction particularly barriers along the motorway and traffic intensity influence migration of large ungulates. The aerial photographs show significant decrease in polygons in the Crop fields category between 1949 and 2007. While in 1988 the area of Commercial zones in this territory was only in 2007 these already constituted of the entire territory. Forested area increased slightly. Traffic intensity and barriers along the motorway were found to create sections through which large mammals have great difficulty passing. Keywords landscape migration wildlife motorway A basic feature of every landscape is its spatial heterogeneity expressed by the landscape structure. Landscape structure has a crucial influence on the functional properties of a landscape. Any changes in the landscape structure in space .