Bogaert J, Salvador-Van Eysenrode D, Impens I, Van Hecke P
University of Antwerp, UIA, Biology Department, Wilrijk, Belgium.
Environ Manage. 2001 Apr;27(4):493-500. doi: 10.1007/s002670010165.
A method is proposed to quantify disturbance impact on isolated habitats. For every landscape patch, the breakpoint distance, defined as the penetration distance for which equality of interior and edge habitat is observed, can be calculated. Disturbance with equal impact at all patch sides is assumed. Effects of patch compactness, size, convolution, and perforation are discussed. The potential use of the measure for nature reserve design is discussed. The breakpoint distance follows the reserve design guidelines for individual patches, based on island biogeography and is consistent with the form and function principle. A large breakpoint distance is preferred for natural habitats. Small size, small compactness, intense convolution, and the occurrence of many gaps depress the breakpoint distance.
提出了一种量化干扰对孤立栖息地影响的方法。对于每个景观斑块，可以计算断点距离，断点距离定义为观察到内部和边缘栖息地相等时的穿透距离。假设在所有斑块边缘的干扰影响相同。讨论了斑块紧凑性、大小、卷积和穿孔的影响。还讨论了该测量方法在自然保护区设计中的潜在用途。断点距离遵循基于岛屿生物地理学的单个斑块的保护区设计指南，并且与形式和功能原则一致。对于自然栖息地，较大的断点距离是优选的。小尺寸、低紧凑性、强烈卷积以及许多间隙的出现会降低断点距离。
