景观格局分析指数选取刍论

当前景观格局分析中所用到的景观指数上百种，如何根据研究目的和研究对象的特点正确选择景观指数是一个普遍存在，然尚未完善、亟待解决的问题。在简要阐明构建景观格局指数中颇具代表性的理论基点（如岛屿生物地理学理论、景观镶嵌模型）的基础之上，针对普遍存在的混淆和误用景观指数的事实，叙述了合理选用景观指数的基本原则。最后，引介国外Ritters和O’Neill等人所推荐的具有广泛应用价值的5个景观指数：平均斑块边缘一面积比、蔓延度、相对斑块面积、分维数及斑块类型／景观类型／土地覆盖类型，以供读者选取景观指数时应用参考。

OVERVIEW ON CHOOSING LANDSCAPE INDICES IN LANDSCAPE PATTERN ANALYSIS

There are over 100 metrics using in the landscape pattern analysis nowadays, but it is truly difficult on how to choose the right metrics according to the purpose of study and facing objects. Two main different perspectives i. e. island biogeographical model, landscape mosaic model, which have profoundly influenced the development of landscape metrics were introduced. As for the truth of confusion and misuse of landscape metrics, the principles of selecting reasonable landscape metrics were discussed too. Finally, five widely used landscape metrics recommended by RAtters and O＇Neill were introduced to readers to provide reference on how to choose metrics in study. The five metrics include average patch perimeter - area ratio, contagion, relative patch area, fractal dimension and cover types.