A Quantitative Survey of Effect of Semi-Natural Habitat Composition and Configuration on Landscape Heterogeneity in Arable Land System

Arable land systems are complex ecosystems composed of cultivated and semi-natural habitats. Retaining an appropriate proportion habitats in arable is beneficial for enhancing landscape heterogeneity biodiversity. However, it unclear how many need to be retained improve heterogeneity. In this study, the use data four counties were used as source Lower Liaohe Plain, Liaoning Province, Rao’s quadratic entropy index (Q) was quantitatively characterize We aimed explore minimum habitat required maintain high determine independent interactive effects composition configuration on found that (1) maintaining a 5% threshold achieving systems. 10% share both agricultural production ecology. (2) The combination woodland, water ditches good improving Connectivity critical (3) interaction had strong effect (53.1%). Semi-natural more important than role supporting sustainability therefore needs considered