Landscape fragmentation, a widespread phenomenon, was considered as a process in which the landscape not only break and disjoint each other but also change from simple to complex under the disturbance of anthropogenetic or other factors. 景观破碎化是目前存在的一种普遍现象,是由于人为因素或其它非人为因素的干扰所导致的景观破碎分离并由简单趋向复杂的过程。