景观破碎化对生物多样性的影响机制探究

Study on How Landscape Fragmentation Affects Biodiversity

景观破碎化是生物多样性下降的主要原因之一。目前的研究大部分着重于现象或者结果的描述,探索和揭示影响机制的工作需要进一步深入。

As one of major factors attributed to the loss of biodiversity, landscape fragmentation has become one of central issues in conservation biology and ecology. Although theories of island biogeography and metapopulation have been developed to mainly explain effects of landscape fragmentation, it is still immature to get generally comprehensive insight on it. Because edge effect, area effect and isolation effect can influence ecological relationships such as prey - predation relationship, parasite - host relationship and competition relationship among species in ecosystem, the effect of habitat fragmentation on population survival varies among species, habitats and regions. But, at present, the study primarily focuses on the description of findings, and the themechanism of the effect of landscape fragmentation on biodiversity needs fathoming.