摘要
景观破碎化是制约生物多样性重要的"瓶颈"之一。人为干扰、生境岛屿化等是形成景观破碎化的主要原因,景观破碎化改变了物种生存所需的生物地理环境,物种生存空间锐减,减少了生物的物种多样性;改变了生态系统特性,影响系统内的物质流动和能量平衡,加剧了生态系统的破坏;改变了斑块面积,斑块密度和空间结构,引起景观格局变化,使景观多样性减少。笔者通过对上述方面的阐述,旨在更好地理解景观破碎化对生物多样性产生的深刻影响,并提出减少破碎化的实施措施。
Landscape fragmentation and biodiversity importance was one of the ＂bottlenecks＂ that restricted the diversity of biology.Human disturbance and habitat islands were the main reasons for the formation of landscape fragmentation.Landscape fragmentation changed the geographical environment for the survival of biological species.Survival spaces of species dropped,reducing biological diversity and the characteristics of the ecosystem changed,influencing the flow of material within the system and energy balance and intensifying the destruction of the ecosystem;the patch area,patch density and spatial structure changed,resulting in changes of landscape pattern and reducing the variety of landscapes.The above analysis aimed to better understand the biological diversity of landscape fragmentation on the profound impact.In addition,the implementation of measures to reduce fragmentation was analyzed.
出处
《安徽农业科学》
CAS
北大核心
2011年第15期9245-9247,9294,共4页
Journal of Anhui Agricultural Sciences
基金
四川农业大学双支计划博士专项基金(00370401)
关键词
景观破碎化
物种多样性
人为干扰
生态系统
Landscape fragmentation
Species diversity
Human disturbance
Ecosystem
