摘要
采用地形位指数描述区域地形差异,并利用无量纲的分布指数对景观组分空间分布特征进行定量分析;通过地形差异揭示景观空间格局分布规律,并对各景观要素定量赋值,通过生态效应模型研究土地利用综合生态效应。结果表明:自然景观主导区域景观格局,人为景观次之,半自然景观则明显处于支配地位;各景观组分在地形位梯度上的分布格局表现出显著分化,低段区域上各景观组分竞争激烈,分布相对集中,高段区域,限制了部分景观的生存发展,景观组分相对单一;生态环境质量好的区域,自然景观为主体;生态环境质量中等的区域,处于自然景观和人为景观的过渡地带;生态环境差的区域,以人为景观为主体。
Terrain niche index was used to describe the regional terrain difference and nondimensional distribution index was used to quantitatively analyze the spatial distribution characteristics based on the spatial information of landscape components. The characteristics of landscape spatial distribution was proclaimed by the terrain difference and the ecological model was used to study the integrated ecological effect and environment ecological quality of land use with the assignment of the value of landscape components. The result showed that the regional landscape pattern of nature landscape plays a leading role and the artificial landscape takes the second place, while the role of half-natural landscape is dominance. In terrain niche, the spatial distribution of different landscape components has obvious difference and the competition of landscape component in lower district is obvious with centralized distribution.While in higher district, the existence of some landscape components is restricted with single distribution. Nature landscape, natural and artificial-made landscape and artificial landscape has priority in the area of good, medium and bad environment respectively.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2009年第5期899-906,共8页
Journal of Jilin University：Earth Science Edition
基金
国家'863'项目(2006AA12Z104)
黑龙江省教育厅项目(11531294)
关键词
景观格局
地形位指数
分布指数
生态环境质量
landscape pattern
terrain niche index
distribution index
ecological environment quality
