摘要
在遥感和GIS技术的支持下,结合研究区8种农田生态模式和实地调查数据,通过对不同农区5年间景观格局特征(多样性指数、匀度指数、优势度指数和破碎度指数)分析的基础上,找出了以生态模式为尺度的主要影响因子与景观格局变化之间的对应关系。揭示了生态模式尺度下景观格局变化的生态学意义。研究认为:(1)生态模式作为农田景观破碎度的限制性因子影响明显。(2)城郊农区及环岛农区比规模生产农区生态模式对农田景观格局的影响较显著。(3)稻田中的生态模式对景观格局影响不显著。
Under the support of the technique of GS and GIS, this research found the corresponding relationship between the major influence factors with ecological pattern and the variation of landscape patterns on the basis of combination of 8 patterns of agricultural ecology and data based on spot researching, through analysis of characters of view patterns （ Diversity, Dominance, Evenness, Fragmentation） during 5 years in agricultural regions. The ecological significances view patterns variation is exposed. The result shows that ： （ 1 ） It is remarkable of the ecological pattern to be the influence factors of the fragmentation. （2） Suburb is more remarkable than scale production region to be the influence factors of the ecological pattern. （3） It is not remarkable that in rice paddy of the influence factors.
出处
《科学技术与工程》
2007年第14期3383-3386,共4页
Science Technology and Engineering
基金
国家高新技术研究发展计划(2002AA2Z4331)资助
关键词
景观格局
生态模式
生态过程
landscape pattern
ecological patterns
ecological process
